1
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Lv J, Cao A, Zhong Y, Lin Q, Li X, Wu HB, Yan J, Wu A. Promoting the OH cycle on an activated dynamic interface for electrocatalytic ammonia synthesis. Nat Commun 2024; 15:6675. [PMID: 39107312 PMCID: PMC11303799 DOI: 10.1038/s41467-024-50988-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Accepted: 07/26/2024] [Indexed: 08/10/2024] Open
Abstract
Renewable-driven electrocatalytic nitrate conversion offers a promising alternative to alleviate nitrate pollution and simultaneously harvest green ammonia. However, due to the complex proton-electron transfer processes, the reaction mechanism remains elusive, thereby limiting energy efficiency. Here, we adopt Ni(OH)₂ as a model catalyst to investigate the dynamic evolution of the reaction interface. A proposed OH cycle mechanism involves the formation of a locally OH-enriched microenvironment to promote the hydrogenation process, which is identified through in-situ spectroscopy and isotopic labelling. By further activating the dynamic state through the implementation of surface vacancies via plasma, we achieve a high Faradaic efficiency of almost 100%. The activated interface accelerates the OH cycle by enhancing dehydroxylation, water dissociation, and OH adsorption, thereby promoting nitrate electroreduction and inhibiting hydrogen evolution. We anticipate that rational activation of the dynamic interfacial state can facilitate electrocatalytic interface activity and improve reaction efficiency.
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Affiliation(s)
- Jiabao Lv
- State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou, P. R. China
- Baima Lake Laboratory, Hangzhou, P. R. China
| | - Ang Cao
- State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou, P. R. China
- Department of Physics, Technical University of Denmark, Kongens Lyngby, Denmark
| | - Yunhao Zhong
- State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou, P. R. China
| | - Qingyang Lin
- State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou, P. R. China
| | - Xiaodong Li
- State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou, P. R. China
| | - Hao Bin Wu
- State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou, P. R. China.
| | - Jianhua Yan
- State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou, P. R. China.
| | - Angjian Wu
- State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou, P. R. China.
- Baima Lake Laboratory, Hangzhou, P. R. China.
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2
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Shen W, Du Y, Liu H, Tsang CW, Chen X, Liang C. In Situ Synthesis of High-Entropy (Oxy)Hydroxides Via Electrochemical Reconfiguration As Catalysts For Efficient Water Oxidation. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024:e2404379. [PMID: 39096073 DOI: 10.1002/smll.202404379] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2024] [Revised: 07/12/2024] [Indexed: 08/04/2024]
Abstract
Surface reconstruction plays a pivotal role in enhancing the activity of the oxygen evolution reaction (OER), particularly in terms of the structural transformation from metal oxides to (oxy)hydroxides. Herein, a novel (oxy)hydroxide (FeCoNiCuMoOOH) with high entropy is developed by the electrochemical reconstitution of corresponding oxide (FeCoNiCuMoOx). Significantly, the FeCoNiCuMoOOH exhibits much higher OER electrocatalytic activity and durability with an overpotential as low as 201 mV at a current density of 10 mA cm-2, and with a Tafel slope of 39.4 mV dec-1. The FeCoNiCuMoOOH/NF presents high stability when testing under a constant current at 100 mA cm-2 within 1000 h. The surface reconstruction is a process of dissolution-reprecipitation of Cu and Mo species and co-hydroxylation of five metal species, which ultimately leads to the formation of FeCoNiCuMoOOH from FeCoNiCuMoOx. This study holds great significance in the realm of designing high-entropy (oxy)hydroxides catalysts with exceptional activity and stability for OER.
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Affiliation(s)
- Weilin Shen
- Laboratory of Advanced Materials and Catalytic Engineering, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, China
| | - Yan Du
- Laboratory of Advanced Materials and Catalytic Engineering, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, China
| | - Huibin Liu
- Laboratory of Advanced Materials and Catalytic Engineering, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, China
| | - Chi-Wing Tsang
- Faculty of Science and Technology, Technological and Higher Education Institute of Hong Kong (Thei), Hong Kong, 999077, China
| | - Xiao Chen
- Laboratory of Advanced Materials and Catalytic Engineering, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, China
| | - Changhai Liang
- Laboratory of Advanced Materials and Catalytic Engineering, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, China
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3
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Yao L, Zhang F, Yang S, Zhang H, Li Y, Yang C, Yang H, Cheng Q. Sub-2 nm IrRuNiMoCo High-Entropy Alloy with Iridium-Rich Medium-Entropy Oxide Shell to Boost Acidic Oxygen Evolution. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2314049. [PMID: 38516927 DOI: 10.1002/adma.202314049] [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: 03/07/2024] [Indexed: 03/23/2024]
Abstract
Ensuring high catalytic activity and durability at low iridium (Ir)usage is still a big challenge for the development of electrocatalysts toward oxygen evolution reaction (OER) in proton exchange membrane water electrolysis (PEMWE). Here, a rapid liquid-reduction combined with surface galvanic replacement strategy is reported to synthesize the sub 2 nm high-entropy alloy (HEA) nanoparticles featured with Ir-rich IrRuNiMo medium-entropy oxide shell (Ir-MEO) and a IrRuCoNiMo HEA core (HEA@Ir-MEO). Advanced spectroscopies reveal that the Ir-rich MEO shell inhibits the severe structural evolution of transition metals upon the OER, thus guaranteeing the structural stability. In situ differential electrochemical mass spectrometry, activation energy analysis and theoretical calculations unveil that the OER on HEA@Ir-MEO follows an adsorbate evolution mechanism pathway, where the energy barrier of rate-determining step is substantially lowered. The optimized catalyst delivers the excellent performance (1.85 V/3.0 A cm-2@80 °C), long-term stability (>500 h@1.0 Acm-2), and low energy consumption (3.98 kWh Nm-3 H2 @1.0 A cm-2) in PEMWE with low Ir usage of ≈0.4 mg cm-2, realizing the dramatical reduction of hydrogen (H2) production cost to 0.88 dollar per kg (H2).
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Affiliation(s)
- Longping Yao
- Shanghai Advanced Research Institute, Chinese Academy of Science, Shanghai, 201210, P. R. China
- University of Chinese Academy of Science, Beijing, 100049, China
| | - Fengru Zhang
- Shanghai Advanced Research Institute, Chinese Academy of Science, Shanghai, 201210, P. R. China
| | - Shuai Yang
- School of Physical Science and Technology, ShanghaiTech University, Shanghai, 201210, P. R. China
| | - Hui Zhang
- Shanghai Advanced Research Institute, Chinese Academy of Science, Shanghai, 201210, P. R. China
- University of Chinese Academy of Science, Beijing, 100049, China
| | - Yuze Li
- Shanghai Advanced Research Institute, Chinese Academy of Science, Shanghai, 201210, P. R. China
- University of Chinese Academy of Science, Beijing, 100049, China
| | - Chenlu Yang
- Shanghai Advanced Research Institute, Chinese Academy of Science, Shanghai, 201210, P. R. China
- University of Chinese Academy of Science, Beijing, 100049, China
| | - Hui Yang
- Shanghai Advanced Research Institute, Chinese Academy of Science, Shanghai, 201210, P. R. China
- University of Chinese Academy of Science, Beijing, 100049, China
| | - Qingqing Cheng
- Shanghai Advanced Research Institute, Chinese Academy of Science, Shanghai, 201210, P. R. China
- University of Chinese Academy of Science, Beijing, 100049, China
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4
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Fu G, Zhang L, Wei R, Liu H, Hou R, Zhang Z, Yang K, Zhang S. P-Incorporation Induced Enhancement of Lattice Oxygen Participation in Double Perovskite Oxides to Boost Water Oxidation. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2309091. [PMID: 38247184 DOI: 10.1002/smll.202309091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2023] [Revised: 12/24/2023] [Indexed: 01/23/2024]
Abstract
Activating the lattice oxygen in the catalysts to participate in the oxygen evolution reaction (OER), which can break the scaling relation-induced overpotential limitation (> 0.37 V) of the adsorbate evolution mechanism, has emerged as a new and highly effective guide to accelerate the OER. However, how to increase the lattice oxygen participation of catalysts during OER remains a major challenge. Herein, P-incorporation induced enhancement of lattice oxygen participation in double perovskite LaNi0.58Fe0.38P0.07O3-σ (PLNFO) is studied. P-incorporation is found to be crucial for enhancing the OER activity. The current density reaches 1.35 mA cmECSA -2 at 1.63 V (vs RHE), achieving a sixfold increase in intrinsic activity. Experimental evidences confirm the dominant lattice oxygen participation mechanism (LOM) for OER pathway on PLNFO. Further electronic structures reveal that P-incorporation shifts the O p-band center by 0.7 eV toward the Fermi level, making the states near the Fermi level more O p character, thus facilitating LOM and fast OER kinetics. This work offers a possible method to develop high-performance double perovskite OER catalysts for electrochemical water splitting.
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Affiliation(s)
- Gaoliang Fu
- Henan Provincial Key Laboratory of Nanocomposites and Applications, Institute of Nanostructured Functional Materials, Huanghe Science and Technology College, Zhengzhou, Henan, 450006, China
| | - Leilei Zhang
- Henan Provincial Key Laboratory of Nanocomposites and Applications, Institute of Nanostructured Functional Materials, Huanghe Science and Technology College, Zhengzhou, Henan, 450006, China
| | - Ruixue Wei
- Department of Cerebrovascular Diseases, The Second Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, 450052, China
| | - Huili Liu
- Henan Provincial Key Laboratory of Nanocomposites and Applications, Institute of Nanostructured Functional Materials, Huanghe Science and Technology College, Zhengzhou, Henan, 450006, China
| | - Ruipeng Hou
- Henan Provincial Key Laboratory of Nanocomposites and Applications, Institute of Nanostructured Functional Materials, Huanghe Science and Technology College, Zhengzhou, Henan, 450006, China
| | - Zheng Zhang
- Hubei Key Laboratory of Biomass Fibers and Eco-dyeing & Finishing, College of Chemistry and Chemical Engineering, Wuhan Textile University, Wuhan, 430200, China
| | - Kun Yang
- Henan Provincial Key Laboratory of Nanocomposites and Applications, Institute of Nanostructured Functional Materials, Huanghe Science and Technology College, Zhengzhou, Henan, 450006, China
| | - Shouren Zhang
- Henan Provincial Key Laboratory of Nanocomposites and Applications, Institute of Nanostructured Functional Materials, Huanghe Science and Technology College, Zhengzhou, Henan, 450006, China
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Ye J, Yuan B, Peng W, Liang J, Han Q, Hu R. Highly Stable Mo-NiO@NiFe-Layered Double Hydroxide Heterojunction Anode Catalyst for Alkaline Electrolyzers with Porous Membrane. ACS APPLIED MATERIALS & INTERFACES 2024. [PMID: 38652766 DOI: 10.1021/acsami.4c00974] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/25/2024]
Abstract
Heterostructure catalysts are considered as promising candidates for promoting the oxygen evolution reaction (OER) process due to their strong electron coupling. However, the inevitable dissolution and detachment of the heterostructure catalysts are caused by the severe reconstruction, dramatically limiting their industrial application. Herein, the NiFe-layered double hydroxide (LDH) nanosheets attached on Mo-NiO microrods (Mo-NiO@NiFe LDH) by the preoxidation strategy of the core NiMoN layer are synthesized for ensuring the high catalytic performance and stability. Owing to the enhanced electron coupling and preoxidation process, the obtained Mo-NiO@NiFe LDH exhibits a superlow overpotential of 253 mV to achieve a practically relevant current density of 1000 mA cm-2 for OER with exceptional stability over 1200 h. Notably, the overall water splitting system based on Mo-NiO@NiFe LDH reveals remarkable stability, maintaining the catalytic activity at a current density of 1000 mA cm-2 for 140 h under industrial harsh conditions. Furthermore, the Mo-NiO@NiFe LDH demonstrates outstanding activity and long-term durability in a practical alkaline electrolyzer assembly with a porous membrane, even surpassing the performance of IrO2. This work provides a new sight for designing and synthesizing highly stable heterojunction electrocatalysts, further promoting and realizing the industrial electrocatalytic OER.
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Affiliation(s)
- Jianwei Ye
- School of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, P. R. China
- Guangdong Engineering Technology Research Center of Advanced Energy Storage Materials, Guangzhou 510640, P. R. China
| | - Bin Yuan
- School of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, P. R. China
- Guangdong Engineering Technology Research Center of Advanced Energy Storage Materials, Guangzhou 510640, P. R. China
- Guangdong Province Waste Lithium Battery Clean Regeneration Engineering Technology Research Center, Zhaoqing 526116, P. R. China
| | - Weiliang Peng
- School of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, P. R. China
- Guangdong Engineering Technology Research Center of Advanced Energy Storage Materials, Guangzhou 510640, P. R. China
| | - Jinxia Liang
- School of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, P. R. China
- Guangdong Engineering Technology Research Center of Advanced Energy Storage Materials, Guangzhou 510640, P. R. China
| | - Qiying Han
- Guangdong Province Waste Lithium Battery Clean Regeneration Engineering Technology Research Center, Zhaoqing 526116, P. R. China
- Guangdong Jinsheng New Energy Co Ltd, Zhaoqing 526116, P. R. China
| | - Renzong Hu
- School of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, P. R. China
- Guangdong Engineering Technology Research Center of Advanced Energy Storage Materials, Guangzhou 510640, P. R. China
- Guangdong Province Waste Lithium Battery Clean Regeneration Engineering Technology Research Center, Zhaoqing 526116, P. R. China
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6
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Jiang H, Yu Y, Duan X, Chen P, Wang S, Qiu X, Ye L, Tu X. Heterostructured MoO 3 Anchored Defect-Rich NiFe-LDH/NF as a Robust Self-Supporting Electrocatalyst for Overall Water Splitting. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2307797. [PMID: 38032156 DOI: 10.1002/smll.202307797] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Revised: 11/02/2023] [Indexed: 12/01/2023]
Abstract
The rational design of inexpensive metal electrocatalysts with exciting catalytic activity for overall water splitting (OWS) remains a significant challenge. Heterostructures of NiFe layered double hydroxides (NiFe-LDHs) with abundant oxygen defects and tunable electronic properties have garnered considerable attention. Here, a self-supporting heterostructured catalyst (named MoO3/NiFe-NF) is synthesized via a hydrothermal method to grow NiFe-LDH with oxygen vacancies (OV) in situ on inexpensive nickel foam (NF). Subsequently, MoO3 is anchored and grown on the surface of NiFe-LDH by electrodeposition. The obtained catalysts achieved outstanding oxygen/hydrogen evolution reaction (OER/HER, 212 mV/85 mV@10 mA cm-2) performance in 1 m KOH. Additionally, when MoO3/NiFe-NF is utilized as the cathode and anode in OWS, a current density of 10 mA cm-2 can be obtained as an ultralow battery voltage of 1.43 V, a significantly lower value compared to the commercial electrolyzer incorporating Pt/C and IrO2 electrode materials. Finally, density functional theory (DFT) calculations and advanced spectroscopy technology are conducted to reveal the effects of heterojunctions and OV on the internal electronic structure of the electrical catalysts. Mainly, the present study provides a novel tactic for the rational design of remarkable, low-cost NiFe-LDH electrocatalysts with heterostructures for OWS.
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Affiliation(s)
- Hualin Jiang
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Institute of Environmental and Chemical Engineering, National-local Joint Engineering Research Center of Heavy Metals Pollutants Control and Resource Utilization, Nanchang Hangkong University, Nanchang, 330063, P. R. China
| | - Yunjie Yu
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Institute of Environmental and Chemical Engineering, National-local Joint Engineering Research Center of Heavy Metals Pollutants Control and Resource Utilization, Nanchang Hangkong University, Nanchang, 330063, P. R. China
| | - Xueqing Duan
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Institute of Environmental and Chemical Engineering, National-local Joint Engineering Research Center of Heavy Metals Pollutants Control and Resource Utilization, Nanchang Hangkong University, Nanchang, 330063, P. R. China
| | - Pinghua Chen
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Institute of Environmental and Chemical Engineering, Nanchang Hangkong University, Nanchang, 330063, P. R. China
| | - Shuai Wang
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Institute of Environmental and Chemical Engineering, Nanchang Hangkong University, Nanchang, 330063, P. R. China
| | - Xianhua Qiu
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Institute of Environmental and Chemical Engineering, Nanchang Hangkong University, Nanchang, 330063, P. R. China
| | - Long Ye
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Institute of Environmental and Chemical Engineering, Nanchang Hangkong University, Nanchang, 330063, P. R. China
| | - Xinman Tu
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Institute of Environmental and Chemical Engineering, National-local Joint Engineering Research Center of Heavy Metals Pollutants Control and Resource Utilization, Nanchang Hangkong University, Nanchang, 330063, P. R. China
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7
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Zhou L, Guo D, Wu L, Guan Z, Zou C, Jin H, Fang G, Chen X, Wang S. A restricted dynamic surface self-reconstruction toward high-performance of direct seawater oxidation. Nat Commun 2024; 15:2481. [PMID: 38509067 PMCID: PMC10954752 DOI: 10.1038/s41467-024-46708-8] [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: 11/23/2023] [Accepted: 03/07/2024] [Indexed: 03/22/2024] Open
Abstract
The development of highly efficient electrocatalysts for direct seawater splitting with bifunctionality for inhibiting anodic oxidation reconstruction and selective oxygen evolution reactions is a major challenge. Herein, we report a direct seawater oxidation electrocatalyst that achieves long-term stability for more than 1000 h at 600 mA/cm2@η600 and high selectivity (Faraday efficiency of 100%). This catalyst revolves an amorphous molybdenum oxide layer constructed on the beaded-like cobalt oxide interface by atomic layer deposition technology. As demonstrated, a new restricted dynamic surface self-reconstruction mechanism is induced by the formation a stable reconstructed Co-Mo double hydroxide phase interface layer. The device assembled into a two-electrode flow cell for direct overall seawater electrolysis maintained at 1 A/cm2@1.93 V for 500 h with Faraday efficiency higher than 95%. Hydrogen generation rate reaches 419.4 mL/cm2/h, and the power consumption (4.62 KWh/m3 H2) is lower than that of pure water (5.0 KWh/m3 H2) at industrial current density.
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Affiliation(s)
- Ling Zhou
- Key Laboratory of Carbon Materials of Zhejiang Province, College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, 325035, China
| | - Daying Guo
- Key Laboratory of Carbon Materials of Zhejiang Province, College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, 325035, China.
| | - Lianhui Wu
- Key Laboratory of Carbon Materials of Zhejiang Province, College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, 325035, China
| | - Zhixi Guan
- Key Laboratory of Carbon Materials of Zhejiang Province, College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, 325035, China
| | - Chao Zou
- Key Laboratory of Carbon Materials of Zhejiang Province, College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, 325035, China
| | - Huile Jin
- Key Laboratory of Carbon Materials of Zhejiang Province, College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, 325035, China
| | - Guoyong Fang
- Key Laboratory of Carbon Materials of Zhejiang Province, College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, 325035, China
| | - Xi'an Chen
- Key Laboratory of Carbon Materials of Zhejiang Province, College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, 325035, China.
| | - Shun Wang
- Key Laboratory of Carbon Materials of Zhejiang Province, College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, 325035, China.
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8
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Liu L, Liu T, Xu C, Zhao W, Fan J, Liu J, Ma X, Fu W. FeCoCuMnRuB Nanobox with Dual Driving of High-Entropy and Electron-Trap Effects as the Efficient Electrocatalyst for Water Oxidation. NANO LETTERS 2024; 24:2831-2838. [PMID: 38385633 DOI: 10.1021/acs.nanolett.3c04962] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/23/2024]
Abstract
High-entropy borides hold potential as electrocatalysts for water oxidation. However, the synthesis of the tailored nanostructures remains a challenge due to the thermodynamic immiscibility of polymetallic components. Herein, a FeCoCuMnRuB nanobox decorated with a nanosheet array was synthesized for the first time by a "coordination-etch-reduction" method. The FeCoCuMnRuB nanobox has various structural characteristics to express the catalytic performance; meanwhile, it combines the high-entropy effect of multiple components with the electron trap effect induced by electron-deficient B, synergistically regulating its electronic structure. As a result, FeCoCuMnRuB nanobox exhibits enhanced OER activity with a low overpotential (η10 = 233 mV), high TOF value (0.0539 s-1), small Tafel slope (61 mV/dec), and a satisfactory stability for 200 h, outperforming the high-entropy alloy and low-entropy borides. This work develops a high entropy and electron-deficient B-driven strategy for motivating the catalytic performance of water oxidation, which broadens the structural diversity and category of high-entropy materials.
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Affiliation(s)
- Li Liu
- Chongqing Key Laboratory of Green Synthesis and Applications, College of Chemistry, Chongqing Normal University, Chongqing 401331, P. R. China
| | - Tinghui Liu
- Chongqing Key Laboratory of Green Synthesis and Applications, College of Chemistry, Chongqing Normal University, Chongqing 401331, P. R. China
| | - Can Xu
- Chongqing Key Laboratory of Green Synthesis and Applications, College of Chemistry, Chongqing Normal University, Chongqing 401331, P. R. China
| | - Wanyi Zhao
- Chongqing Key Laboratory of Green Synthesis and Applications, College of Chemistry, Chongqing Normal University, Chongqing 401331, P. R. China
| | - Junping Fan
- Chongqing Key Laboratory of Green Synthesis and Applications, College of Chemistry, Chongqing Normal University, Chongqing 401331, P. R. China
| | - Jing Liu
- Chongqing Key Laboratory of Green Synthesis and Applications, College of Chemistry, Chongqing Normal University, Chongqing 401331, P. R. China
| | - Xinguo Ma
- School of Science, Hubei University of Technology, Wuhan 430068, P. R. China
| | - Wensheng Fu
- Chongqing Key Laboratory of Green Synthesis and Applications, College of Chemistry, Chongqing Normal University, Chongqing 401331, P. R. China
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9
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Fan RY, Zhang YS, Lv JY, Han GQ, Chai YM, Dong B. The Promising Seesaw Relationship Between Activity and Stability of Ru-Based Electrocatalysts for Acid Oxygen Evolution and Proton Exchange Membrane Water Electrolysis. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2304636. [PMID: 37789503 DOI: 10.1002/smll.202304636] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2023] [Revised: 08/09/2023] [Indexed: 10/05/2023]
Abstract
The development of electrocatalysts that are not reliant on iridium for efficient acid-oxygen evolution is a critical step towards the proton exchange membrane water electrolysis (PEMWE) and green hydrogen industry. Ruthenium-based electrocatalysts have garnered widespread attention due to their remarkable catalytic activity and lower commercial price. However, the challenge lies in balancing the seesaw relationship between activity and stability of these electrocatalysts during the acid-oxygen evolution reaction (OER). This review delves into the progress made in Ru-based electrocatalysts with regards to acid OER and PEMWE applications. It highlights the significance of customizing the acidic OER mechanism of Ru-based electrocatalysts through the coordination of adsorption evolution mechanism (AEM) and lattice oxygen oxidation mechanism (LOM) to attain the ideal activity and stability relationship. The promising tradeoffs between the activity and stability of different Ru-based electrocatalysts, including Ru metals and alloys, Ru single-atomic materials, Ru oxides, and derived complexes, and Ru-based heterojunctions, as well as their applicability to PEMWE systems, are discussed in detail. Furthermore, this paper offers insights on in situ control of Ru active sites, dynamic catalytic mechanism, and commercial application of PEMWE. Based on three-way relationship between cost, activity, and stability, the perspectives and development are provided.
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Affiliation(s)
- Ruo-Yao Fan
- State Key Laboratory of Heavy Oil Processing, College of Chemistry and Chemical Engineering, China University of Petroleum (East China), Qingdao, 266580, P. R. China
| | - Yu-Sheng Zhang
- State Key Laboratory of Heavy Oil Processing, College of Chemistry and Chemical Engineering, China University of Petroleum (East China), Qingdao, 266580, P. R. China
| | - Jing-Yi Lv
- State Key Laboratory of Heavy Oil Processing, College of Chemistry and Chemical Engineering, China University of Petroleum (East China), Qingdao, 266580, P. R. China
| | - Guan-Qun Han
- Department of Chemistry, University of Cincinnati, Cincinnati, Ohio, 45221, USA
| | - Yong-Ming Chai
- State Key Laboratory of Heavy Oil Processing, College of Chemistry and Chemical Engineering, China University of Petroleum (East China), Qingdao, 266580, P. R. China
| | - Bin Dong
- State Key Laboratory of Heavy Oil Processing, College of Chemistry and Chemical Engineering, China University of Petroleum (East China), Qingdao, 266580, P. R. China
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