1
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Zhang R, Han Y, Wu Q, Lu M, Liu G, Guo Z, Zhang Y, Zeng J, Wu X, Zhang D, Wu L, Song N, Yuan P, Du A, Huang K, Chen J, Yao X. Electron Accumulation Induced by Electron Injection-Incomplete Discharge on NiFe LDH for Enhanced Oxygen Evolution Reaction. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2402397. [PMID: 38634268 DOI: 10.1002/smll.202402397] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2024] [Indexed: 04/19/2024]
Abstract
Optimizing the local electronic structure of electrocatalysts can effectively lower the energy barrier of electrochemical reactions, thus enhancing the electrocatalytic activity. However, the intrinsic contribution of the electronic effect is still experimentally unclear. In this work, the electron injection-incomplete discharge approach to achieve the electron accumulation (EA) degree on the nickel-iron layered double hydroxide (NiFe LDH) is proposed, to reveal the intrinsic contribution of EA toward oxygen evolution reaction (OER). Such NiFe LDH with EA effect results in only 262 mV overpotential to reach 50 mA cm-2, which is 51 mV-lower compared with pristine NiFe LDH (313 mV), and reduced Tafel slope of 54.8 mV dec-1 than NiFe LDH (107.5 mV dec-1). Spectroscopy characterizations combined with theoretical calculations confirm that the EA near concomitant Vo can induce a narrower energy gap and lower thermodynamic barrier to enhance OER performance. This study clarifies the mechanism of the EA effect on OER activity, providing a direct electronic structure modulation guideline for effective electrocatalyst design.
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Affiliation(s)
- Rongrong Zhang
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun, 130012, P. R. China
| | - Yun Han
- Queensland Micro- and Nanotechnology Centre, School of Engineering and Built Environment, Griffith University, Nathan Campus, Nathan, QLD, 4111, Australia
| | - Qilong Wu
- IPRI, AIIM Facility, Innovation Campus, University of Wollongong, Squires Way, North Wollongong, NSW, 2500, Australia
| | - Min Lu
- State Key Laboratory of Applied Organic Chemistry, Frontiers Science Center for Rare Isotopes, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, China
| | - Guangsheng Liu
- Department of Chemistry and Biochemistry, Duquesne University, Pittsburgh, PA, 15282, USA
| | - Zhangtao Guo
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun, 130012, P. R. China
| | - Yaowen Zhang
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun, 130012, P. R. China
| | - Jianrong Zeng
- Shanghai Synchrotron Radiation Facility, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai, 201204, P. R. China
| | - Xiaofeng Wu
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun, 130012, P. R. China
| | - Dongdong Zhang
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun, 130012, P. R. China
| | - Liyun Wu
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun, 130012, P. R. China
| | - Nan Song
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun, 130012, P. R. China
| | - Pei Yuan
- College of Materials Science and Engineering, Fuzhou University, Fuzhou, 350002, P. R. China
| | - Aijun Du
- School of Chemistry and Physics and Centre for Materials Science, Queensland University of Technology Gardens Point Campus, Brisbane, 4001, Australia
| | - Keke Huang
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun, 130012, P. R. China
| | - Jun Chen
- IPRI, AIIM Facility, Innovation Campus, University of Wollongong, Squires Way, North Wollongong, NSW, 2500, Australia
| | - Xiangdong Yao
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun, 130012, P. R. China
- School of Advanced Energy and IGCME, Shenzhen Campus, Sun Yat-Sen University (SYSU), Shenzhen, Guangdong, 518100, China
- Chemistry and Chemical Engineering Guangdong Laboratory, Shantou, 515063, P. R. China
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2
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Xu T, Liu T, Jing Y. Bifunctional oxygen reduction/evolution reaction electrocatalysts achieved by axial ligand modulation on two-dimensional porphyrin frameworks. Phys Chem Chem Phys 2024; 26:18707-18714. [PMID: 38932574 DOI: 10.1039/d4cp01235f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/28/2024]
Abstract
Exploring efficient and low-cost oxygen reduction and oxygen evolution reaction (ORR/OER) bifunctional catalysts is essential for the development of energy storage and conversion devices. Herein, enlightened by the experimentally synthesized cobalt(II) meso-tetraethynylporphyrins (Co-TEP) molecule, we designed a novel 2D covalent organic framework (COF), namely a 2D Co-TEP monolayer, by dimensional expansion. The 2D Co-TEP monolayer, with Co atoms distributed separately and stabilized by uniform pyrrolic-N coordination, features metal-nitrogen-carbon single-atom catalyst activity and shows tunable catalytic activity for the electrochemical ORR/OER by axial ligand (O, OH, Cl, CN, CH3, NO, F) modulation. By means of the state-of-the-art constant-potential first-principles computations and microkinetic simulations, we demonstrated that 2D Co-TEP-CN exhibits good ORR/OER performance in both acidic and alkaline conditions. The difference between the onset-potential for the OER and the half-wave potential for the ORR is only 0.85 V at pH = 1, smaller than that of Pt/IrO2 electrocatalysts. The good electrocatalytic performance is maintained by replacing the center metal atoms with Mn, Fe and/or Ni. Our investigation highlights the role of the pyrrolic-N coordination and the ligands in improving the catalytic activity of 2D COFs and provides new insights into the rational design of efficient bifunctional ORR/OER catalysts.
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Affiliation(s)
- Tianze Xu
- Jiangsu Co-Innovation Centre of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China.
| | - Tianyang Liu
- Jiangsu Co-Innovation Centre of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China.
| | - Yu Jing
- Jiangsu Co-Innovation Centre of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China.
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3
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Quan L, Jiang H, Mei G, Sun Y, You B. Bifunctional Electrocatalysts for Overall and Hybrid Water Splitting. Chem Rev 2024; 124:3694-3812. [PMID: 38517093 DOI: 10.1021/acs.chemrev.3c00332] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/23/2024]
Abstract
Electrocatalytic water splitting driven by renewable electricity has been recognized as a promising approach for green hydrogen production. Different from conventional strategies in developing electrocatalysts for the two half-reactions of water splitting (e.g., the hydrogen and oxygen evolution reactions, HER and OER) separately, there has been a growing interest in designing and developing bifunctional electrocatalysts, which are able to catalyze both the HER and OER. In addition, considering the high overpotentials required for OER while limited value of the produced oxygen, there is another rapidly growing interest in exploring alternative oxidation reactions to replace OER for hybrid water splitting toward energy-efficient hydrogen generation. This Review begins with an introduction on the fundamental aspects of water splitting, followed by a thorough discussion on various physicochemical characterization techniques that are frequently employed in probing the active sites, with an emphasis on the reconstruction of bifunctional electrocatalysts during redox electrolysis. The design, synthesis, and performance of diverse bifunctional electrocatalysts based on noble metals, nonprecious metals, and metal-free nanocarbons, for overall water splitting in acidic and alkaline electrolytes, are thoroughly summarized and compared. Next, their application toward hybrid water splitting is also presented, wherein the alternative anodic reactions include sacrificing agents oxidation, pollutants oxidative degradation, and organics oxidative upgrading. Finally, a concise statement on the current challenges and future opportunities of bifunctional electrocatalysts for both overall and hybrid water splitting is presented in the hope of guiding future endeavors in the quest for energy-efficient and sustainable green hydrogen production.
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Affiliation(s)
- Li Quan
- Key Laboratory of Material Chemistry for Energy Conversion and Storage Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, Hubei 430074, China
| | - Hui Jiang
- Key Laboratory of Material Chemistry for Energy Conversion and Storage Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, Hubei 430074, China
| | - Guoliang Mei
- Key Laboratory of Material Chemistry for Energy Conversion and Storage Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, Hubei 430074, China
| | - Yujie Sun
- Department of Chemistry, University of Cincinnati, Cincinnati, Ohio 45221, United States
| | - Bo You
- Key Laboratory of Material Chemistry for Energy Conversion and Storage Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, Hubei 430074, China
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4
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Wang D, Zhang C, Hu J, Zhuang T, Lv Z. Nitriding-reduction fabrication of coralloid CoN/Ni/NiO for efficient electrocatalytic overall water splitting. J Colloid Interface Sci 2024; 655:217-225. [PMID: 37939405 DOI: 10.1016/j.jcis.2023.11.018] [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: 08/22/2023] [Revised: 10/31/2023] [Accepted: 11/03/2023] [Indexed: 11/10/2023]
Abstract
The introduction of nitride in Ni/NiO-based catalytic system for electrocatalystic water splitting via a skillful strategy remains a great challenge. Herein, we proposed a one-step urea nitriding-reduction strategy for the fabrication of novel CoN/Ni/NiO electrocatalyst on carbon cloth (CC). The combination of CoN and Ni/NiO could construct CoN/Ni interface and expose more active sites, thus exhibiting excellent hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) performance in alkaline media. Consequently, CoN/Ni/NiO catalyst exhibited remarkable HER/OER performance with an overpotential of 92 mV/114 mV at 10 mA cm-2 in 1.0 M KOH, along with a low cell voltage of 1.56 V to enhance overall water splitting. In addition, when CoN was introduced in Ni/NiO system, CoN/Ni/NiO displayed high conductivity, large active surface areas, high Faradic efficiency (FE) and remarkable stability. Density functional theory (DFT) calculations demonstrated that CoN/Ni/NiO possessed a decreased d-band center beneficial for optimizing the energy barrier of intermediates. Specifically, the ΔGH2O (0.088 eV) and ΔGH* (0.18 eV) in HER and the ΔGOOH* (1.4 eV) of rate determining step (O*→OOH*) in OER of CoN/Ni/NiO catalyst were optimized to achieve high water splitting activity. Simultaneously, for adsorbed H2O on CoN/Ni/NiO, the OH bond length extended from 0.975 to 1.110 Å, and the bond angle enlarged from 104.271 to 109.471°, thereby directly demonstrating the excellent HER/OER performance of CoN/Ni/NiO.
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Affiliation(s)
- Deling Wang
- State Key Laboratory Base for Eco-chemical Engineering, College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Chao Zhang
- State Key Laboratory Base for Eco-chemical Engineering, College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China; Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology, Guangxi University, Nanning 530004, China.
| | - Jinguang Hu
- Department of Chemical & Petroleum Engineering, Schulich School of Engineering, Calgary, Alberta T2N 1N4, Canada
| | - Tao Zhuang
- Key Laboratory of Rubber-Plastics, Ministry of Education/Shandong Provincial Key Laboratory of Rubber-plastics, Qingdao University of Science & Technology, Qingdao 266042, Shandong, China.
| | - Zhiguo Lv
- State Key Laboratory Base for Eco-chemical Engineering, College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China.
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5
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Xu X, Dong Y, Wang X, Liu F, Ren J, Wang H, Wang R. High-Density NiCu Bimetallic Phosphide Nanosheet Clusters Constructed by Cu-Induced Effect Boost Total Urea Hydrolysis for Hydrogen Production. Inorg Chem 2023; 62:4648-4661. [PMID: 36893334 DOI: 10.1021/acs.inorgchem.3c00082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/11/2023]
Abstract
The development of urea electrolysis technologies toward energy-saving hydrogen production can alleviate the environmental issues caused by urea-rich wastewater. In the current practices, the development of high-performance electrocatalysts in urea electrolysis remains critical. In this work, the NiCu-P/NF catalyst is prepared by anchoring Ni/Cu bimetallic phosphide nanosheets onto Ni foam (NF). In the experiments, the micron-sized elemental Cu polyhedron is first anchored on the surface of the NF substrate to provide more space for the growth of bimetallic nanosheets. Meanwhile, the Cu element adjusted the electron distribution within the composite and formed Ni/P orbital vacancies, which in turn accelerated the kinetic process. As a result, the optimal NiCu-P/NF sample exhibits excellent catalytic activity and cycling stability in a hybrid electrolysis system for the urea oxidation reaction (UOR) and hydrogen evolution reaction (HER). Further, the alkaline urea-containing electrolyzer is assembled with NiCu-P/NF as two electrodes reached a current density of 50 mA cm-2 with a low driving potential of 1.422 V, which outperforms the typical commercial noble metal electrolyzer (RuO2||Pt/C). Those findings suggest the feasibility of the substrate regulation strategy to increase the growth density of active species in preparation of an efficient bifunctional electrocatalyst for cracking the urea-containing wastewater.
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Affiliation(s)
- Xiao Xu
- College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Yucheng Dong
- College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Xuyun Wang
- College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Fangfang Liu
- Weifang University of Science and Technology, Shouguang, Weifang 262700, China
| | - Jianwei Ren
- Department of Mechanical Engineering Science, University of Johannesburg, Cnr Kingsway and University Roads, Auckland Park, Johannesburg 2092, South Africa
| | - Hui Wang
- College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Rongfang Wang
- College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
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6
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Jia H, Yao N, Zhu J, Luo W. Reconstructured Electrocatalysts during Oxygen Evolution Reaction under Alkaline Electrolytes. Chemistry 2023; 29:e202203073. [PMID: 36367365 DOI: 10.1002/chem.202203073] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2022] [Revised: 11/11/2022] [Accepted: 11/11/2022] [Indexed: 11/13/2022]
Abstract
The development of electrocatalysts with high-efficiency and clear structure-activity relationship towards the sluggish oxygen evolution reaction (OER) is essential for the wide application of water electrolyzers. Recently, the dynamic reconstruction phenomenon of the catalysts' surface structures during the OER process has been discovered. With the help of various advanced ex situ and in situ characterization, it is demonstrated that such surface reconstruction could yield actual active species to catalyze the water oxidation process. However, the attention and studies of potential interaction between reconstructed species and substrate are lacking. This review summarizes the recent development of typical reconstructed electrocatalysts and the substrate effect. First, the advanced characterization for electrocatalytic reconstruction is briefly discussed. Then, typical reconstructed electrocatalysts are comprehensively summarized and the key role of substrate effects during the OER process is emphasized. Finally, the future challenges and perspectives of surface reconstructed catalysts for water electrolysis are discussed.
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Affiliation(s)
- Hongnan Jia
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, 430072, P. R. China
| | - Na Yao
- State Key Laboratory of New Textile Materials and Advanced Processing Technologies, Wuhan Textile University, Wuhan, 430073, P. R. China
| | - Juan Zhu
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, 430072, P. R. China
| | - Wei Luo
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, 430072, P. R. China
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7
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Wang L, Zhao K, Qi Z, Yang Y, Luo W, Yang W, Li L, Hao J, Shi W. Crystalline-Dependent Discharge Process of Locally Enhanced Electrooxidation Activity on Ni 2P. Inorg Chem 2023; 62:2470-2479. [PMID: 36701249 DOI: 10.1021/acs.inorgchem.2c04462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
The state-of-the-art transition-based electrocatalysts in alkaline media generally suffer from unavoidable surface reconstruction during oxygen evolution reaction measurements, leading to the collapse and loss of the crystalline matrix. Low potential discharge offers a gentle way for surface reconstruction and thus realizes the manipulation of the real active site. Nevertheless, the absence of a fundamental understanding focus on this discharge region renders the functional phase, either the crystalline or amorphous matrix, for the controllable reconstruction still undecidable. Herein, we report a scenario to employ different crystalline matrices as electrocatalysts for discharge region reconstruction. The representative low crystalline Ni2P (LC-Ni2P) possesses a relatively weak surface structure compared with highly crystalline or amorphous Ni2P (HC-Ni2P or A-Ni2P), which contributes abundant oxygen vacancies after the discharge process. The fast discharge behavior of LC-Ni2P leads to the uniform distribution of these vacancies and thus endows the inner interface with reactant activating functionality. A high increase in current density of 36.7% is achieved at 2.32 V (vs RHE) for the LC-Ni2P electrode. The understanding of the discharge behavior in this study, on different crystalline matrices, presents insights into the establishment of controllable surface reconstruction for an effective oxygen evolution reaction.
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Affiliation(s)
- Ling Wang
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013Jiangsu Province, China
| | - Kun Zhao
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013Jiangsu Province, China
| | - Zhihao Qi
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013Jiangsu Province, China
| | - Yonggang Yang
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013Jiangsu Province, China
| | - Wei Luo
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013Jiangsu Province, China
| | - Wenshu Yang
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013Jiangsu Province, China
| | - Longhua Li
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013Jiangsu Province, China
| | - Jinhui Hao
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013Jiangsu Province, China
| | - Weidong Shi
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013Jiangsu Province, China
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Yang Y, Du X, Wang S, Zhao K, Wang L, Qi Z, Yang W, Hao J, Shi W. Cation Transport Effect on Nickel Iron Oxyhydroxide Electrodes in the Oxygen Evolution Reaction. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.2c03345] [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)
- Yonggang Yang
- School of Chemistry and Engineering, Jiangsu University, Zhenjiang212013, China
| | | | - Shuaishuai Wang
- School of Chemistry and Engineering, Jiangsu University, Zhenjiang212013, China
| | - Kun Zhao
- School of Chemistry and Engineering, Jiangsu University, Zhenjiang212013, China
| | - Ling Wang
- School of Chemistry and Engineering, Jiangsu University, Zhenjiang212013, China
| | - Zhihao Qi
- School of Chemistry and Engineering, Jiangsu University, Zhenjiang212013, China
| | - Wenshu Yang
- School of Chemistry and Engineering, Jiangsu University, Zhenjiang212013, China
| | - Jinhui Hao
- School of Chemistry and Engineering, Jiangsu University, Zhenjiang212013, China
| | - Weidong Shi
- School of Chemistry and Engineering, Jiangsu University, Zhenjiang212013, China
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9
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Liu Y, Xu Q, Yang Y, Chen J, Pan H, Zheng W. Ionic liquid–controlled growth of bifunctional NiCo2O4 nanostructures with different dimensionalities on carbon cloth for oxygen evolution reaction and asymmetric supercapacitor. Electrochim Acta 2022. [DOI: 10.1016/j.electacta.2022.141040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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10
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Xu H, Liu B, Liu J, Yao Y, Gu ZG, Yan X. Revealing the surface structure-performance relationship of interface-engineered NiFe alloys for oxygen evolution reaction. J Colloid Interface Sci 2022; 622:986-994. [PMID: 35561616 DOI: 10.1016/j.jcis.2022.04.160] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Revised: 04/02/2022] [Accepted: 04/26/2022] [Indexed: 11/16/2022]
Abstract
NiFe alloys are among the most promising electrocatalysts for oxygen evolution reaction (OER). However, a comprehensive study is yet to be done to reveal the surface structure-performance relationship of NiFe alloys. In particular, the role of the ultrathin surface oxide layer, which is unavoidable for pure NiFe alloys, is always neglected. Herein, a series of NiFe alloys with different Ni/Fe ratios are fabricated. It is found that different Ni/Fe ratios lead to significant differences in surface composition and structure of the NiFe alloys, and thus affect their catalytic performance. Then, the oxide/metal interface of the Ni4Fe1 alloy is tailored by adjusting the hydrogenation temperature to further understand the surface structure-activity relationship, and the optimal OER performance is achieved at the oxide/metal interfaces that have suitable surface Fe/Ni ratio and an appropriate amount of oxygen vacancies. In-situ Raman characterization shows that the Ni4Fe1 alloy with well-tailored oxide/metal interface facilitates the formation of active species. Density functional theory calculations demonstrate that the ultrathin surface oxide layers are responsible for the high catalytic activity of the NiFe alloys, and that the quantity of oxygen vacancies in the surface oxides affects the adsorption energy of O* and thus to a great extent determines the catalytic activity.
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Affiliation(s)
- Hanwen Xu
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, China
| | - Bing Liu
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, China
| | - Jiangyong Liu
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China
| | - Yang Yao
- Department of Health Sciences and Technology, ETH Zürich, Zürich 8092, Switzerland
| | - Zhi-Guo Gu
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, China
| | - Xiaodong Yan
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, China.
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11
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Yao N, Wang G, Jia H, Yin J, Cong H, Chen S, Luo W. Intermolecular Energy Gap-Induced Formation of High-Valent Cobalt Species in CoOOH Surface Layer on Cobalt Sulfides for Efficient Water Oxidation. Angew Chem Int Ed Engl 2022; 61:e202117178. [PMID: 35037704 DOI: 10.1002/anie.202117178] [Citation(s) in RCA: 43] [Impact Index Per Article: 21.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Indexed: 11/07/2022]
Abstract
Transition metal-based electrocatalysts will undergo surface reconstruction to form active oxyhydroxide-based hybrids, which are regarded as the "true-catalysts" for the oxygen evolution reaction (OER). Much effort has been devoted to understanding the surface reconstruction, but little on identifying the origin of the enhanced performance derived from the substrate effect. Herein, we report the electrochemical synthesis of amorphous CoOOH layers on the surface of various cobalt sulfides (CoSα ), and identify that the reduced intermolecular energy gap (Δinter ) between the valence band maximum (VBM) of CoOOH and the conduction band minimum (CBM) of CoSα can accelerate the formation of OER-active high-valent Co4+ species. The combination of electrochemical and in situ spectroscopic approaches, including cyclic voltammetry (CV), operando electron paramagnetic resonance (EPR) and Raman, reveals that Co species in the CoOOH/Co9 S8 are more readily oxidized to CoO2 /Co9 S8 than in CoOOH and other CoOOH/CoSα . This work provides a new design principle for transition metal-based OER electrocatalysts.
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Affiliation(s)
- Na Yao
- College of Chemistry and Molecular Sciences, Wuhan University, Hubei, 430072, Wuhan, P. R. China
| | - Gongwei Wang
- College of Chemistry and Molecular Sciences, Wuhan University, Hubei, 430072, Wuhan, P. R. China
| | - Hongnan Jia
- College of Chemistry and Molecular Sciences, Wuhan University, Hubei, 430072, Wuhan, P. R. China
| | - Jinlong Yin
- College of Chemistry and Molecular Sciences, Wuhan University, Hubei, 430072, Wuhan, P. R. China
| | - Hengjiang Cong
- College of Chemistry and Molecular Sciences, Wuhan University, Hubei, 430072, Wuhan, P. R. China
| | - Shengli Chen
- College of Chemistry and Molecular Sciences, Wuhan University, Hubei, 430072, Wuhan, P. R. China
| | - Wei Luo
- College of Chemistry and Molecular Sciences, Wuhan University, Hubei, 430072, Wuhan, P. R. China.,Suzhou Institute of Wuhan University, Suzhou, 215123, Jiangsu, P. R. China
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12
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Shao Z, Zhu Q, Sun Y, Zhang Y, Jiang Y, Deng S, Zhang W, Huang K, Feng S. Phase-Reconfiguration-Induced NiS/NiFe 2 O 4 Composite for Performance-Enhanced Zinc-Air Batteries. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2022; 34:e2110172. [PMID: 35170104 DOI: 10.1002/adma.202110172] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Revised: 01/26/2022] [Indexed: 06/14/2023]
Abstract
Constructing composite structures is an essential approach for obtaining multiple functionalities in a single entity. Available synthesis methods of the composites need to be urgently exploited; especially in situ construction. Here, a NiS/NiFe2 O4 composite through a local metal-S coordination at the interface is reported, which is derived from phase reconstruction in the highly defective matrix. X-ray absorption fine structure confirms that long-range order is broken via the local metal-S coordination and, by using electron energy loss spectroscopy, the introduction of NiS/NiFe2 O4 interfaces during the irradiation of plasma energy is identified. Density functional theory (DFT) calculations reveal that in situ phase reconfiguration is crucial for synergistically reducing energetic barriers and accelerating reaction kinetics toward catalyzing the oxygen evolution reaction (OER). As a result; it leads to an overpotential of 230 mV @10 mA cm-2 for the OER and a half-wave potential of 0.81 V for the oxygen reduction reaction (ORR); as well as an excellent zinc-air battery (ZAB) performance with a power density of 148.5 mW cm-2 . This work provides a new compositing strategy in terms of fast phase reconstruction of bifunctional catalysts.
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Affiliation(s)
- Zhiyu Shao
- State Key Laboratory of Inorganic Synthesis and Preparative, Chemistry Jilin Provincial International Cooperation Key Laboratory of Advanced Inorganic Solid Functional Materials, College of Chemistry, Jilin University, Qianjin Street 2699, Changchun, 130012, China
| | - Qian Zhu
- State Key Laboratory of Inorganic Synthesis and Preparative, Chemistry Jilin Provincial International Cooperation Key Laboratory of Advanced Inorganic Solid Functional Materials, College of Chemistry, Jilin University, Qianjin Street 2699, Changchun, 130012, China
| | - Yu Sun
- School of Advanced Materials and Nanotechnology, Xidian University, Xi'an, 710126, China
| | - Yuan Zhang
- State Key Laboratory of Inorganic Synthesis and Preparative, Chemistry Jilin Provincial International Cooperation Key Laboratory of Advanced Inorganic Solid Functional Materials, College of Chemistry, Jilin University, Qianjin Street 2699, Changchun, 130012, China
| | - Yilan Jiang
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lake of Ministry of Education, College of Environment, Hohai University, Nanjing, 210098, China
| | - Shiqing Deng
- School of Mathematics and Physics, University of Science and Technology Beijing, Beijing, 100083, China
- Key Laboratory of Advanced Materials of Ministry of Education, Tsinghua University, Beijing, 100084, China
| | - Wei Zhang
- Electron Microscopy Center, Jilin University, Changchun, 130012, China
| | - Keke Huang
- State Key Laboratory of Inorganic Synthesis and Preparative, Chemistry Jilin Provincial International Cooperation Key Laboratory of Advanced Inorganic Solid Functional Materials, College of Chemistry, Jilin University, Qianjin Street 2699, Changchun, 130012, China
| | - Shouhua Feng
- State Key Laboratory of Inorganic Synthesis and Preparative, Chemistry Jilin Provincial International Cooperation Key Laboratory of Advanced Inorganic Solid Functional Materials, College of Chemistry, Jilin University, Qianjin Street 2699, Changchun, 130012, China
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13
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Yao N, Wang G, Jia H, Yin J, Cong H, Chen S, Luo W. Intermolecular Energy Gap‐Induced Formation of High‐Valent Cobalt Species in CoOOH Surface Layer on Cobalt Sulfides for Efficient Water Oxidation. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202117178] [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)
- Na Yao
- Wuhan University Chemistry CHINA
| | | | | | | | | | | | - Wei Luo
- wuhan university college of chemistry and molecular sciecnes luojia road 430072 Wuhan CHINA
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