1
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Liu Y, Huang Y, Wu D, Jang H, Wu J, Li H, Li W, Zhu F, Kim MG, Zhou D, Xi X, Lei Z, Zhang Y, Deng Y, Yan W, Gu MD, Jiang J, Jiao S, Cao R. Ultrathin and Conformal Depletion Layer of Core/Shell Heterojunction Enables Efficient and Stable Acidic Water Oxidation. J Am Chem Soc 2024; 146:26897-26908. [PMID: 39312479 DOI: 10.1021/jacs.4c07995] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/25/2024]
Abstract
Ru-based electrocatalysts hold great promise for developing affordable proton exchange membrane (PEM) electrolyzers. However, the harsh acidic oxidative environment of the acidic oxygen evolution reaction (OER) often causes undesirable overoxidation of Ru active sites and subsequent serious activity loss. Here, we present an ultrathin and conformal depletion layer attached to the Schottky heterojunction of core/shell RuCo/RuCoOx that not only maximizes the availability of active sites but also improves its durability and intrinsic activity for acidic OER. Operando synchrotron characterizations combined with theoretical calculations elucidate that the lattice strain and charge transfer induced by Schottky heterojunction substantially regulate the electronic structures of active sites, which modulates the OER pathway and suppresses the overoxidation of Ru species. Significantly, the closed core/shell architecture of the RuCo/RuCoOx ensures the structure integrity of the Schottky heterojunction under acidic OER conditions. As a result, the core/shell RuCo/RuCoOx Schottky heterojunction exhibits an unprecedented durability up to 250 0 h at 10 mA cm-2 with an ultralow overpotential of ∼170 mV at 10 mA cm-2 in 0.5 M H2SO4. The RuCo/RuCoOx catalyst also demonstrates superior durability in a proton exchange membrane (PEM) electrolyzer, showcasing the potential for practical applications.
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Affiliation(s)
- Yang Liu
- Hefei National Laboratory for Physical Science at the Microscale, Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 2300 26, China
| | - Yan Huang
- Key Laboratory of Precision and Intelligent Chemistry, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei 2300 26, China
| | - Duojie Wu
- Eastern Institute for Advanced Study, Eastern Institute of Technology, Ningbo, Zhejiang 315200, China
| | - Haeseong Jang
- Department of Advanced Materials Engineering, Chung-Ang University, Anseong-si, Gyeonggi-do 17546, Republic of Korea
| | - Jianghua Wu
- National Laboratory of Solid State Microstructures, Jiangsu Key Laboratory of Artificial Functional Materials, College of Engineering and Applied Sciences and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China
| | - Huirong Li
- Key Laboratory of Precision and Intelligent Chemistry, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei 2300 26, China
| | - Wanxia Li
- Key Laboratory of Precision and Intelligent Chemistry, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei 2300 26, China
| | - Feng Zhu
- TRACE EM Unit and Department of Materials Science and Engineering, City University of Hong Kong, Kowloon 999077, Hong Kong SAR, China
- City University of Hong Kong Matter Science Research Institute (Futian, Shenzhen), Shenzhen 518048, China
| | - Min Gyu Kim
- Beamline Research Division, Pohang Accelerator Laboratory (PAL), Pohang 790-784, Republic of Korea
| | - Donglai Zhou
- Key Laboratory of Precision and Intelligent Chemistry, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei 2300 26, China
| | - Xiaoke Xi
- Key Laboratory of Precision and Intelligent Chemistry, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei 2300 26, China
| | - Zhanwu Lei
- Key Laboratory of Precision and Intelligent Chemistry, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei 2300 26, China
| | - Yuchen Zhang
- Hefei National Laboratory for Physical Science at the Microscale, Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 2300 26, China
| | - Yu Deng
- National Laboratory of Solid State Microstructures, Jiangsu Key Laboratory of Artificial Functional Materials, College of Engineering and Applied Sciences and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China
| | - Wensheng Yan
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 2300 29, China
| | - M Danny Gu
- Eastern Institute for Advanced Study, Eastern Institute of Technology, Ningbo, Zhejiang 315200, China
| | - Jun Jiang
- Key Laboratory of Precision and Intelligent Chemistry, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei 2300 26, China
| | - Shuhong Jiao
- Key Laboratory of Precision and Intelligent Chemistry, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei 2300 26, China
| | - Ruiguo Cao
- Hefei National Laboratory for Physical Science at the Microscale, Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 2300 26, China
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2
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Zhong X, Liu XH, Peng HJ, Liu X. Theoretical insights into layered IrO 2 for the oxygen evolution reaction. Chem Commun (Camb) 2024. [PMID: 39344642 DOI: 10.1039/d4cc03458a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/01/2024]
Abstract
Here we present the density functional theory-based exploration of layered IrO2 polymorphs for the oxygen evolution reaction, as well as a data-driven geometric descriptor for catalytic activity. The layer edges are identified as promising active site motifs with not only low theoretical overpotential but also intriguing structural flexibility and to break the universal energetic scaling through torsional distortion.
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Affiliation(s)
- Xian Zhong
- Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 611731, China.
| | - Xin-He Liu
- Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 611731, China.
| | - Hong-Jie Peng
- Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 611731, China.
| | - Xinyan Liu
- Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 611731, China.
- Key Laboratory of Quantum Physics and Photonic Quantum Information, Ministry of Education, University of Electronic Science and Technology of China, Chengdu 611731, China
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3
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Han J, Sun J, Chen S, Zhang S, Qi L, Husile A, Guan J. Structure-Activity Relationships in Oxygen Electrocatalysis. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024:e2408139. [PMID: 39344559 DOI: 10.1002/adma.202408139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2024] [Revised: 09/03/2024] [Indexed: 10/01/2024]
Abstract
Oxygen electrocatalysis, as the pivotal circle of many green energy technologies, sets off a worldwide research boom in full swing, while its large kinetic obstacles require remarkable catalysts to break through. Here, based on summarizing reaction mechanisms and in situ characterizations, the structure-activity relationships of oxygen electrocatalysts are emphatically overviewed, including the influence of geometric morphology and chemical structures on the electrocatalytic performances. Subsequently, experimental/theoretical research is combined with device applications to comprehensively summarize the cutting-edge oxygen electrocatalysts according to various material categories. Finally, future challenges are forecasted from the perspective of catalyst development and device applications, favoring researchers to promote the industrialization of oxygen electrocatalysis at an early date.
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Affiliation(s)
- Jingyi Han
- Institute of Physical Chemistry, College of Chemistry, Jilin University, 2519 Jiefang Road, Changchun, 130021, P. R. China
| | - Jingru Sun
- Institute of Physical Chemistry, College of Chemistry, Jilin University, 2519 Jiefang Road, Changchun, 130021, P. R. China
| | - Siyu Chen
- Institute of Physical Chemistry, College of Chemistry, Jilin University, 2519 Jiefang Road, Changchun, 130021, P. R. China
| | - Siying Zhang
- Institute of Physical Chemistry, College of Chemistry, Jilin University, 2519 Jiefang Road, Changchun, 130021, P. R. China
| | - Luoluo Qi
- Institute of Physical Chemistry, College of Chemistry, Jilin University, 2519 Jiefang Road, Changchun, 130021, P. R. China
| | - Anaer Husile
- Institute of Physical Chemistry, College of Chemistry, Jilin University, 2519 Jiefang Road, Changchun, 130021, P. R. China
| | - Jingqi Guan
- Institute of Physical Chemistry, College of Chemistry, Jilin University, 2519 Jiefang Road, Changchun, 130021, P. R. China
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4
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Falling LJ, Jang W, Laha S, Götsch T, Terban MW, Bette S, Mom R, Velasco-Vélez JJ, Girgsdies F, Teschner D, Tarasov A, Chuang CH, Lunkenbein T, Knop-Gericke A, Weber D, Dinnebier R, Lotsch BV, Schlögl R, Jones TE. Atomic Insights into the Competitive Edge of Nanosheets Splitting Water. J Am Chem Soc 2024. [PMID: 39319770 DOI: 10.1021/jacs.4c10312] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/26/2024]
Abstract
The oxygen evolution reaction (OER) provides the protons for many electrocatalytic power-to-X processes, such as the production of green hydrogen from water or methanol from CO2. Iridium oxohydroxides (IOHs) are outstanding catalysts for this reaction because they strike a unique balance between activity and stability in acidic electrolytes. Within IOHs, this balance varies with the atomic structure. While amorphous IOHs perform best, they are least stable. The opposite is true for their crystalline counterparts. These rules-of-thumb are used to reduce the loading of scarce IOH catalysts and retain the performance. However, it is not fully understood how activity and stability are related at the atomic level, hampering rational design. Herein, we provide simple design rules (Figure 12) derived from the literature and various IOHs within this study. We chose crystalline IrOOH nanosheets as our lead material because they provide excellent catalyst utilization and a predictable structure. We found that IrOOH signals the chemical stability of crystalline IOHs while surpassing the activity of amorphous IOHs. Their dense bonding network of pyramidal trivalent oxygens (μ3Δ-O) provides structural integrity, while allowing reversible reduction to an electronically gapped state that diminishes the destructive effect of reductive potentials. The reactivity originates from coordinative unsaturated edge sites with radical character, i.e., μ1-O oxyls. By comparing to other IOHs and literature, we generalized our findings and synthesized a set of simple rules that allow prediction of stability and reactivity of IOHs from atomistic models. We hope that these rules will inspire atomic design strategies for future OER catalysts.
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Affiliation(s)
- Lorenz J Falling
- Fritz Haber Institute of the Max Planck Society, Berlin 14195, Germany
- School of Natural Sciences, Technical University, Munich 85748, Germany
| | - Woosun Jang
- Fritz Haber Institute of the Max Planck Society, Berlin 14195, Germany
- Integrated Science & Engineering Division, Underwood International College, Yonsei University, Incheon 21983, Republic of Korea
| | - Sourav Laha
- Department of Chemistry, National Institute of Technology Durgapur, Durgapur 713209, West Bengal, India
- Max Planck Institute for Solid State Research, Stuttgart 70569, Germany
| | - Thomas Götsch
- Fritz Haber Institute of the Max Planck Society, Berlin 14195, Germany
| | - Maxwell W Terban
- Max Planck Institute for Solid State Research, Stuttgart 70569, Germany
| | - Sebastian Bette
- Max Planck Institute for Solid State Research, Stuttgart 70569, Germany
| | - Rik Mom
- Fritz Haber Institute of the Max Planck Society, Berlin 14195, Germany
- Leiden Institute of Chemistry, Leiden University, 2300 Leiden, RA, Netherlands
| | - Juan-Jesús Velasco-Vélez
- Fritz Haber Institute of the Max Planck Society, Berlin 14195, Germany
- Experiments Division, ALBA Synchrotron Light Source, Cerdanyola del Vallés, Barcelona 08290, Spain
| | - Frank Girgsdies
- Fritz Haber Institute of the Max Planck Society, Berlin 14195, Germany
| | - Detre Teschner
- Fritz Haber Institute of the Max Planck Society, Berlin 14195, Germany
| | - Andrey Tarasov
- Fritz Haber Institute of the Max Planck Society, Berlin 14195, Germany
| | - Cheng-Hao Chuang
- Department of Physics, Tamkang University, New Taipei City 251301, Taiwan
| | - Thomas Lunkenbein
- Fritz Haber Institute of the Max Planck Society, Berlin 14195, Germany
| | - Axel Knop-Gericke
- Fritz Haber Institute of the Max Planck Society, Berlin 14195, Germany
| | - Daniel Weber
- Max Planck Institute for Solid State Research, Stuttgart 70569, Germany
- Wallenberg Initiative Materials Science for Sustainability, Chemistry and Chemical Engineering, Chalmers University of Technology, Gothenburg 41296, Sweden
| | - Robert Dinnebier
- Max Planck Institute for Solid State Research, Stuttgart 70569, Germany
| | - Bettina V Lotsch
- Max Planck Institute for Solid State Research, Stuttgart 70569, Germany
| | - Robert Schlögl
- Fritz Haber Institute of the Max Planck Society, Berlin 14195, Germany
| | - Travis E Jones
- Fritz Haber Institute of the Max Planck Society, Berlin 14195, Germany
- Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
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5
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Jones TE, Teschner D, Piccinin S. Toward Realistic Models of the Electrocatalytic Oxygen Evolution Reaction. Chem Rev 2024; 124:9136-9223. [PMID: 39038270 DOI: 10.1021/acs.chemrev.4c00171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/24/2024]
Abstract
The electrocatalytic oxygen evolution reaction (OER) supplies the protons and electrons needed to transform renewable electricity into chemicals and fuels. However, the OER is kinetically sluggish; it operates at significant rates only when the applied potential far exceeds the reversible voltage. The origin of this overpotential is hidden in a complex mechanism involving multiple electron transfers and chemical bond making/breaking steps. Our desire to improve catalytic performance has then made mechanistic studies of the OER an area of major scientific inquiry, though the complexity of the reaction has made understanding difficult. While historically, mechanistic studies have relied solely on experiment and phenomenological models, over the past twenty years ab initio simulation has been playing an increasingly important role in developing our understanding of the electrocatalytic OER and its reaction mechanisms. In this Review we cover advances in our mechanistic understanding of the OER, organized by increasing complexity in the way through which the OER is modeled. We begin with phenomenological models built using experimental data before reviewing early efforts to incorporate ab initio methods into mechanistic studies. We go on to cover how the assumptions in these early ab initio simulations─no electric field, electrolyte, or explicit kinetics─have been relaxed. Through comparison with experimental literature, we explore the veracity of these different assumptions. We summarize by discussing the most critical open challenges in developing models to understand the mechanisms of the OER.
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Affiliation(s)
- Travis E Jones
- Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
- Department of Inorganic Chemistry, Fritz-Haber-Institute of the Max-Planck-Society, Berlin 14195, Germany
| | - Detre Teschner
- Department of Inorganic Chemistry, Fritz-Haber-Institute of the Max-Planck-Society, Berlin 14195, Germany
- Department of Heterogeneous Reactions, Max-Planck-Institute for Chemical Energy Conversion, Mülheim an der Ruhr 45470, Germany
| | - Simone Piccinin
- Consiglio Nazionale delle Ricerche, Istituto Officina dei Materiali, Trieste 34136, Italy
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6
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Yu H, Ji Y, Li C, Zhu W, Wang Y, Hu Z, Zhou J, Pao CW, Huang WH, Li Y, Huang X, Shao Q. Strain-Triggered Distinct Oxygen Evolution Reaction Pathway in Two-Dimensional Metastable Phase IrO 2 via CeO 2 Loading. J Am Chem Soc 2024; 146:20251-20262. [PMID: 38996085 DOI: 10.1021/jacs.4c05204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/14/2024]
Abstract
A strain engineering strategy is crucial for designing a high-performance catalyst. However, how to control the strain in metastable phase two-dimensional (2D) materials is technically challenging due to their nanoscale sizes. Here, we report that cerium dioxide (CeO2) is an ideal loading material for tuning the in-plane strain in 2D metastable 1T-phase IrO2 (1T-IrO2) via an in situ growth method. Surprisingly, 5% CeO2 loaded 1T-IrO2 with 8% compressive strain achieves an overpotential of 194 mV at 10 mA cm-2 in a three-electrode system. It also retained a high current density of 900 mA cm-2 at a cell voltage of 1.8 V for a 400 h stability test in the proton-exchange membrane device. More importantly, the Fourier transform infrared measurements and density functional theory calculation reveal that the CeO2 induced strained 1T-IrO2 directly undergo the *O-*O radical coupling mechanism for O2 generation, totally different from the traditional adsorbate evolution mechanism in pure 1T-IrO2. These findings illustrate the important role of strain engineering in paving up an optimal catalytic pathway in order to achieve robust electrochemical performance.
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Affiliation(s)
- Hao Yu
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, Jiangsu 215123, China
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou, Jiangsu 215123, China
| | - Yujin Ji
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou, Jiangsu 215123, China
| | - Chenchen Li
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, Jiangsu 215123, China
| | - Wenxiang Zhu
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou, Jiangsu 215123, China
| | - Yue Wang
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, Jiangsu 215123, China
| | - Zhiwei Hu
- Max Planck Institute for Chemical Physics of Solids, Nothnitzer Strasse 40, Dresden 01187, Germany
| | - Jing Zhou
- Zhejiang Institute of Photoelectronics & Zhejiang Institute for Advanced Light Source, Zhejiang Normal University, Jinhua, Zhejiang 321004, China
| | - Chih-Wen Pao
- National Synchrotron Radiation Research Center, 101 Hsin-Ann Road, Hsinchu 30076, Taiwan
| | - Wei-Hsiang Huang
- National Synchrotron Radiation Research Center, 101 Hsin-Ann Road, Hsinchu 30076, Taiwan
| | - Youyong Li
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou, Jiangsu 215123, China
| | - Xiaoqing Huang
- State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
- Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province (IKKEM), Xiamen 361005, China
| | - Qi Shao
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, Jiangsu 215123, China
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7
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Li W, Yin D, Li P, Zhao X, Hao S. Iridium single-atoms anchored on a TiO 2 support as an efficient catalyst for the hydrogen evolution reaction. Phys Chem Chem Phys 2024; 26:19822-19830. [PMID: 38988227 DOI: 10.1039/d4cp01878h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/12/2024]
Abstract
Single-atom catalysts (SACs) play a vital role in the hydrogen evolution reaction (HER) owing to the highly desirable atom efficiency and the minimal amount of precious metals. Herein, we use TiO2 nanosheets to anchor stable atomically dispersed iridium (Ir) to be used as a catalyst (Ir@TiO2) for the HER. The atomic dispersion of Ir on the TiO2 substrate is confirmed by aberration-corrected scanning transmission electron microscopy and it is anchored by numerous surface functional groups on abundantly exposed basal planes in TiO2. In acidic media, the Ir@TiO2 catalyst (1.35 wt% Ir) shows a low overpotential (41 mV at 10 mA cm-2), a small Tafel slope of 42 mV dec-1, and a decent durability for 1000 cycles of the HER with the polarization curve having only a 1 mV shift, which are comparable with those of a commercial Pt/C catalyst with 20 wt% Pt. This work paves a way to design Ir atomically anchored catalysts with low cost and high activity.
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Affiliation(s)
- Wenxuan Li
- College of Electrical Engineering, Chuzhou Polytechnic, Chuzhou 239000, China.
| | - Dashu Yin
- College of Electrical Engineering, Chuzhou Polytechnic, Chuzhou 239000, China.
| | - Peng Li
- College of Electrical Engineering, Chuzhou Polytechnic, Chuzhou 239000, China.
| | - Xinhua Zhao
- College of Electrical Engineering, Chuzhou Polytechnic, Chuzhou 239000, China.
| | - Shengcai Hao
- Beijing Academy of Science and Technology, Beijing 100089, China.
- College of Materials Science and Engineering, Beijing Jiaotong University, Beijing 100044, China
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8
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Jing X, Dong J, Mao Y, Zhou L, Ding J, Dong H, Zhang L, Zhang Y, Zhang W. Synergistic Effect Enables the Dual-Metal Doped Cobalt Telluride Particles as Potential Electrocatalysts for Oxygen Evolution in Alkaline Electrolyte. Inorg Chem 2024; 63:12764-12773. [PMID: 38950312 DOI: 10.1021/acs.inorgchem.4c00921] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/03/2024]
Abstract
Cobalt (Co)-based materials have been widely investigated as hopeful noble-metal-free alternatives for the oxygen evolution reaction (OER) in alkaline electrolytes, which is crucial for generating hydrogen by water electrolysis. Herein, cobalt-based telluride particles with good electronic conductivity as anodic electrocatalysts were prepared under vacuum by the solid-state strategy, which display remarkable activities toward the OER. Nickel (Ni) and iron (Fe) codoped cobalt telluride (NiFe-CoTe) exhibits an overpotential of 321 mV to achieve a current density of 10 mA cm-2 and a Tafel slope of 51.8 mV dec-1, outperforming the performances of CoTe, CoTe2, and IrO2. According to the DFT calculation, the adsorbed hydroxyl-assisted adsorbate evolution mechanism was proposed for the OER process of NiFe-CoTe, which reveals the synergetic effect toward OER induced by codoping of the Ni and Fe atoms. This work proposes a rational strategy to prepare cobalt-based tellurides as efficient OER catalysts in alkaline electrolytes, providing a new strategy to prepare and regulate metal-based tellurides for catalysis and beyond.
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Affiliation(s)
- Xiaoxiao Jing
- Henan Key Laboratory of Quantum Materials and Quantum Energy, School of Quantum Information Future Technology, Henan University, Zhengzhou 450046, China
| | - Jinyuan Dong
- Henan Key Laboratory of Quantum Materials and Quantum Energy, School of Quantum Information Future Technology, Henan University, Zhengzhou 450046, China
| | - Yuguang Mao
- Henan Key Laboratory of Quantum Materials and Quantum Energy, School of Quantum Information Future Technology, Henan University, Zhengzhou 450046, China
| | - Lingyan Zhou
- Henan Key Laboratory of Quantum Materials and Quantum Energy, School of Quantum Information Future Technology, Henan University, Zhengzhou 450046, China
| | - Jiabao Ding
- Henan Key Laboratory of Quantum Materials and Quantum Energy, School of Quantum Information Future Technology, Henan University, Zhengzhou 450046, China
| | - Huilong Dong
- School of Materials Engineering, Changshu Institute of Technology, Changshu, Jiangsu 215500, China
- National Center for International Research on Intelligent Nano-Materials and Detection Technology in Environmental Protection, Soochow University, Suzhou 215123, China
| | - Linjuan Zhang
- Key Laboratory of Interfacial Physics and Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
| | - Yuxuan Zhang
- Key Laboratory of Interfacial Physics and Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
| | - Weifeng Zhang
- Henan Key Laboratory of Quantum Materials and Quantum Energy, School of Quantum Information Future Technology, Henan University, Zhengzhou 450046, China
- Institute of Quantum Materials and Physics, Henan Academy of Sciences, Zhengzhou 450046, China
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9
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Chen L, Zhao W, Zhang J, Liu M, Jia Y, Wang R, Chai M. Recent Research on Iridium-Based Electrocatalysts for Acidic Oxygen Evolution Reaction from the Origin of Reaction Mechanism. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024:e2403845. [PMID: 38940392 DOI: 10.1002/smll.202403845] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2024] [Revised: 06/18/2024] [Indexed: 06/29/2024]
Abstract
As the anode reaction of proton exchange membrane water electrolysis (PEMWE), the acidic oxygen evolution reaction (OER) is one of the main obstacles to the practical application of PEMWE due to its sluggish four-electron transfer process. The development of high-performance acidic OER electrocatalysts has become the key to improving the reaction kinetics. To date, although various excellent acidic OER electrocatalysts have been widely researched, Ir-based nanomaterials are still state-of-the-art electrocatalysts. Hence, a comprehensive and in-depth understanding of the reaction mechanism of Ir-based electrocatalysts is crucial for the precise optimization of catalytic performance. In this review, the origin and nature of the conventional adsorbate evolution mechanism (AEM) and the derived volcanic relationship on Ir-based electrocatalysts for acidic OER processes are summarized and some optimization strategies for Ir-based electrocatalysts based on the AEM are introduced. To further investigate the development strategy of high-performance Ir-based electrocatalysts, several unconventional OER mechanisms including dual-site mechanism and lattice oxygen mediated mechanism, and their applications are introduced in detail. Thereafter, the active species on Ir-based electrocatalysts at acidic OER are summarized and classified into surface Ir species and O species. Finally, the future development direction and prospect of Ir-based electrocatalysts for acidic OER are put forward.
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Affiliation(s)
- Ligang Chen
- State Power Investment Corporation Hydrogen Energy Company, Limited, Beijing, 102600, China
| | - Wei Zhao
- State Power Investment Corporation Hydrogen Energy Company, Limited, Beijing, 102600, China
| | - Juntao Zhang
- Key Laboratory for Special Functional Materials of Ministry of Education, National & Local Joint Engineering Research Center for High-efficiency Display and Lighting Technology, School of Materials Science and Engineering, Collaborative Innovation Center of Nano Functional Materials and Applications, Henan University, Kaifeng, 475004, China
| | - Min Liu
- State Power Investment Corporation Hydrogen Energy Company, Limited, Beijing, 102600, China
| | - Yin Jia
- State Power Investment Corporation Hydrogen Energy Company, Limited, Beijing, 102600, China
| | - Ruzhi Wang
- Institute of Advanced Energy Materials and Devices, College of Material Science and Engineering; Key Laboratory of Advanced Functional Materials of Education Ministry of China, Beijing University of Technology, Beijing, 100124, China
| | - Maorong Chai
- State Power Investment Corporation Hydrogen Energy Company, Limited, Beijing, 102600, China
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10
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Li R, Liu J, Yin G, Sun Y, Liu F, Gan J, Gao S. Nest-Scheme RuIrLa Nanocrystals by NP-to-NP Oriented Assembly: Coherent Strain Fields-Driven Band Structure Splitting for Efficient Acidic Water Oxidation. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024:e2403492. [PMID: 38923702 DOI: 10.1002/smll.202403492] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2024] [Revised: 06/13/2024] [Indexed: 06/28/2024]
Abstract
Atomic substructure engineering provides new opportunities for the designing newly and efficient catalysts with diverse atom ensembles, trimmed electron bands, and way-out coordination environments, creating unique contributing to concertedly catalyze water oxidation, which is of great significance for proton exchange membrane water electrolysis (PEMWE). Herein, nest-scheme RuIrLa nanocrystals with dense coherent interfaces as built-in substructures are firstly fabricated by using commercial ZnO particles as acid-removable templates, through a La-stabilized coherent epitaxial growth of nanoparticles (NPs). The obtained nests exhibit a low overpotential of 198 mV at 10 mA cm-2, and the RuIrLa||Pt/C module equipped in PEMWE operates stably at a cell voltage potential of 1.69 V at 100 mA cm-2 in 0.5 M H2SO4 for 55 h, which is far beyond the current IrO2||Pt/C. Within the nests, the position at the interface shows high tensile/compressive strain, significantly reducing the OER activation energy. More importantly, the La termination-stabilized coherent interfaces within the nests creates a unique self-healing process for the outstanding long-term stability. This work provides a promising substructure engineering to develop efficient catalysts with abundant substructures, such as coherent interfaces, dislocations, or grain boundaries, thereby realizing concerted improvement of activity and durability toward water oxidation.
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Affiliation(s)
- Rongchao Li
- Beijing Key Laboratory of Electrochemical Process and Technology for Materials, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Jingjun Liu
- Beijing Key Laboratory of Electrochemical Process and Technology for Materials, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Guanwang Yin
- Beijing Key Laboratory of Electrochemical Process and Technology for Materials, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Yanhui Sun
- Beijing Key Laboratory of Electrochemical Process and Technology for Materials, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Feng Liu
- Yunnan Precious Metals Lab, Kunming, 650100, China
| | - Jun Gan
- Yunnan Precious Metals Lab, Kunming, 650100, China
| | - Shixin Gao
- Yunnan Precious Metals Lab, Kunming, 650100, China
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11
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Ram R, Xia L, Benzidi H, Guha A, Golovanova V, Garzón Manjón A, Llorens Rauret D, Sanz Berman P, Dimitropoulos M, Mundet B, Pastor E, Celorrio V, Mesa CA, Das AM, Pinilla-Sánchez A, Giménez S, Arbiol J, López N, García de Arquer FP. Water-hydroxide trapping in cobalt tungstate for proton exchange membrane water electrolysis. Science 2024; 384:1373-1380. [PMID: 38900890 DOI: 10.1126/science.adk9849] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Accepted: 05/13/2024] [Indexed: 06/22/2024]
Abstract
The oxygen evolution reaction is the bottleneck to energy-efficient water-based electrolysis for the production of hydrogen and other solar fuels. In proton exchange membrane water electrolysis (PEMWE), precious metals have generally been necessary for the stable catalysis of this reaction. In this work, we report that delamination of cobalt tungstate enables high activity and durability through the stabilization of oxide and water-hydroxide networks of the lattice defects in acid. The resulting catalysts achieve lower overpotentials, a current density of 1.8 amperes per square centimeter at 2 volts, and stable operation up to 1 ampere per square centimeter in a PEMWE system at industrial conditions (80°C) at 1.77 volts; a threefold improvement in activity; and stable operation at 1 ampere per square centimeter over the course of 600 hours.
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Affiliation(s)
- Ranit Ram
- ICFO - Institut de Ciències Fotòniques, The Barcelona Institute of Science and Technology, 08860 Castelldefels, Barcelona, Spain
| | - Lu Xia
- ICFO - Institut de Ciències Fotòniques, The Barcelona Institute of Science and Technology, 08860 Castelldefels, Barcelona, Spain
| | - Hind Benzidi
- ICIQ-CERCA - Institute of Chemical Research of Catalonia, The Barcelona Institute of Science and Technology, 43007 Tarragona, Spain
| | - Anku Guha
- ICFO - Institut de Ciències Fotòniques, The Barcelona Institute of Science and Technology, 08860 Castelldefels, Barcelona, Spain
| | - Viktoria Golovanova
- ICFO - Institut de Ciències Fotòniques, The Barcelona Institute of Science and Technology, 08860 Castelldefels, Barcelona, Spain
| | - Alba Garzón Manjón
- Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and BIST, Campus UAB, Bellaterra, 08193 Barcelona, Catalonia, Spain
| | - David Llorens Rauret
- Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and BIST, Campus UAB, Bellaterra, 08193 Barcelona, Catalonia, Spain
| | - Pol Sanz Berman
- ICIQ-CERCA - Institute of Chemical Research of Catalonia, The Barcelona Institute of Science and Technology, 43007 Tarragona, Spain
| | - Marinos Dimitropoulos
- ICFO - Institut de Ciències Fotòniques, The Barcelona Institute of Science and Technology, 08860 Castelldefels, Barcelona, Spain
| | - Bernat Mundet
- Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and BIST, Campus UAB, Bellaterra, 08193 Barcelona, Catalonia, Spain
| | - Ernest Pastor
- CNRS, Université de Rennes, IPR (Institut de Physique de Rennes) - UMR 6251, Rennes, France
- CNRS, Université de Rennes, DYNACOM (Dynamical Control of Materials Laboratory) - IRL2015, The University of Tokyo, 7-3-1 Hongo, Tokyo 113-0033, Japan
| | - Veronica Celorrio
- Diamond Light Source, Harwell Science and Innovation Campus, Didcot OX11 0DE, UK
| | - Camilo A Mesa
- Institute of Advanced Materials (INAM), Universitat Jaume I, 12006 Castelló, Spain
| | - Aparna M Das
- ICFO - Institut de Ciències Fotòniques, The Barcelona Institute of Science and Technology, 08860 Castelldefels, Barcelona, Spain
| | - Adrián Pinilla-Sánchez
- ICFO - Institut de Ciències Fotòniques, The Barcelona Institute of Science and Technology, 08860 Castelldefels, Barcelona, Spain
| | - Sixto Giménez
- Institute of Advanced Materials (INAM), Universitat Jaume I, 12006 Castelló, Spain
| | - Jordi Arbiol
- Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and BIST, Campus UAB, Bellaterra, 08193 Barcelona, Catalonia, Spain
- ICREA, Pg. Lluís Companys 23, 08010 Barcelona, Spain
| | - Núria López
- ICIQ-CERCA - Institute of Chemical Research of Catalonia, The Barcelona Institute of Science and Technology, 43007 Tarragona, Spain
| | - F Pelayo García de Arquer
- ICFO - Institut de Ciències Fotòniques, The Barcelona Institute of Science and Technology, 08860 Castelldefels, Barcelona, Spain
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12
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Lim SS, Sivanantham A, Choi C, Shanmugam S, Lansac Y, Jang YH. Active Sites of Mixed-Metal Core-Shell Oxygen Evolution Reaction Catalysts: FeO 4 Sites on Ni Cores or NiN 4 Sites in C Shells? ACS OMEGA 2024; 9:25748-25755. [PMID: 38911812 PMCID: PMC11190911 DOI: 10.1021/acsomega.3c09920] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Revised: 05/15/2024] [Accepted: 05/20/2024] [Indexed: 06/25/2024]
Abstract
Water electrolysis for clean hydrogen production requires high-activity, high-stability, and low-cost catalysts for its particularly sluggish half-reaction, the oxygen evolution reaction (OER). Currently, the most promising of such catalysts working in alkaline conditions is a core-shell nanostructure, NiFe@NC, whose Fe-doped Ni (NiFe) nanoparticles are encapsulated and interconnected by N-doped graphitic carbon (NC) layers, but the exact OER mechanism of these catalysts is still unclear, and even the location of the OER active site, either on the core side or on the shell side, is still debated. Therefore, we herein derive a plausible active-site model for each side based on various experimental evidence and density functional theory calculations and then build OER free-energy diagrams on both sides to determine the active-site location. The core-side model is an FeO4-type (rather than NiO4-type) active site where an Fe atom sits on Ni oxide layers grown on top of the core surface during catalyst activation, whose facile dissolution provides an explanation for the activity loss of such catalysts directly exposed to the electrolyte. The shell-side model is a NiN4-type (rather than FeN4-type) active site where a Ni atom is intercalated into the porphyrin-like N4C site of the NC shell during catalyst synthesis. Their OER free-energy diagrams indicate that both sites require similar amounts of overpotentials, despite a complete shift in their potential-determining steps, i.e., the final O2 evolution from the oxophilic Fe on the core and the initial OH adsorption to the hydrophobic shell. We conclude that the major active sites are located on the core, but the NC shell not only protects the vulnerable FeO4 active sites on the core from the electrolyte but also provides independent active sites, owing to the N doping.
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Affiliation(s)
- Sung Soo Lim
- Department
of Energy Science and Engineering, DGIST, Daegu 42988, Korea
| | | | - Changwon Choi
- Department
of Energy Science and Engineering, DGIST, Daegu 42988, Korea
| | | | - Yves Lansac
- Department
of Energy Science and Engineering, DGIST, Daegu 42988, Korea
- GREMAN,
UMR 7347, Université de Tours, CNRS, INSA CVL, 37200 Tours, France
- LPS,
CNRS UMR 8502, Université Paris-Saclay, 91405 Orsay, France
| | - Yun Hee Jang
- Department
of Energy Science and Engineering, DGIST, Daegu 42988, Korea
- GREMAN,
UMR 7347, Université de Tours, CNRS, INSA CVL, 37200 Tours, France
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13
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Abed J, Heras-Domingo J, Sanspeur RY, Luo M, Alnoush W, Meira DM, Wang H, Wang J, Zhou J, Zhou D, Fatih K, Kitchin JR, Higgins D, Ulissi ZW, Sargent EH. Pourbaix Machine Learning Framework Identifies Acidic Water Oxidation Catalysts Exhibiting Suppressed Ruthenium Dissolution. J Am Chem Soc 2024; 146:15740-15750. [PMID: 38830239 DOI: 10.1021/jacs.4c01353] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2024]
Abstract
The demand for green hydrogen has raised concerns over the availability of iridium used in oxygen evolution reaction catalysts. We identify catalysts with the aid of a machine learning-aided computational pipeline trained on more than 36,000 mixed metal oxides. The pipeline accurately predicts Pourbaix decomposition energy (Gpbx) from unrelaxed structures with a mean absolute error of 77 meV per atom, enabling us to screen 2070 new metallic oxides with respect to their prospective stability under acidic conditions. The search identifies Ru0.6Cr0.2Ti0.2O2 as a candidate having the promise of increased durability: experimentally, we find that it provides an overpotential of 267 mV at 100 mA cm-2 and that it operates at this current density for over 200 h and exhibits a rate of overpotential increase of 25 μV h-1. Surface density functional theory calculations reveal that Ti increases metal-oxygen covalency, a potential route to increased stability, while Cr lowers the energy barrier of the HOO* formation rate-determining step, increasing activity compared to RuO2 and reducing overpotential by 40 mV at 100 mA cm-2 while maintaining stability. In situ X-ray absorption spectroscopy and ex situ ptychography-scanning transmission X-ray microscopy show the evolution of a metastable structure during the reaction, slowing Ru mass dissolution by 20× and suppressing lattice oxygen participation by >60% compared to RuO2.
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Affiliation(s)
- Jehad Abed
- Department of Materials Science and Engineering, University of Toronto, 184 College Street, Toronto, Ontario M5S 3E4, Canada
- Department of Electrical and Computer Engineering, University of Toronto, 35 St George Street, Toronto, Ontario M5S 1A4, Canada
| | - Javier Heras-Domingo
- Department of Chemical Engineering, Carnegie Mellon University, 5000 Forbes Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Rohan Yuri Sanspeur
- Department of Chemical Engineering, Carnegie Mellon University, 5000 Forbes Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Mingchuan Luo
- School of Materials Science and Engineering, Peking University, Beijing 100871, P. R. China
| | - Wajdi Alnoush
- Department of Chemical Engineering, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4L7, Canada
| | - Debora Motta Meira
- CLS@APS Sector 20, Advanced Photon Source, Argonne National Laboratory, 9700 S. Cass Avenue, Argonne, Illinois 60439, United States
- Canadian Light Source Inc., 44 Innovation Boulevard, Saskatoon, Saskatchewan S7N 2 V3, Canada
| | - Hsiaotsu Wang
- Canadian Light Source Inc., 44 Innovation Boulevard, Saskatoon, Saskatchewan S7N 2 V3, Canada
| | - Jian Wang
- Canadian Light Source Inc., 44 Innovation Boulevard, Saskatoon, Saskatchewan S7N 2 V3, Canada
| | - Jigang Zhou
- Canadian Light Source Inc., 44 Innovation Boulevard, Saskatoon, Saskatchewan S7N 2 V3, Canada
| | - Daojin Zhou
- Department of Electrical and Computer Engineering, University of Toronto, 35 St George Street, Toronto, Ontario M5S 1A4, Canada
| | - Khalid Fatih
- Clean Energy Innovation, National Research Council Canada, 4250 Wesbrook Mall, Vancouver, British Columbia V6T 1W5, Canada
| | - John R Kitchin
- Department of Chemical Engineering, Carnegie Mellon University, 5000 Forbes Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Drew Higgins
- Department of Chemical Engineering, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4L7, Canada
| | - Zachary W Ulissi
- Department of Chemical Engineering, Carnegie Mellon University, 5000 Forbes Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Edward H Sargent
- Department of Electrical and Computer Engineering, University of Toronto, 35 St George Street, Toronto, Ontario M5S 1A4, Canada
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14
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Han X, Mou T, Islam A, Kang S, Chang Q, Xie Z, Zhao X, Sasaki K, Rodriguez JA, Liu P, Chen JG. Theoretical Prediction and Experimental Verification of IrO x Supported on Titanium Nitride for Acidic Oxygen Evolution Reaction. J Am Chem Soc 2024. [PMID: 38859684 DOI: 10.1021/jacs.4c02936] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/12/2024]
Abstract
Reducing iridium (Ir) catalyst loading for acidic oxygen evolution reaction (OER) is a critical strategy for large-scale hydrogen production via proton exchange membrane (PEM) water electrolysis. However, simultaneously achieving high activity, long-term stability, and reduced material cost remains challenging. To address this challenge, we develop a framework by combining density functional theory (DFT) prediction using model surfaces and proof-of-concept experimental verification using thin films and nanoparticles. DFT results predict that oxidized Ir monolayers over titanium nitride (IrOx/TiN) should display higher OER activity than IrOx while reducing Ir loading. This prediction is verified by depositing Ir monolayers over TiN thin films via physical vapor deposition. The promising thin film results are then extended to commercially viable powder IrOx/TiN catalysts, which demonstrate a lower overpotential and higher mass activity than commercial IrO2 and long-term stability of 250 h to maintain a current density of 10 mA cm-2. The superior OER performance of IrOx/TiN is further confirmed using a proton exchange membrane water electrolyzer (PEMWE), which shows a lower cell voltage than commercial IrO2 to achieve a current density of 1 A cm-2. Both DFT and in situ X-ray absorption spectroscopy reveal that the high OER performance of IrOx/TiN strongly depends on the IrOx-TiN interaction via direct Ir-Ti bonding. This study highlights the importance of close interaction between theoretical prediction based on mechanistic understanding and experimental verification based on thin film model catalysts to facilitate the development of more practical powder IrOx/TiN catalysts with high activity and stability for acidic OER.
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Affiliation(s)
- Xue Han
- Chemistry Division, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Tianyou Mou
- Chemistry Division, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Arephin Islam
- Chemistry Division, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Sinwoo Kang
- Chemistry Division, Brookhaven National Laboratory, Upton, New York 11973, United States
- Department of Chemical Engineering, Columbia University, New York, New York 10027, United States
| | - Qiaowan Chang
- School of Chemical Engineering and Bioengineering, Washington State University, Pullman, Washington 99164, United States
| | - Zhenhua Xie
- Chemistry Division, Brookhaven National Laboratory, Upton, New York 11973, United States
- Department of Chemical Engineering, Columbia University, New York, New York 10027, United States
| | - Xueru Zhao
- Chemistry Division, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Kotaro Sasaki
- Chemistry Division, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - José A Rodriguez
- Chemistry Division, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Ping Liu
- Chemistry Division, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Jingguang G Chen
- Chemistry Division, Brookhaven National Laboratory, Upton, New York 11973, United States
- Department of Chemical Engineering, Columbia University, New York, New York 10027, United States
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15
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Exner KS. Four Generations of Volcano Plots for the Oxygen Evolution Reaction: Beyond Proton-Coupled Electron Transfer Steps? Acc Chem Res 2024; 57:1336-1345. [PMID: 38621676 PMCID: PMC11080045 DOI: 10.1021/acs.accounts.4c00048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2024] [Revised: 03/26/2024] [Accepted: 03/27/2024] [Indexed: 04/17/2024]
Abstract
ConspectusDue to its importance for electrolyzers or metal-air batteries for energy conversion or storage, there is huge interest in the development of high-performance materials for the oxygen evolution reaction (OER). Theoretical investigations have aided the search for active material motifs through the construction of volcano plots for the kinetically sluggish OER, which involves the transfer of four proton-electron pairs to form a single oxygen molecule. The theory-driven volcano approach has gained unprecedented popularity in the catalysis and energy communities, largely due to its simplicity, as adsorption free energies can be used to approximate the electrocatalytic activity by heuristic descriptors.In the last two decades, the binding-energy-based volcano method has witnessed a renaissance with special concepts being developed to incorporate missing factors into the analysis. To this end, this Account summarizes and discusses the different generations of volcano plots for the example of the OER. While first-generation methods relied on the assessment of the thermodynamic information for the OER reaction intermediates by means of scaling relations, the second and third generations developed strategies to include overpotential and kinetic effects into the analysis of activity trends. Finally, the fourth generation of volcano approaches allowed the incorporation of various mechanistic pathways into the volcano methodology, thus paving the path toward data- and mechanistic-driven volcano plots in electrocatalysis.Although the concept of volcano plots has been significantly expanded in recent years, further research activities are discussed by challenging one of the main paradigms of the volcano concept. To date, the evaluation of activity trends relies on the assumption of proton-coupled electron transfer steps (CPET), even though there is experimental evidence of sequential proton-electron transfer (SPET) steps. While the computational assessment of SPET for solid-state electrodes is ambitious, it is strongly suggested to comprehend their importance in energy conversion and storage processes, including the OER. This can be achieved by knowledge transfer from homogeneous to heterogeneous electrocatalysis and by focusing on the material class of single-atom catalysts in which the active center is well defined. The derived concept of how to analyze the importance of SPET for mechanistic pathways in the OER over solid-state electrodes could further shape our understanding of the proton-electron transfer steps at electrified solid/liquid interfaces, which is crucial for further progress toward sustainable energy and climate neutrality.
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Affiliation(s)
- Kai S. Exner
- University
Duisburg-Essen, Faculty of Chemistry, Theoretical Inorganic Chemistry, Universitätsstraße 5, 45141 Essen, Germany
- Cluster
of Excellence RESOLV, 44801 Bochum, Germany
- Center
for Nanointegration (CENIDE) Duisburg-Essen, 47057 Duisburg, Germany
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16
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Kwon S, Stoerzinger KA, Rao R, Qiao L, Goddard WA, Shao-Horn Y. Facet-Dependent Oxygen Evolution Reaction Activity of IrO 2 from Quantum Mechanics and Experiments. J Am Chem Soc 2024; 146:11719-11725. [PMID: 38636103 DOI: 10.1021/jacs.3c14271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/20/2024]
Abstract
The diversity of chemical environments present on unique crystallographic facets can drive dramatic differences in catalytic activity and the reaction mechanism. By coupling experimental investigations of five different IrO2 facets and theory, we characterize the detailed elemental steps of the surface redox processes and the rate-limiting processes for the oxygen evolution reaction (OER). The predicted complex evolution of surface adsorbates and the associated charge transfer as a function of applied potential matches well with the distinct redox features observed experimentally for the five facets. Our microkinetic model from grand canonical quantum mechanics (GC-QM) calculations demonstrates mechanistic differences between nucleophilic attack and O-O coupling across facets, providing the rates as a function of applied potential. These GC-QM calculations explain the higher OER activity observed on the (100), (001), and (110) facets and the lower activity observed for the (101) and (111) facets. This combined study with theory and experiment brings new insights into the structural features that either promote or hinder the OER activity of IrO2, which are expected to provide parallels in structural effects on other oxide surfaces.
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Affiliation(s)
- Soonho Kwon
- Materials and Process Simulation Center (MSC), California Institute of Technology, Pasadena, California 91125, United States
| | - Kelsey A Stoerzinger
- Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Reshma Rao
- Department of Materials, Imperial College London, South Kensington Campus, London SW7 2AZ, U.K
| | - Liang Qiao
- Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, 1 Bethel Valley Road, Oak Ridge, Tennessee 37831, United States
| | - William A Goddard
- Materials and Process Simulation Center (MSC), California Institute of Technology, Pasadena, California 91125, United States
| | - Yang Shao-Horn
- Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
- Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
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17
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Liang C, Katayama Y, Tao Y, Morinaga A, Moss B, Celorrio V, Ryan M, Stephens IEL, Durrant JR, Rao RR. Role of Electrolyte pH on Water Oxidation for Iridium Oxides. J Am Chem Soc 2024; 146:8928-8938. [PMID: 38526298 PMCID: PMC10996014 DOI: 10.1021/jacs.3c12011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Revised: 03/06/2024] [Accepted: 03/07/2024] [Indexed: 03/26/2024]
Abstract
Understanding the effect of noncovalent interactions of intermediates at the polarized catalyst-electrolyte interface on water oxidation kinetics is key for designing more active and stable electrocatalysts. Here, we combine operando optical spectroscopy, X-ray absorption spectroscopy (XAS), and surface-enhanced infrared absorption spectroscopy (SEIRAS) to probe the effect of noncovalent interactions on the oxygen evolution reaction (OER) activity of IrOx in acidic and alkaline electrolytes. Our results suggest that the active species for the OER (Ir4.x+-*O) binds much stronger in alkaline compared with acid at low coverage, while the repulsive interactions between these species are higher in alkaline electrolytes. These differences are attributed to the larger fraction of water within the cation hydration shell at the interface in alkaline electrolytes compared to acidic electrolytes, which can stabilize oxygenated intermediates and facilitate long-range interactions between them. Quantitative analysis of the state energetics shows that although the *O intermediates bind more strongly than optimal in alkaline electrolytes, the larger repulsive interaction between them results in a significant weakening of *O binding with increasing coverage, leading to similar energetics of active states in acid and alkaline at OER-relevant potentials. By directly probing the electrochemical interface with complementary spectroscopic techniques, our work goes beyond conventional computational descriptors of the OER activity to explain the experimentally observed OER kinetics of IrOx in acidic and alkaline electrolytes.
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Affiliation(s)
- Caiwu Liang
- Department of
Materials, Imperial College London, Exhibition Road, SW72AZ London, United Kingdom
| | - Yu Katayama
- Department
of Energy and Environmental Materials, SANKEN (The Institute of Scientific
and Industrial Research), Osaka University, Mihogaoka 8-1, Osaka 567-0047, Ibaraki, Japan
| | - Yemin Tao
- Department of
Materials, Imperial College London, Exhibition Road, SW72AZ London, United Kingdom
| | - Asuka Morinaga
- Department
of Energy and Environmental Materials, SANKEN (The Institute of Scientific
and Industrial Research), Osaka University, Mihogaoka 8-1, Osaka 567-0047, Ibaraki, Japan
| | - Benjamin Moss
- Department
of Chemistry, Centre for Processable Electronics, Imperial College London, White city campus, W12 0BZ London, United Kingdom
| | - Verónica Celorrio
- Diamond
Light Source, Harwell Science and Innovation Campus, Didcot OX11 0DE, United
Kingdom
| | - Mary Ryan
- Department of
Materials, Imperial College London, Exhibition Road, SW72AZ London, United Kingdom
| | - Ifan E. L. Stephens
- Department of
Materials, Imperial College London, Exhibition Road, SW72AZ London, United Kingdom
| | - James R. Durrant
- Department
of Chemistry, Centre for Processable Electronics, Imperial College London, White city campus, W12 0BZ London, United Kingdom
| | - Reshma R. Rao
- Department of
Materials, Imperial College London, Exhibition Road, SW72AZ London, United Kingdom
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18
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Marsh P, Huang MH, Xia X, Tran I, Atanassov P, Cao H. Polarization Conforms Performance Variability in Amorphous Electrodeposited Iridium Oxide pH Sensors: A Thorough Surface Chemistry Investigation. SENSORS (BASEL, SWITZERLAND) 2024; 24:962. [PMID: 38339679 PMCID: PMC10856937 DOI: 10.3390/s24030962] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2023] [Revised: 01/24/2024] [Accepted: 01/29/2024] [Indexed: 02/12/2024]
Abstract
Electrodeposited amorphous hydrated iridium oxide (IrOx) is a promising material for pH sensing due to its high sensitivity and the ease of fabrication. However, durability and variability continue to restrict the sensor's effectiveness. Variation in probe films can be seen in both performance and fabrication, but it has been found that performance variation can be controlled with potentiostatic conditioning (PC). To make proper use of this technique, the morphological and chemical changes affecting the conditioning process must be understood. Here, a thorough study of this material, after undergoing PC in a pH-sensing-relevant potential regime, was conducted by voltammetry, scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS). Fitting of XPS data was performed, guided by raw trends in survey scans, core orbitals, and valence spectra, both XPS and UPS. The findings indicate that the PC process can repeatably control and conform performance and surface bonding to desired calibrations and distributions, respectively; PC was able to reduce sensitivity and offset ranges to as low as ±0.7 mV/pH and ±0.008 V, respectively, and repeat bonding distributions over ~2 months of sample preparation. Both Ir/O atomic ratios (shifting from 4:1 to over 4.5:1) and fitted components assigned hydroxide or oxide states based on the literature (low-voltage spectra being almost entirely with suggested hydroxide components, and high-voltage spectra almost entirely with suggested oxide components) trend across the polarization range. Self-consistent valence, core orbital, and survey quantitative trends point to a likely mechanism of ligand conversion from hydroxide to oxide, suggesting that the conditioning process enforces specific state mixtures that include both theoretical Ir(III) and Ir(IV) species, and raising the conditioning potential alters the surface species from an assumed mixture of Ir species to more oxidized Ir species.
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Affiliation(s)
- Paul Marsh
- Department of Electrical Engineering and Computer Science, University of California Irvine, Irvine, CA 92697, USA; (P.M.); (M.-H.H.)
| | - Mao-Hsiang Huang
- Department of Electrical Engineering and Computer Science, University of California Irvine, Irvine, CA 92697, USA; (P.M.); (M.-H.H.)
| | - Xing Xia
- Department of Electrical Engineering and Computer Science, University of California Irvine, Irvine, CA 92697, USA; (P.M.); (M.-H.H.)
| | - Ich Tran
- Irvine Materials Research Institute, University of California Irvine, Irvine, CA 92697, USA;
| | - Plamen Atanassov
- Department of Chemical and Biomolecular Engineering, University of California Irvine, Irvine, CA 92697, USA;
- Department of Materials Science and Engineering, University of California Irvine, Irvine, CA 92697, USA
| | - Hung Cao
- Department of Electrical Engineering and Computer Science, University of California Irvine, Irvine, CA 92697, USA; (P.M.); (M.-H.H.)
- Department of Biomedical Engineering, University of California Irvine, Irvine, CA 92697, USA
- Department of Computer Science, University of California Irvine, Irvine, CA 92697, USA
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19
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Ruffman C, Steenbergen KG, Garden AL, Gaston N. Dynamic sampling of liquid metal structures for theoretical studies on catalysis. Chem Sci 2023; 15:185-194. [PMID: 38131068 PMCID: PMC10732005 DOI: 10.1039/d3sc04416e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Accepted: 11/22/2023] [Indexed: 12/23/2023] Open
Abstract
Liquid metals have recently emerged as promising catalysts that can outcompete their solid counterparts for many reactions. Although theoretical modelling is extensively used to improve solid-state catalysts, there is currently no way to capture the interactions of adsorbates with a dynamic liquid metal. We propose a new approach based on ab initio molecular dynamics sampling of an adsorbate on a liquid catalyst. Using this approach, we describe time-resolved structures for formate adsorbed on liquid Ga-In, and for all intermediates in the methanol oxidation pathway on Ga-Pt. This yields a range of accessible adsorption energies that take into account the at-temperature motion of the liquid metal. We find that a previously proposed pathway for methanol oxidation on Ga-Pt results in unstable intermediates on a dynamic liquid surface, and propose that H desorption must occur during the path. The results showcase a more accurate way to treat liquid metal catalysts in this emerging field.
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Affiliation(s)
- Charlie Ruffman
- MacDiarmid Institute for Advanced Materials and Nanotechnology, Department of Physics, University of Auckland Private Bag 92019 Auckland New Zealand
| | - Krista G Steenbergen
- MacDiarmid Institute for Advanced Materials and Nanotechnology, Department of Physics, School of Chemical and Physical Sciences, Victoria University of Wellington PO Box 600 Wellington 6140 New Zealand
| | - Anna L Garden
- MacDiarmid Institute for Advanced Materials and Nanotechnology, Department of Chemistry, University of Otago P.O. Box 56 Dunedin 9054 New Zealand
| | - Nicola Gaston
- MacDiarmid Institute for Advanced Materials and Nanotechnology, Department of Physics, University of Auckland Private Bag 92019 Auckland New Zealand
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20
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Gao C, Kong L, Pan L, Li D, Lin J. A novel sacrificial solvent method to synthesize self-supporting Co 9S 8/Ni 3S 2 heterostructure catalyst for efficient oxygen evolution reaction. J Colloid Interface Sci 2023; 652:1756-1763. [PMID: 37672978 DOI: 10.1016/j.jcis.2023.08.186] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2023] [Revised: 08/10/2023] [Accepted: 08/28/2023] [Indexed: 09/08/2023]
Abstract
Synthesizing catalysts for efficient oxygen evolution reaction (OER) with lower cost and simpler design is of significant importance to achieve sustainable hydrogen production. In this work, we propose a novel "sacrificial solvent method" for the first time. Dicobalt octacarbonyl (Co2(CO)8), dimethyl sulfoxide (DMSO), and Ni foam (NF) were used as the raw materials in the solvothermal process. DMSO played the role of both the sacrificial solvent and the sulfur source. Through the self-consumption of DMSO, we finally obtained the Co9S8/Ni3S2 heterostructure supported on the NF (Co9S8/Ni3S2@NF) in one step. The Co9S8/Ni3S2@NF catalyst exhibited excellent OER activity in alkaline environment, with an overpotential of only 264 mV at a current density of 20 mA cm-2, a low Tafel slope of 68.28 mV dec-1 and maintained its current density after 20 h of constant potential testing. This work introduces a new method for synthesizing metal sulfide catalysts using DMSO as a sacrificial solvent. It provides broader opportunities for the development of more efficient and sustainable catalysts for energy conversion and storage.
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Affiliation(s)
- Chang Gao
- Key Laboratory of Eco-chemical Engineering, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, PR China
| | - Linghui Kong
- Key Laboratory of Eco-chemical Engineering, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, PR China
| | - Lu Pan
- Key Laboratory of Eco-chemical Engineering, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, PR China
| | - Dongxv Li
- Key Laboratory of Eco-chemical Engineering, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, PR China
| | - Jianjian Lin
- Key Laboratory of Eco-chemical Engineering, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, PR China.
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21
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Exner KS. Importance of the Walden Inversion for the Activity Volcano Plot of Oxygen Evolution. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023; 10:e2305505. [PMID: 37904648 PMCID: PMC10754130 DOI: 10.1002/advs.202305505] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Revised: 09/25/2023] [Indexed: 11/01/2023]
Abstract
Since the birth of the computational hydrogen electrode approach, it is considered that activity trends of electrocatalysts in a homologous series can be quantified by the construction of volcano plots. This method aims to steer materials discovery by the identification of catalysts with an improved reaction kinetics, though evaluated by means of thermodynamic descriptors. The conventional approach for the volcano plot of the oxygen evolution reaction (OER) relies on the assumption of the mononuclear mechanism, comprising the * OH, * O, and * OOH intermediates. In the present manuscript, two new mechanistic pathways, comprising the idea of the Walden inversion in that bond-breaking and bond-making occurs simultaneously, are factored into a potential-dependent OER activity volcano plot. Surprisingly, it turns out that the Walden inversion plays an important role since the activity volcano is governed by mechanistic pathways comprising Walden steps rather than by the traditionally assumed reaction mechanisms under typical OER conditions.
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Affiliation(s)
- Kai S. Exner
- Faculty of ChemistryTheoretical Inorganic ChemistryUniversity Duisburg‐EssenUniversitätsstraße 545141EssenGermany
- Cluster of Excellence RESOLV44801BochumGermany
- Center for Nanointegration (CENIDE) Duisburg‐Essen47057DuisburgGermany
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22
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Ding P, Wang T, Chang P, Guan L, Liu Z, Xu C, Tao J. Multiple-Strategy Design of MOF-Derived N, P Co-Doped MoS 2 Electrocatalysts Toward Efficient Alkaline Hydrogen Evolution and Overall Water Splitting. ACS APPLIED MATERIALS & INTERFACES 2023. [PMID: 37910808 DOI: 10.1021/acsami.3c11802] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2023]
Abstract
The multiple strategy design is crucial for enhancing the efficiency of nonprecious electrocatalysts in hydrogen evolution reaction (HER). In this work, we successfully synthesized N, P-codoped MoS2 nanosheets as highly efficient catalysts by integrating doping effects and phase engineering using a porous metal-organic framework (MOF) template. The electrocatalysts exhibit excellent bifunctional activity and stability in alkaline media. The N, P codoping induces electron redistribution to enhance conductivity and promote the intrinsic activity of the electrocatalysts. It optimizes the H* adsorption free energy and the dissociative adsorption energy, resulting in significant enhancement of HER activity. Moreover, the porous MOF structure exposes a large number of electrochemically active sites and facilitates the diffusion of ions and gases, which improve charge transfer efficiency and structural stability. Specifically, at a current density of 10 mA cm-2, the overpotential of the HER is only 32 mV, with a Tafel slope of 47 mV dec-1 and Faradaic efficiency as high as 98.51% (at 100 mA cm-2). Only a 338 mV overpotential is required to achieve a current density of 50 mA cm-2 for oxygen evolution reaction (OER), and a potential of 1.49 V (at 10 mA cm-2) is sufficient to drive overall water splitting. Further experimental measurements and first-principles calculations evidence that the exceptional performance is primarily attributed to the dual functionality of N and P dopants, which not only activate additional S sites but also initialize the phase transition of 2H to 1T-MoS2 to facilitate the rapid charge transfer. Through in-depth exploration of the combined design of multiple strategies for efficient catalysts, our work paves a new way for the development of future efficient nonprecious metal catalysts.
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Affiliation(s)
- Pengbo Ding
- School of Materials Science and Engineering, Hebei University of Technology, Tianjin 300132, China
| | - Tian Wang
- School of Sciences, Hebei University of Technology, Tianjin 300401, China
| | - Pu Chang
- School of Materials Science and Engineering, Hebei University of Technology, Tianjin 300132, China
| | - Lixiu Guan
- School of Sciences, Hebei University of Technology, Tianjin 300401, China
| | - Zongli Liu
- School of Materials Science and Engineering, Hebei University of Technology, Tianjin 300132, China
| | - Chao Xu
- School of Materials Science and Engineering, Hebei University of Technology, Tianjin 300132, China
| | - Junguang Tao
- School of Materials Science and Engineering, Hebei University of Technology, Tianjin 300132, China
- Hebei Engineering Laboratory of Photoelectronic Functional Crystals, Hebei University of Technology, Tianjin 300132, China
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23
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Hao Y, Kang Y, Wang S, Chen Z, Lei C, Cao X, Chen L, Li Y, Liu Z, Gong M. Electrode/Electrolyte Synergy for Concerted Promotion of Electron and Proton Transfers toward Efficient Neutral Water Oxidation. Angew Chem Int Ed Engl 2023; 62:e202303200. [PMID: 37278979 DOI: 10.1002/anie.202303200] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Revised: 06/03/2023] [Accepted: 06/06/2023] [Indexed: 06/07/2023]
Abstract
Neutral water oxidation is a crucial half-reaction for various electrochemical applications requiring pH-benign conditions. However, its sluggish kinetics with limited proton and electron transfer rates greatly impacts the overall energy efficiency. In this work, we created an electrode/electrolyte synergy strategy for simultaneously enhancing the proton and electron transfers at the interface toward highly efficient neutral water oxidation. The charge transfer was accelerated between the iridium oxide and in situ formed nickel oxyhydroxide on the electrode end. The proton transfer was expedited by the compact borate environment that originated from hierarchical fluoride/borate anions on the electrolyte end. These concerted promotions facilitated the proton-coupled electron transfer (PCET) events. Due to the electrode/electrolyte synergy, Ir-O and Ir-OO- intermediates could be directly detected by in situ Raman spectroscopy, and the rate-limiting step of Ir-O oxidation was determined. This synergy strategy can extend the scope of optimizing electrocatalytic activities toward more electrode/electrolyte combinations.
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Affiliation(s)
- Yaming Hao
- Department of Chemistry and, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, 200438, Shanghai, P. R. China
| | - Yikun Kang
- Department of Chemistry and, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, 200438, Shanghai, P. R. China
| | - Shaoyan Wang
- Department of Chemistry and, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, 200438, Shanghai, P. R. China
| | - Zhe Chen
- Department of Chemistry and, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, 200438, Shanghai, P. R. China
| | - Can Lei
- Department of Chemistry and, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, 200438, Shanghai, P. R. China
| | - Xueting Cao
- Department of Chemistry and, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, 200438, Shanghai, P. R. China
| | - Lin Chen
- Department of Chemistry and, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, 200438, Shanghai, P. R. China
| | - Yefei Li
- Department of Chemistry and, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, 200438, Shanghai, P. R. China
| | - Zhipan Liu
- Department of Chemistry and, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, 200438, Shanghai, P. R. China
| | - Ming Gong
- Department of Chemistry and, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, 200438, Shanghai, P. R. China
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24
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Raman AS, Selloni A. Acid-Base Chemistry of a Model IrO 2 Catalytic Interface. J Phys Chem Lett 2023; 14:7787-7794. [PMID: 37616464 DOI: 10.1021/acs.jpclett.3c02001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/26/2023]
Abstract
Iridium oxide (IrO2) is one of the most efficient catalytic materials for the oxygen evolution reaction (OER), yet the atomic scale structure of its aqueous interface is largely unknown. Herein, the hydration structure, proton transfer mechanisms, and acid-base properties of the rutile IrO2(110)-water interface are investigated using ab initio based deep neural-network potentials and enhanced sampling simulations. The proton affinities of the different surface sites are characterized by calculating their acid dissociation constants, which yield a point of zero charge in agreement with experiments. A large fraction (≈80%) of adsorbed water dissociation is observed, together with a short lifetime (≈0.5 ns) of the resulting terminal hydroxy groups, due to rapid proton exchanges between adsorbed H2O and adjacent OH species. This rapid surface proton transfer supports the suggestion that the rate-determining step in the OER may not involve proton transfer across the double layer into solution, as indicated by recent experiments.
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Affiliation(s)
- Abhinav S Raman
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544, United States
| | - Annabella Selloni
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544, United States
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25
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Wang Z, Qin Y, Wu T, Zhang J, Ding S, Su Y. Theoretical Study on B-doped FeN 4 Catalyst for Potential-Dependent Oxygen Reduction Reaction. Chemphyschem 2023; 24:e202300152. [PMID: 37309015 DOI: 10.1002/cphc.202300152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 06/10/2023] [Accepted: 06/12/2023] [Indexed: 06/14/2023]
Abstract
Electrochemical reactions mostly take place at a constant potential, but traditional DFT calculations operate at a neutral charge state. In order to really model experimental conditions, we developed a fixed-potential simulation framework via the iterated optimization and self-consistence of the required Fermi level. The B-doped graphene-based FeN4 sites for oxygen reduction reaction were chosen as the model to evaluate the accuracy of the fixed-potential simulation. The results demonstrate that *OH hydrogenation gets facile while O2 adsorption or hydrogenation becomes thermodynamically unfavorable due to the lower d-band center of Fe atoms in the constant potential state than the neutral charge state. The onset potential of ORR over B-doped FeN4 by performing potential-dependent simulations agree well with experimental findings. This work indicates that the fixed-potential simulation can provide a reasonable and accurate description on electrochemical reactions.
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Affiliation(s)
- Ziwei Wang
- School of Chemistry, Engineering Research Center of Energy Storage Materials and Devices of Ministry of Education, State Key Laboratory of Electrical Insulation and Power Equipment, National Innovation Platform (Center) for Industry-Education Integration of Energy Storage Technology, Xi'an Jiaotong University, Xi'an, 710049, China
| | - Yanyang Qin
- School of Chemistry, Engineering Research Center of Energy Storage Materials and Devices of Ministry of Education, State Key Laboratory of Electrical Insulation and Power Equipment, National Innovation Platform (Center) for Industry-Education Integration of Energy Storage Technology, Xi'an Jiaotong University, Xi'an, 710049, China
| | - Tiantian Wu
- School of Chemistry, Engineering Research Center of Energy Storage Materials and Devices of Ministry of Education, State Key Laboratory of Electrical Insulation and Power Equipment, National Innovation Platform (Center) for Industry-Education Integration of Energy Storage Technology, Xi'an Jiaotong University, Xi'an, 710049, China
| | - Jianrui Zhang
- School of Chemistry, Engineering Research Center of Energy Storage Materials and Devices of Ministry of Education, State Key Laboratory of Electrical Insulation and Power Equipment, National Innovation Platform (Center) for Industry-Education Integration of Energy Storage Technology, Xi'an Jiaotong University, Xi'an, 710049, China
| | - Shujiang Ding
- School of Chemistry, Engineering Research Center of Energy Storage Materials and Devices of Ministry of Education, State Key Laboratory of Electrical Insulation and Power Equipment, National Innovation Platform (Center) for Industry-Education Integration of Energy Storage Technology, Xi'an Jiaotong University, Xi'an, 710049, China
| | - Yaqiong Su
- School of Chemistry, Engineering Research Center of Energy Storage Materials and Devices of Ministry of Education, State Key Laboratory of Electrical Insulation and Power Equipment, National Innovation Platform (Center) for Industry-Education Integration of Energy Storage Technology, Xi'an Jiaotong University, Xi'an, 710049, China
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26
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Liu RT, Xu ZL, Li FM, Chen FY, Yu JY, Yan Y, Chen Y, Xia BY. Recent advances in proton exchange membrane water electrolysis. Chem Soc Rev 2023; 52:5652-5683. [PMID: 37492961 DOI: 10.1039/d2cs00681b] [Citation(s) in RCA: 25] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/27/2023]
Abstract
Proton exchange membrane water electrolyzers (PEMWEs) are an attractive technology for renewable energy conversion and storage. By using green electricity generated from renewable sources like wind or solar, high-purity hydrogen gas can be produced in PEMWE systems, which can be used in fuel cells and other industrial sectors. To date, significant advances have been achieved in improving the efficiency of PEMWEs through the design of stack components; however, challenges remain for their large-scale and long-term application due to high cost and durability issues in acidic conditions. In this review, we examine the latest developments in engineering PEMWE systems and assess the gap that still needs to be filled for their practical applications. We provide a comprehensive summary of the reaction mechanisms, the correlation among structure-composition-performance, manufacturing methods, system design strategies, and operation protocols of advanced PEMWEs. We also highlight the discrepancies between the critical parameters required for practical PEMWEs and those reported in the literature. Finally, we propose the potential solution to bridge the gap and enable the appreciable applications of PEMWEs. This review may provide valuable insights for research communities and industry practitioners working in these fields and facilitate the development of more cost-effective and durable PEMWE systems for a sustainable energy future.
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Affiliation(s)
- Rui-Ting Liu
- Department of Industrial and Systems Engineering, State Key Laboratory of Ultraprecision Machining Technology, Research Institute of Advanced Manufacturing, The Hong Kong Polytechnic University, Hung Hom, Hong Kong, China.
| | - Zheng-Long Xu
- Department of Industrial and Systems Engineering, State Key Laboratory of Ultraprecision Machining Technology, Research Institute of Advanced Manufacturing, The Hong Kong Polytechnic University, Hung Hom, Hong Kong, China.
| | - Fu-Min Li
- School of Chemistry and Chemical Engineering, State Key Laboratory of Materials Processing and Die & Mould Technology, Key Laboratory of Material Chemistry for Energy Conversion and Storage (Ministry of Education), Hubei Key Laboratory of Material Chemistry and Service Failure, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology (HUST), 1037 Luoyu Rd, Wuhan 430074, China.
| | - Fei-Yang Chen
- Department of Industrial and Systems Engineering, State Key Laboratory of Ultraprecision Machining Technology, Research Institute of Advanced Manufacturing, The Hong Kong Polytechnic University, Hung Hom, Hong Kong, China.
| | - Jing-Ya Yu
- Department of Industrial and Systems Engineering, State Key Laboratory of Ultraprecision Machining Technology, Research Institute of Advanced Manufacturing, The Hong Kong Polytechnic University, Hung Hom, Hong Kong, China.
| | - Ya Yan
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China.
| | - Yu Chen
- Key Laboratory of Macromolecular Science of Shaanxi Province, Key Laboratory of Applied Surface and Colloid Chemistry (Ministry of Education), Shaanxi Key Laboratory for Advanced Energy Devices, Shaanxi Engineering Lab for Advanced Energy Technology, School of Materials Science and Engineering, Shaanxi Normal University, Xi'an 710062, China.
| | - Bao Yu Xia
- School of Chemistry and Chemical Engineering, State Key Laboratory of Materials Processing and Die & Mould Technology, Key Laboratory of Material Chemistry for Energy Conversion and Storage (Ministry of Education), Hubei Key Laboratory of Material Chemistry and Service Failure, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology (HUST), 1037 Luoyu Rd, Wuhan 430074, China.
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27
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Wang Z, Goddard WA, Xiao H. Potential-dependent transition of reaction mechanisms for oxygen evolution on layered double hydroxides. Nat Commun 2023; 14:4228. [PMID: 37454140 DOI: 10.1038/s41467-023-40011-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Accepted: 07/08/2023] [Indexed: 07/18/2023] Open
Abstract
Oxygen evolution reaction (OER) is of crucial importance to sustainable energy and environmental engineering, and layered double hydroxides (LDHs) are among the most active catalysts for OER in alkaline conditions, but the reaction mechanism for OER on LDHs remains controversial. Distinctive types of reaction mechanisms have been proposed for the O-O coupling in OER, yet they compose a coupled reaction network with competing kinetics dependent on applied potentials. Herein, we combine grand-canonical methods and micro-kinetic modeling to unravel that the nature of dominant mechanism for OER on LDHs transitions among distinctive types as a function of applied potential, and this arises from the interplay among applied potential and competing kinetics in the coupled reaction network. The theory-predicted overpotentials, Tafel slopes, and findings are in agreement with the observations of experiments including isotope labelling. Thus, we establish a computational methodology to identify and elucidate the potential-dependent mechanisms for electrochemical reactions.
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Affiliation(s)
- Zeyu Wang
- Department of Chemistry and Key Laboratory of Organic Optoelectronics and Molecular Engineering of Ministry of Education, Tsinghua University, Beijing, 100084, China
| | - William A Goddard
- Materials and Process Simulation Center, California Institute of Technology, Pasadena, CA, 91125, USA
| | - Hai Xiao
- Department of Chemistry and Key Laboratory of Organic Optoelectronics and Molecular Engineering of Ministry of Education, Tsinghua University, Beijing, 100084, China.
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28
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Chen S, Zhang S, Guo L, Pan L, Shi C, Zhang X, Huang ZF, Yang G, Zou JJ. Reconstructed Ir‒O‒Mo species with strong Brønsted acidity for acidic water oxidation. Nat Commun 2023; 14:4127. [PMID: 37438355 DOI: 10.1038/s41467-023-39822-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Accepted: 06/30/2023] [Indexed: 07/14/2023] Open
Abstract
Surface reconstruction generates real active species in electrochemical conditions; rational regulating reconstruction in a targeted manner is the key for constructing highly active catalyst. Herein, we use the high-valence Mo modulated orthorhombic Pr3Ir1-xMoxO7 as model to activate lattice oxygen and cations, achieving directional and accelerated surface reconstruction to produce self-terminated Ir‒Obri‒Mo (Obri represents the bridge oxygen) active species that is highly active for acidic water oxidation. The doped Mo not only contributes to accelerated surface reconstruction due to optimized Ir‒O covalency and more prone dissolution of Pr, but also affords the improved durability resulted from Mo-buffered charge compensation, thereby preventing fierce Ir dissolution and excessive lattice oxygen loss. As such, Ir‒Obri‒Mo species could be directionally generated, in which the strong Brønsted acidity of Obri induced by remaining Mo assists with the facilitated deprotonation of oxo intermediates, following bridging-oxygen-assisted deprotonation pathway. Consequently, the optimal catalyst exhibits the best activity with an overpotential of 259 mV to reach 10 mA cmgeo-2, 50 mV lower than undoped counterpart, and shows improved stability for over 200 h. This work provides a strategy of directional surface reconstruction to constructing strong Brønsted acid sites in IrOx species, demonstrating the perspective of targeted electrocatalyst fabrication under in situ realistic reaction conditions.
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Affiliation(s)
- Shiyi Chen
- Key Laboratory for Green Chemical Technology of the Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, 300072, Tianjin, China
- Collaborative Innovative Centre of Chemical Science and Engineering (Tianjin), 300072, Tianjin, China
| | - Shishi Zhang
- Key Laboratory for Green Chemical Technology of the Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, 300072, Tianjin, China
- Collaborative Innovative Centre of Chemical Science and Engineering (Tianjin), 300072, Tianjin, China
| | - Lei Guo
- Key Laboratory for Green Chemical Technology of the Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, 300072, Tianjin, China
- Collaborative Innovative Centre of Chemical Science and Engineering (Tianjin), 300072, Tianjin, China
| | - Lun Pan
- Key Laboratory for Green Chemical Technology of the Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, 300072, Tianjin, China
- Collaborative Innovative Centre of Chemical Science and Engineering (Tianjin), 300072, Tianjin, China
- Haihe Laboratory of Sustainable Chemical Transformations, 300192, Tianjin, China
| | - Chengxiang Shi
- Key Laboratory for Green Chemical Technology of the Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, 300072, Tianjin, China
- Collaborative Innovative Centre of Chemical Science and Engineering (Tianjin), 300072, Tianjin, China
- Haihe Laboratory of Sustainable Chemical Transformations, 300192, Tianjin, China
| | - Xiangwen Zhang
- Key Laboratory for Green Chemical Technology of the Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, 300072, Tianjin, China
- Collaborative Innovative Centre of Chemical Science and Engineering (Tianjin), 300072, Tianjin, China
- Haihe Laboratory of Sustainable Chemical Transformations, 300192, Tianjin, China
| | - Zhen-Feng Huang
- Key Laboratory for Green Chemical Technology of the Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, 300072, Tianjin, China.
- Collaborative Innovative Centre of Chemical Science and Engineering (Tianjin), 300072, Tianjin, China.
- Haihe Laboratory of Sustainable Chemical Transformations, 300192, Tianjin, China.
| | - Guidong Yang
- XJTU-Oxford International Joint Laboratory for Catalysis, School of Chemical Engineering and Technology, Xi'an Jiaotong University, Xi'an, Shaanxi, China.
| | - Ji-Jun Zou
- Key Laboratory for Green Chemical Technology of the Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, 300072, Tianjin, China.
- Collaborative Innovative Centre of Chemical Science and Engineering (Tianjin), 300072, Tianjin, China.
- Haihe Laboratory of Sustainable Chemical Transformations, 300192, Tianjin, China.
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29
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Exner KS. On the mechanistic complexity of oxygen evolution: potential-dependent switching of the mechanism at the volcano apex. MATERIALS HORIZONS 2023; 10:2086-2095. [PMID: 36928519 DOI: 10.1039/d3mh00047h] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The anodic four-electron oxygen evolution reaction (OER) corresponds to the limiting process in acidic or alkaline electrolyzers to produce gaseous hydrogen at the cathode of the device. In the last decade, tremendous efforts have been dedicated to the identification of active OER materials by electronic structure calculations in the density functional theory approximation. Most of these works rely on the assumption that the mononuclear mechanism, comprising the *OH, *O, and *OOH intermediates, is operative under OER conditions, and that a single elementary reaction step (most likely *OOH formation) governs the kinetics. In the present manuscript, six different OER mechanisms are analyzed, and potential-dependent volcano curves are constructed to comprehend the electrocatalytic activity of these pathways in the approximation of the descriptor Gmax(U), a potential-dependent activity measure based on the notion of the free-energy span model. While the mononuclear description mainly describes the legs of the volcano plot, corresponding to electrocatalysts with low intrinsic activity, it is demonstrated that the preferred pathway at the volcano apex is a strong function of the applied electrode potential. The observed mechanistic complexity including a switch of the favored pathway with increasing overpotential sets previous investigations aiming at the identification of reaction mechanisms and limiting steps into question since the entire breadth of OER pathways was not accounted for. A prerequisite for future atomic-scale studies on highly active OER catalysts refers to the evaluation of several mechanistic pathways so that neither important mechanistic features are overlooked nor limiting steps are incorrectly determined.
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Affiliation(s)
- Kai S Exner
- University Duisburg-Essen, Faculty of Chemistry, Theoretical Inorganic Chemistry, Universitätsstraße 5, 45141 Essen, Germany.
- Cluster of Excellence RESOLV, 44801 Bochum, Germany
- Center for Nanointegration (CENIDE) Duisburg-Essen, 47057 Duisburg, Germany
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30
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Binninger T, Heinritz A, Mohamed R. Ideal gas reference for association/dissociation reactions: Concentration bias and kinetic reference voltage/potentials in electrolysis. J Chem Phys 2023; 158:124129. [PMID: 37003768 DOI: 10.1063/5.0118467] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023] Open
Abstract
The water electrolysis reaction involves a large kinetic overvoltage, and considerable research efforts are currently devoted to the search for better electrocatalysts. It is commonly expected that, at least, in principle, an ideal electrocatalyst would enable significant reaction rates close to the equilibrium voltage. In the present work, we question this expectation. For reactions, such as water electrolysis, which involve a significant change in the concentration between the reactant and product states, the position of the equilibrium voltage generally becomes decoupled from the onset of macroscopic kinetic currents. The reason is the dependence of the equilibrium voltage on the concentrations of both reactant and product species, whereas the forward rate of the reaction does not, in general, depend on the latter. Based on a new ideal gas reference for association/dissociation reactions, we develop a formalism to decompose the equilibrium voltage of electrolysis reactions into two distinct contributions: first, a contribution due to unbalanced relative concentrations between reactants and products second, a contribution due to the (mis)alignment of reactant and product states within the potential energy surface. The latter defines an intrinsic "kinetic reference voltage" that agrees remarkably well with the experimentally observed onset of water electrolysis, providing a new perspective on the origin of a significant fraction of the respective overvoltage. We expect the concept of kinetic reference voltages/potentials to be also useful in the context of other reactions involving significant concentration changes from the reactant to the product.
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Affiliation(s)
| | - Adrian Heinritz
- Electrochemistry Laboratory, Paul Scherrer Institut, 5232 Villigen, Switzerland
| | - Rhiyaad Mohamed
- HySA/Catalysis Centre of Competence, Catalysis Institute, Department of Chemical Engineering, University of Cape Town, 7701 Rondebosch, South Africa
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31
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Grand Canonical Quantum Mechanics with Applications to Mechanisms and Rates for Electrocatalysis. Top Catal 2023. [DOI: 10.1007/s11244-023-01794-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/17/2023]
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32
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Hu C, Xu J, Tan Y, Huang X. Recent advances of ruthenium-based electrocatalysts for hydrogen energy. TRENDS IN CHEMISTRY 2023. [DOI: 10.1016/j.trechm.2023.01.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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33
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Mao X, Wang L, Li Y. Machine-Learning-Assisted Discovery of High-Efficient Oxygen Evolution Electrocatalysts. J Phys Chem Lett 2023; 14:170-177. [PMID: 36579956 DOI: 10.1021/acs.jpclett.2c02873] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Iridium oxide (IrO2) is the predominant electrocatalyst for the oxygen evolution reaction (OER), but its low efficiency and high cost limit its applications. In this work, we have developed a strategy by combination of high-throughput density functional theory (DFT) and machine learning (ML) techniques for material discovery on IrO2-based electrocatalysts with enhanced OER activity. A total of 36 kinds of metal dopants are considered to substitute for Ir to form binary and ternary metal oxides, and the most stable surface structures are selected from a total of 4648 structures for OER activity evaluation. Utilizing the neural network language model (NNLM), we associate the atomic environment with the formation energies of crystals and free energies of OER intermediates, and finally a series of potential candidates have been screened as the superior OER catalysts. Our strategy could efficiently explore promising electrocatalysts, especially for evaluating complex multi-metallic compounds.
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Affiliation(s)
- Xinnan Mao
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou, Jiangsu215123, People's Republic of China
| | - Lu Wang
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou, Jiangsu215123, People's Republic of China
| | - Youyong Li
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou, Jiangsu215123, People's Republic of China
- Macao Institute of Materials Science and Engineering, Macau University of Science and Technology, Taipa, Macau999078, People's Republic of China
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34
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Gao J, Liu Y, Liu B, Huang KW. Progress of Heterogeneous Iridium-Based Water Oxidation Catalysts. ACS NANO 2022; 16:17761-17777. [PMID: 36355040 DOI: 10.1021/acsnano.2c08519] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
The water oxidation reaction (or oxygen evolution reaction, OER) plays a critical role in green hydrogen production via water splitting, electrochemical CO2 reduction, and nitrogen fixation. The four-electron and four-proton transfer OER process involves multiple reaction intermediates and elementary steps that lead to sluggish kinetics; therefore, a high overpotential is necessary to drive the reaction. Among the different water-splitting electrolyzers, the proton exchange membrane type electrolyzer has greater advantages, but its anode catalysts are limited to iridium-based materials. The iridium catalyst has been extensively studied in recent years due to its balanced activity and stability for acidic OER, and many exciting signs of progress have been made. In this review, the surface and bulk Pourbaix diagrams of iridium species in an aqueous solution are introduced. The iridium-based catalysts, including metallic or oxides, amorphous or crystalline, single crystals, atomically dispersed or nanostructured, and iridium compounds for OER, are then elaborated. The latest progress of active sites, reaction intermediates, reaction kinetics, and elementary steps is summarized. Finally, future research directions regarding iridium catalysts for acidic OER are discussed.
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Affiliation(s)
- Jiajian Gao
- Agency for Science, Technology, and Research, Institute of Sustainability for Chemicals, Energy and Environment, 1 Pesek Road, Jurong Island, Singapore627833
| | - Yan Liu
- Agency for Science, Technology, and Research, Institute of Sustainability for Chemicals, Energy and Environment, 1 Pesek Road, Jurong Island, Singapore627833
| | - Bin Liu
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore637459
| | - Kuo-Wei Huang
- Agency for Science, Technology, and Research, Institute of Sustainability for Chemicals, Energy and Environment, 1 Pesek Road, Jurong Island, Singapore627833
- KAUST Catalysis Center and Division of Science and Engineering, King Abdullah University of Science and Technology, Thuwal23955-6900, Saudi Arabia
- Agency for Science, Technology, and Research, Institute of Materials Research and Engineering, Singapore138634
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35
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Munarriz J, Zhang Z, Sautet P, Alexandrova AN. Graphite-Supported Pt n Cluster Electrocatalysts: Major Change of Active Sites as a Function of the Applied Potential. ACS Catal 2022. [DOI: 10.1021/acscatal.2c04643] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- Julen Munarriz
- Department of Chemistry and Biochemistry, University of California, Los Angeles, 607 Charles E. Young Drive, Los Angeles, California 90095-1569, United States
- Departamento de Química Física y Analítica, Universidad de Oviedo, Julián Clavería no. 8, Campus Universitario de El Cristo, Oviedo, 33006 Spain
| | - Zisheng Zhang
- Department of Chemistry and Biochemistry, University of California, Los Angeles, 607 Charles E. Young Drive, Los Angeles, California 90095-1569, United States
| | - Philippe Sautet
- Department of Chemistry and Biochemistry, University of California, Los Angeles, 607 Charles E. Young Drive, Los Angeles, California 90095-1569, United States
- California NanoSystem Institute, University of California, Los Angeles, 607 Charles E. Young Drive, Los Angeles, California 90095-1569, United States
- Department of Chemical and Biomolecular Engineering, University of California, Los Angeles, 5531 Boelter Hall, Los Angeles, California 90095, United States
| | - Anastassia N. Alexandrova
- Department of Chemistry and Biochemistry, University of California, Los Angeles, 607 Charles E. Young Drive, Los Angeles, California 90095-1569, United States
- California NanoSystem Institute, University of California, Los Angeles, 607 Charles E. Young Drive, Los Angeles, California 90095-1569, United States
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36
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He J, Fu G, Zhang J, Xu P, Sun J. Multistage Electron Distribution Engineering of Iridium Oxide by Codoping W and Sn for Enhanced Acidic Water Oxidation Electrocatalysis. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2203365. [PMID: 36089667 DOI: 10.1002/smll.202203365] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Revised: 07/26/2022] [Indexed: 06/15/2023]
Abstract
Developing efficient and robust anodic electrocatalysts to implement the proton-exchange membrane (PEM) electrolyzer is critical for hydrogen generation. Nevertheless, the only known applicable anode catalyst IrOx in PEM electrolyzers still requires high overpotential due to the weak binding energy between oxygen intermediates and active sites, limiting its wide applications. Herein, a ternary Ir0.7 W0.2 Sn0.1 Ox nanocatalyst synthesized through a sol-gel strategy, exhibits a low overpotential of 236 mV (10 mA cm-2 geo ) for thoxygen evolution reaction (OER), accompanied with robust durability over 220 h at 1 A cm-2 geo in 0.5 m H2 SO4 . Moreover, the optimized Ir0.7 W0.2 Sn0.1 Ox delivers a prominent mass activity of 722.7 A g-1 Ir at 1.53 V (vs RHE), which is around 34 times higher compared with that of IrOx . The mircrostructural analyses reveal that codoping of W and Sn stabilizes Ir with a valence state lower than 4+ through multistage charge redistribution, avoiding the overoxidation of Ir above 1.6 V versus RHE and enhancing the acidic OER performance. Additionally, density functional theory calculations reveal that codoping of W and Sn moves the d band center of Ir to the Fermi level, thus enhancing the binding energies of oxygen intermediates with Ir sites and decreasing the energy barrier toward acidic OER.
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Affiliation(s)
- Jing He
- State Key Laboratory of Urban Water Resource and Environment, MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, 150080, China
| | - Gang Fu
- State Key Laboratory of Urban Water Resource and Environment, MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, 150080, China
| | - Jiaxu Zhang
- State Key Laboratory of Urban Water Resource and Environment, MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, 150080, China
| | - Ping Xu
- State Key Laboratory of Urban Water Resource and Environment, MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, 150080, China
| | - Jianmin Sun
- State Key Laboratory of Urban Water Resource and Environment, MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, 150080, China
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37
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Geppert J, Röse P, Pauer S, Krewer U. Microkinetic Barriers of the Oxygen Evolution on the Oxides of Iridium, Ruthenium and their Binary Mixtures. ChemElectroChem 2022. [DOI: 10.1002/celc.202200481] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Janis Geppert
- Karlsruhe Institute of Technology: Karlsruher Institut fur Technologie Institute for Applied Matierals - Electrochemical Technologies Adenauerring 20b 76131 Karlsruhe GERMANY
| | - Philipp Röse
- Karlsruher Institut für Technologie: Karlsruher Institut fur Technologie Institute for Applied Materials - Electrochemical Technologies Adenauerring 20b 76131 Karlsruhe GERMANY
| | - Swantje Pauer
- Karlsruher Institut für Technologie: Karlsruher Institut fur Technologie Institute for Applied Materials - Electrochemical Technologies Adenauerring 20b 76131 Karlsruhe GERMANY
| | - Ulrike Krewer
- Institute for Applied Materials - Materials for Electrical and Electronic Engineering Electrical Engineering and Information Technology Adenauerring 20b 76131 Karlsruhe GERMANY
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38
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Geppert J, Röse P, Czioska S, Escalera-López D, Boubnov A, Saraçi E, Cherevko S, Grunwaldt JD, Krewer U. Microkinetic Analysis of the Oxygen Evolution Performance at Different Stages of Iridium Oxide Degradation. J Am Chem Soc 2022; 144:13205-13217. [PMID: 35850525 PMCID: PMC9335572 DOI: 10.1021/jacs.2c03561] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
![]()
The microkinetics
of the electrocatalytic oxygen evolution reaction
substantially determines the performance in proton-exchange membrane
water electrolysis. State-of-the-art nanoparticulated rutile IrO2 electrocatalysts present an excellent trade-off between activity
and stability due to the efficient formation of intermediate surface
species. To reveal and analyze the interaction of individual surface
processes, a detailed dynamic microkinetic model approach is established
and validated using cyclic voltammetry. We show that the interaction
of three different processes, which are the adsorption of water, one
potential-driven deprotonation step, and the detachment of oxygen,
limits the overall reaction turnover. During the reaction, the active
IrO2 surface is covered mainly by *O, *OOH, and *OO adsorbed
species with a share dependent on the applied potential and of 44,
28, and 20% at an overpotential of 350 mV, respectively. In contrast
to state-of-the-art calculations of ideal catalyst surfaces, this
novel model-based methodology allows for experimental identification
of the microkinetics as well as thermodynamic energy values of real
pristine and degraded nanoparticles. We show that the loss in electrocatalytic
activity during degradation is correlated to an increase in the activation
energy of deprotonation processes, whereas reaction energies were
marginally affected. As the effect of electrolyte-related parameters
does not cause such a decrease, the model-based analysis demonstrates
that material changes trigger the performance loss. These insights
into the degradation of IrO2 and its effect on the surface
processes provide the basis for a deeper understanding of degrading
active sites for the optimization of the oxygen evolution performance.
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Affiliation(s)
- Janis Geppert
- Institute for Applied Materials-Electrochemical Technologies (IAM-ET), Karlsruhe Institute of Technology, Adenauerring 20b, Karlsruhe 76131, Germany
| | - Philipp Röse
- Institute for Applied Materials-Electrochemical Technologies (IAM-ET), Karlsruhe Institute of Technology, Adenauerring 20b, Karlsruhe 76131, Germany
| | - Steffen Czioska
- Institute for Chemical Technology and Polymer Chemistry (ITCP), Karlsruhe Institute of Technology, Engesserstr. 20, Karlsruhe 76131, Germany
| | - Daniel Escalera-López
- Helmholtz-Institute Erlangen-Nürnberg for Renewable Energy (IEK-11), Forschungszentrum Jülich GmbH, Cauerstr. 1, Erlangen 91058, Germany
| | - Alexey Boubnov
- Institute for Chemical Technology and Polymer Chemistry (ITCP), Karlsruhe Institute of Technology, Engesserstr. 20, Karlsruhe 76131, Germany.,Institute of Catalysis Reasearch and Technology (IKFT), Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, Eggenstein-Leopoldshafen 76344, Germany
| | - Erisa Saraçi
- Institute for Chemical Technology and Polymer Chemistry (ITCP), Karlsruhe Institute of Technology, Engesserstr. 20, Karlsruhe 76131, Germany.,Institute of Catalysis Reasearch and Technology (IKFT), Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, Eggenstein-Leopoldshafen 76344, Germany
| | - Serhiy Cherevko
- Helmholtz-Institute Erlangen-Nürnberg for Renewable Energy (IEK-11), Forschungszentrum Jülich GmbH, Cauerstr. 1, Erlangen 91058, Germany
| | - Jan-Dierk Grunwaldt
- Institute for Chemical Technology and Polymer Chemistry (ITCP), Karlsruhe Institute of Technology, Engesserstr. 20, Karlsruhe 76131, Germany.,Institute of Catalysis Reasearch and Technology (IKFT), Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, Eggenstein-Leopoldshafen 76344, Germany
| | - Ulrike Krewer
- Institute for Applied Materials-Electrochemical Technologies (IAM-ET), Karlsruhe Institute of Technology, Adenauerring 20b, Karlsruhe 76131, Germany
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39
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Binninger T, Doublet ML. The Ir-OOOO-Ir transition state and the mechanism of the oxygen evolution reaction on IrO 2(110). ENERGY & ENVIRONMENTAL SCIENCE 2022; 15:2519-2528. [PMID: 36204599 PMCID: PMC9450941 DOI: 10.1039/d2ee00158f] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Accepted: 05/04/2022] [Indexed: 05/14/2023]
Abstract
Carefully assessing the energetics along the pathway of the oxygen evolution reaction (OER), our computational study reveals that the "classical" OER mechanism on the (110) surface of iridium dioxide (IrO2) must be reconsidered. We find that the OER follows a bi-nuclear mechanism with adjacent top surface oxygen atoms as fixed adsorption sites, whereas the iridium atoms underneath play an indirect role and maintain their saturated 6-fold oxygen coordination at all stages of the reaction. The oxygen molecule is formed, via an Ir-OOOO-Ir transition state, by association of the outer oxygen atoms of two adjacent Ir-OO surface entities, leaving two intact Ir-O entities at the surface behind. This is drastically different from the commonly considered mono-nuclear mechanism where the O2 molecule evolves by splitting of the Ir-O bond in an Ir-OO entity. We regard the rather weak reducibility of crystalline IrO2 as the reason for favoring the novel pathway, which allows the Ir-O bonds to remain stable and explains the outstanding stability of IrO2 under OER conditions. The establishment of surface oxygen atoms as fixed electrocatalytically active sites on a transition-metal oxide represents a paradigm shift for the understanding of water oxidation electrocatalysis, and it reconciles the theoretical understanding of the OER mechanism on iridium oxide with recently reported experimental results from operando X-ray spectroscopy. The novel mechanism provides an efficient OER pathway on a weakly reducible oxide, defining a new strategy towards the design of advanced OER catalysts with combined activity and stability.
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40
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Metal Coordination Determines the Catalytic Activity of IrO2 Nanoparticles for the Oxygen Evolution Reaction. J Catal 2022. [DOI: 10.1016/j.jcat.2022.05.023] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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41
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Wang X, Niu H, Wan X, Zhang Z, Wang FR, Guo Y. Strain-promoted conductive metal-benzenhexathiolate frameworks for overall water splitting. J Colloid Interface Sci 2022; 624:160-167. [PMID: 35660885 DOI: 10.1016/j.jcis.2022.05.127] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Revised: 05/18/2022] [Accepted: 05/21/2022] [Indexed: 12/19/2022]
Abstract
Designing efficient catalysts for hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) is a desirable strategy for overall water splitting and the generation of clean and renewable energies. Herein, the electrocatalytic HER and OER activity of the conductive metal-benzenhexathiolate (M-BHT) frameworks has been evaluated utilizing first-principles calculations. The in-plane π-d conjugation of M-BHT guarantees fast electron transfer during electrocatalytic reactions. Notably, Rh-BHT holds the promise of bifunctional HER/OER activity with the overpotentials of 0.07/0.36 V. Furthermore, the application of strain engineering tailors the adsorption of intermediates and promotes the overall water splitting performance. Rh-BHT with the +1% tensile strain shows the HER/OER overpotential of 0.02/0.37 V. This work not only demonstrates the prospects of conductive metal-organic frameworks in electrocatalysis but also offers new insights into designing efficient catalysts by strain engineering.
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Affiliation(s)
- Xiting Wang
- School of Electrical Engineering and Automation, Wuhan University, Wuhan 430072, Hubei, China
| | - Huan Niu
- School of Electrical Engineering and Automation, Wuhan University, Wuhan 430072, Hubei, China
| | - Xuhao Wan
- School of Electrical Engineering and Automation, Wuhan University, Wuhan 430072, Hubei, China
| | - Zhaofu Zhang
- Department of Engineering, University of Cambridge, Cambridge CB2 1PZ, United Kingdom
| | - Feng Ryan Wang
- Departments of Chemical Engineering, University College London, Torrington Place, London WC1E 7JE, United Kingdom
| | - Yuzheng Guo
- School of Electrical Engineering and Automation, Wuhan University, Wuhan 430072, Hubei, China.
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42
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Scott SB, Rao RR, Moon C, Sørensen JE, Kibsgaard J, Shao-Horn Y, Chorkendorff I. The low overpotential regime of acidic water oxidation part I: the importance of O 2 detection. ENERGY & ENVIRONMENTAL SCIENCE 2022; 15:1977-1987. [PMID: 35706423 PMCID: PMC9116083 DOI: 10.1039/d1ee03914h] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Accepted: 03/18/2022] [Indexed: 05/20/2023]
Abstract
The high overpotential required for the oxygen evolution reaction (OER) represents a significant barrier for the production of closed-cycle renewable fuels and chemicals. Ruthenium dioxide is among the most active catalysts for OER in acid, but the activity at low overpotentials can be difficult to measure due to high capacitance. In this work, we use electrochemistry - mass spectrometry to obtain accurate OER activity measurements spanning six orders of magnitude on a model series of ruthenium-based catalysts in acidic electrolyte, quantifying electrocatalytic O2 production at potential as low as 1.30 VRHE. We show that the potential-dependent O2 production rate, i.e., the Tafel slope, exhibits three regimes, revealing a previously unobserved Tafel slope of 25 mV decade-1 below 1.4 VRHE. We fit the expanded activity data to a microkinetic model based on potential-dependent coverage of the surface intermediates from which the rate-determining step takes place. Our results demonstrate how the familiar quantities "onset potential" and "exchange current density" are influenced by the sensitivity of the detection method.
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Affiliation(s)
- Soren B Scott
- SurfCat Section for Surface Physics and Catalysis, Department of Physics, Technical University of Denmark Kgs. Lyngby Denmark
| | - Reshma R Rao
- Department of Mechanical Engineering, Massachusetts Institute of Technology Cambridge Massachusetts USA
| | - Choongman Moon
- SurfCat Section for Surface Physics and Catalysis, Department of Physics, Technical University of Denmark Kgs. Lyngby Denmark
| | - Jakob E Sørensen
- SurfCat Section for Surface Physics and Catalysis, Department of Physics, Technical University of Denmark Kgs. Lyngby Denmark
| | - Jakob Kibsgaard
- SurfCat Section for Surface Physics and Catalysis, Department of Physics, Technical University of Denmark Kgs. Lyngby Denmark
| | - Yang Shao-Horn
- Department of Mechanical Engineering, Massachusetts Institute of Technology Cambridge Massachusetts USA
| | - Ib Chorkendorff
- SurfCat Section for Surface Physics and Catalysis, Department of Physics, Technical University of Denmark Kgs. Lyngby Denmark
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43
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Rao RR, Corby S, Bucci A, García-Tecedor M, Mesa CA, Rossmeisl J, Giménez S, Lloret-Fillol J, Stephens IEL, Durrant JR. Spectroelectrochemical Analysis of the Water Oxidation Mechanism on Doped Nickel Oxides. J Am Chem Soc 2022; 144:7622-7633. [PMID: 35442661 PMCID: PMC9073940 DOI: 10.1021/jacs.1c08152] [Citation(s) in RCA: 38] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
![]()
Metal oxides and
oxyhydroxides exhibit state-of-the-art activity
for the oxygen evolution reaction (OER); however, their reaction mechanism,
particularly the relationship between charging of the oxide and OER
kinetics, remains elusive. Here, we investigate a series of Mn-, Co-,
Fe-, and Zn-doped nickel oxides using operando UV–vis
spectroscopy coupled with time-resolved stepped potential spectroelectrochemistry.
The Ni2+/Ni3+ redox peak potential is found
to shift anodically from Mn- < Co- < Fe- < Zn-doped samples,
suggesting a decrease in oxygen binding energetics from Mn- to Zn-doped
samples. At OER-relevant potentials, using optical absorption spectroscopy,
we quantitatively detect the subsequent oxidation of these redox centers.
The OER kinetics was found to have a second-order dependence on the
density of these oxidized species, suggesting a chemical rate-determining
step involving coupling of two oxo species. The intrinsic turnover
frequency per oxidized species exhibits a volcano trend with the binding
energy of oxygen on the Ni site, having a maximum activity of ∼0.05
s–1 at 300 mV overpotential for the Fe-doped sample.
Consequently, we propose that for Ni centers that bind oxygen too
strongly (Mn- and Co-doped oxides), OER kinetics is limited by O–O
coupling and oxygen desorption, while for Ni centers that bind oxygen
too weakly (Zn-doped oxides), OER kinetics is limited by the formation
of oxo groups. This study not only experimentally demonstrates the
relation between electroadsorption free energy and intrinsic kinetics
for OER on this class of materials but also highlights the critical
role of oxidized species in facilitating OER kinetics.
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Affiliation(s)
- Reshma R Rao
- Department of Chemistry, Centre for Processable Electronics, Imperial College London, London W12 0BZ, U.K
| | - Sacha Corby
- Department of Chemistry, Centre for Processable Electronics, Imperial College London, London W12 0BZ, U.K
| | - Alberto Bucci
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology, Avinguda Països Catalans 16, 43007 Tarragona, Spain
| | - Miguel García-Tecedor
- Institute of Advanced Materials (INAM), University Jaume I, 12071 Castello de la Plana, Spain
| | - Camilo A Mesa
- Institute of Advanced Materials (INAM), University Jaume I, 12071 Castello de la Plana, Spain
| | - Jan Rossmeisl
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, Copenhagen DK-2100, Denmark
| | - Sixto Giménez
- Institute of Advanced Materials (INAM), University Jaume I, 12071 Castello de la Plana, Spain
| | - Julio Lloret-Fillol
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology, Avinguda Països Catalans 16, 43007 Tarragona, Spain
| | - Ifan E L Stephens
- Department of Materials, Royal School of Mines, Imperial College London, South Kensington Campus, London SW7 2AZ, U.K
| | - James R Durrant
- Department of Chemistry, Centre for Processable Electronics, Imperial College London, London W12 0BZ, U.K
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44
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Samanta B, Morales-García Á, Illas F, Goga N, Anta JA, Calero S, Bieberle-Hütter A, Libisch F, Muñoz-García AB, Pavone M, Caspary Toroker M. Challenges of modeling nanostructured materials for photocatalytic water splitting. Chem Soc Rev 2022; 51:3794-3818. [PMID: 35439803 DOI: 10.1039/d1cs00648g] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Understanding the water splitting mechanism in photocatalysis is a rewarding goal as it will allow producing clean fuel for a sustainable life in the future. However, identifying the photocatalytic mechanisms by modeling photoactive nanoparticles requires sophisticated computational techniques based on multiscale modeling. In this review, we will survey the strengths and drawbacks of currently available theoretical methods at different length and accuracy scales. Understanding the surface-active site through Density Functional Theory (DFT) using new, more accurate exchange-correlation functionals plays a key role for surface engineering. Larger scale dynamics of the catalyst/electrolyte interface can be treated with Molecular Dynamics albeit there is a need for more generalizations of force fields. Monte Carlo and Continuum Modeling techniques are so far not the prominent path for modeling water splitting but interest is growing due to the lower computational cost and the feasibility to compare the modeling outcome directly to experimental data. The future challenges in modeling complex nano-photocatalysts involve combining different methods in a hierarchical way so that resources are spent wisely at each length scale, as well as accounting for excited states chemistry that is important for photocatalysis, a path that will bring devices closer to the theoretical limit of photocatalytic efficiency.
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Affiliation(s)
- Bipasa Samanta
- Department of Materials Science and Engineering, Technion - Israel Institute of Technology, Haifa 3600003, Israel
| | - Ángel Morales-García
- Departament de Ciència de Materials i Química Física & Institut de Química Teòrica i Computacional (IQTCUB), Universitat de Barcelona, c/Martí i Franquès 1-11, 08028 Barcelona, Spain.
| | - Francesc Illas
- Departament de Ciència de Materials i Química Física & Institut de Química Teòrica i Computacional (IQTCUB), Universitat de Barcelona, c/Martí i Franquès 1-11, 08028 Barcelona, Spain.
| | - Nicolae Goga
- Faculty of Engineering in Foreign Languages, Universitatea Politehnica din Bucuresti, Bucuresti, Romania.
| | - Juan Antonio Anta
- Department of Physical, Chemical and Natural Systems, Universidad Pablo de Olavide, Crta. De Utrera km. 1, 41089 Sevilla, Spain.
| | - Sofia Calero
- Materials Simulation & Modeling, Department of Applied Physics, Eindhoven University of Technology, 5600 MB Eindhoven, The Netherlands
| | - Anja Bieberle-Hütter
- Electrochemical Materials and Interfaces, Dutch Institute for Fundamental Energy Research (DIFFER), 5600 HH Eindhoven, The Netherlands.
| | - Florian Libisch
- Institute for Theoretical Physics, TU Wien, 1040 Vienna, Austria.
| | - Ana B Muñoz-García
- Dipartimento di Fisica "Ettore Pancini", Università di Napoli Federico II, Via Cintia 21, Napoli 80126, Italy.
| | - Michele Pavone
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Via Cintia 21, Napoli 80126, Italy.
| | - Maytal Caspary Toroker
- Department of Materials Science and Engineering, Technion - Israel Institute of Technology, Haifa 3600003, Israel.,The Nancy and Stephen Grand Technion Energy Program, Technion - Israel Institute of Technology, Haifa 3600003, Israel.
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Lončar A, Escalera‐López D, Cherevko S, Hodnik N. Inter-relationships between Oxygen Evolution and Iridium Dissolution Mechanisms. Angew Chem Int Ed Engl 2022; 61:e202114437. [PMID: 34942052 PMCID: PMC9305877 DOI: 10.1002/anie.202114437] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Indexed: 11/08/2022]
Abstract
The widespread utilization of proton exchange membrane (PEM) electrolyzers currently remains uncertain, as they rely on the use of highly scarce iridium as the only viable catalyst for the oxygen evolution reaction (OER), which is known to present the major energy losses of the process. Understanding the mechanistic origin of the different activities and stabilities of Ir-based catalysts is, therefore, crucial for a scale-up of green hydrogen production. It is known that structure influences the dissolution, which is the main degradation mechanism and shares common intermediates with the OER. In this Minireview, the state-of-the-art understanding of dissolution and its relationship with the structure of different iridium catalysts is gathered and correlated to different mechanisms of the OER. A perspective on future directions of investigation is also given.
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Affiliation(s)
- Anja Lončar
- Laboratory for ElectrocatalysisDepartment of Materials ChemistryNational Institute of ChemistryHajdrihova 191000LjubljanaSlovenia
- University of Nova GoricaVipavska 135000Nova GoricaSlovenia
| | - Daniel Escalera‐López
- Helmholtz-Institute Erlangen-Nürnberg for Renewable EnergyForschungszentrum JülichCauerstrasse 191058ErlangenGermany
| | - Serhiy Cherevko
- Helmholtz-Institute Erlangen-Nürnberg for Renewable EnergyForschungszentrum JülichCauerstrasse 191058ErlangenGermany
| | - Nejc Hodnik
- Laboratory for ElectrocatalysisDepartment of Materials ChemistryNational Institute of ChemistryHajdrihova 191000LjubljanaSlovenia
- University of Nova GoricaVipavska 135000Nova GoricaSlovenia
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Hagopian A, Doublet ML, Filhol JS, Binninger T. Advancement of the Homogeneous Background Method for the Computational Simulation of Electrochemical Interfaces. J Chem Theory Comput 2022; 18:1883-1893. [PMID: 35170945 DOI: 10.1021/acs.jctc.1c01237] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Computational studies of electrochemical interfaces based on density-functional theory (DFT) play an increasingly important role in the present research on electrochemical processes for energy conversion and storage. The homogeneous background method (HBM) offers a straightforward approach to charge the electrochemical system within DFT simulations, but it typically requires the specification of the active fraction of excess electrons based on a certain choice of the electrode-electrolyte boundary location, which can be difficult in the presence of electrode-surface adsorbates or explicit solvent molecules. In this work, we present a methodological advancement of the HBM, both facilitating and extending its applicability. The advanced version requires neither energy corrections nor the specification of the active fraction of excess electrons, providing a versatile and readily available method for the simulation of charged interfaces when adsorbates or explicit solvent molecules are present. Our computational DFT results for Pt(111), Au(111), and Li(100) metal electrodes in high-dielectric-constant solvents demonstrate an excellent agreement in the interfacial charging characteristics obtained from simulations with the advanced HBM in comparison with the (linearized) Poisson-Boltzmann model (PBM).
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Affiliation(s)
- Arthur Hagopian
- ICGM, Univ Montpellier, CNRS, ENSCM, 34293 Montpellier, France.,Réseau sur le Stockage Electrochimique de l'Energie (RS2E), FR CNRS 3459, Hub de l'Energie, 80039 Amiens, France
| | - Marie-Liesse Doublet
- ICGM, Univ Montpellier, CNRS, ENSCM, 34293 Montpellier, France.,Réseau sur le Stockage Electrochimique de l'Energie (RS2E), FR CNRS 3459, Hub de l'Energie, 80039 Amiens, France
| | - Jean-Sébastien Filhol
- ICGM, Univ Montpellier, CNRS, ENSCM, 34293 Montpellier, France.,Réseau sur le Stockage Electrochimique de l'Energie (RS2E), FR CNRS 3459, Hub de l'Energie, 80039 Amiens, France
| | - Tobias Binninger
- ICGM, Univ Montpellier, CNRS, ENSCM, 34293 Montpellier, France.,Réseau sur le Stockage Electrochimique de l'Energie (RS2E), FR CNRS 3459, Hub de l'Energie, 80039 Amiens, France
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Lončar A, Escalera‐López D, Cherevko S, Hodnik N. Inter‐relationships between Oxygen Evolution and Iridium Dissolution Mechanisms. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202114437] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Anja Lončar
- Laboratory for Electrocatalysis Department of Materials Chemistry National Institute of Chemistry Hajdrihova 19 1000 Ljubljana Slovenia
- University of Nova Gorica Vipavska 13 5000 Nova Gorica Slovenia
| | - Daniel Escalera‐López
- Helmholtz-Institute Erlangen-Nürnberg for Renewable Energy Forschungszentrum Jülich Cauerstrasse 1 91058 Erlangen Germany
| | - Serhiy Cherevko
- Helmholtz-Institute Erlangen-Nürnberg for Renewable Energy Forschungszentrum Jülich Cauerstrasse 1 91058 Erlangen Germany
| | - Nejc Hodnik
- Laboratory for Electrocatalysis Department of Materials Chemistry National Institute of Chemistry Hajdrihova 19 1000 Ljubljana Slovenia
- University of Nova Gorica Vipavska 13 5000 Nova Gorica Slovenia
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Theoretical and Experimental Study of the Effects of Cobalt and Nickel Doping within IrO2 on the Acidic Oxygen Evolution Reaction. J Catal 2022. [DOI: 10.1016/j.jcat.2022.02.016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Zhao S, Yang Y, Tang Z. Insight into Structural Evolution, Active Sites, and Stability of Heterogeneous Electrocatalysts. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202110186] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Shenlong Zhao
- School of Chemical and Biomolecular Engineering The University of Sydney Sydney NSW 2006 Australia
| | - Yongchao Yang
- School of Chemical and Biomolecular Engineering The University of Sydney Sydney NSW 2006 Australia
| | - Zhiyong Tang
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication CAS Center for Excellence in Nanoscience National Center for Nanoscience and Technology Beijing 100190 P. R. China
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Vonrüti N, Rao R, Giordano L, Shao-Horn Y, Aschauer U. Implications of Nonelectrochemical Reaction Steps on the Oxygen Evolution Reaction: Oxygen Dimer Formation on Perovskite Oxide and Oxynitride Surfaces. ACS Catal 2022. [DOI: 10.1021/acscatal.1c03308] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Nathalie Vonrüti
- Department of Chemistry, Biochemistry and Pharmaceutical Science, University of Bern, Freiestrasse 3, CH-3012 Bern, Switzerland
| | - Reshma Rao
- Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Livia Giordano
- Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Yang Shao-Horn
- Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Ulrich Aschauer
- Department of Chemistry, Biochemistry and Pharmaceutical Science, University of Bern, Freiestrasse 3, CH-3012 Bern, Switzerland
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