1
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Yang X, Xu B, Chen JG, Yang X. Recent Progress in Electrochemical Nitrogen Reduction on Transition Metal Nitrides. CHEMSUSCHEM 2023; 16:e202201715. [PMID: 36522288 DOI: 10.1002/cssc.202201715] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Revised: 12/13/2022] [Indexed: 06/17/2023]
Abstract
Distributed electrochemical nitrogen reduction reaction (ENRR) powered by renewable energy for the on-site production of ammonia is an attractive alternative to the industrial Haber-Bosch process, which is responsible for roughly 2 % of global energy consumption. In this Review, we summarize recent progress in the ENRR catalyzed by transition metal nitrides (TMNs). The unique electronic structures of TMNs make them promising ENRR catalysts for active and selective ammonia production, which have been predicted theoretically and demonstrated experimentally. Reaction pathways and deactivation mechanisms of the ENRR on different TMNs are surveyed, and current understanding of structure-activity relations is discussed. To develop highly active, selective, and stable TMN catalysts for industrial-scale ENRR, membrane electrode assembly configuration is recommended in catalyst evaluation. Furthermore, we highlight the importance of developing mechanistic understanding on ENRR with different operando spectroscopic techniques.
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Affiliation(s)
- Xiaoju Yang
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, 430074, Wuhan, P. R. China
| | - Bingjun Xu
- College of Chemistry and Molecular Engineering, Peking University, 100871, Beijing, P. R. China
| | - Jingguang G Chen
- Department of Chemical Engineering, Columbia University, 10027, New York, NY, USA
- Chemistry Division, Brookhaven National Laboratory, 11973, Upton, NY, USA
| | - Xuan Yang
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, 430074, Wuhan, P. R. China
- Department of Chemical Engineering, Columbia University, 10027, New York, NY, USA
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2
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Su L, Jin Y, Gong D, Ge X, Zhang W, Fan X, Luo W. The Role of Discrepant Reactive Intermediates on Ru-Ru 2 P Heterostructure for pH-Universal Hydrogen Oxidation Reaction. Angew Chem Int Ed Engl 2023; 62:e202215585. [PMID: 36354203 DOI: 10.1002/anie.202215585] [Citation(s) in RCA: 16] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2022] [Indexed: 11/11/2022]
Abstract
Developing highly efficient electrocatalysts for hydrogen oxidation reaction (HOR) under alkaline media is essential for the commercialization of alkaline exchange membrane fuel cell (AEMFC). However, the kinetics of HOR in alkaline media is complicated, resulting in orders of magnitude slower than that in acid, even for the state-of-the-art Pt/C. Here, we find that Ru-Ru2 P/C heterostructure shows HOR performance with a non-monotonous variation in a whole pH region. Unexpectedly, an inflection point located at pH≈7 is observed, showing an anomalous behavior that HOR activity under alkaline media surpasses acidic media. Combining experimental results and theoretical calculations, we propose the roles of discrepant reactive intermediates for pH-universal HOR, while H* and H2 O* adsorption strengths are responsible for acidic HOR, and OH* adsorption strength is essential for alkaline HOR. This work not only sheds light on fundamentally understanding the mechanism of HOR but also provides new designing principles for pH-targeted electrocatalysts.
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Affiliation(s)
- Lixin Su
- Hubei Key Lab on Organic and Polymeric Opto-Electronic Materials, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei, 430072, P.R. China
| | - Yiming Jin
- Hubei Key Lab on Organic and Polymeric Opto-Electronic Materials, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei, 430072, P.R. China
| | - Dan Gong
- Hubei Key Lab on Organic and Polymeric Opto-Electronic Materials, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei, 430072, P.R. China
| | - Xin Ge
- Key Laboratory of Automobile Materials MOE, Jilin Provincial International Cooperation Key Laboratory of High-Efficiency Clean Energy Materials, Electron Microscopy Center, and International Center of Future Science, Jilin University, Jilin, Changchun, 130012, P.R. China
| | - Wei Zhang
- Key Laboratory of Automobile Materials MOE, Jilin Provincial International Cooperation Key Laboratory of High-Efficiency Clean Energy Materials, Electron Microscopy Center, and International Center of Future Science, Jilin University, Jilin, Changchun, 130012, P.R. China
| | - Xinran Fan
- Hubei Key Lab on Organic and Polymeric Opto-Electronic Materials, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei, 430072, P.R. China
| | - Wei Luo
- Hubei Key Lab on Organic and Polymeric Opto-Electronic Materials, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei, 430072, P.R. China
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3
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Zhao K, Chang X, Su H, Nie Y, Lu Q, Xu B. Enhancing Hydrogen Oxidation and Evolution Kinetics by Tuning the Interfacial Hydrogen‐Bonding Environment on Functionalized Platinum Surfaces. Angew Chem Int Ed Engl 2022; 61:e202207197. [DOI: 10.1002/anie.202207197] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Indexed: 11/12/2022]
Affiliation(s)
- Kaiyue Zhao
- College of Chemistry and Molecular Engineering Peking University Beijing 100871 China
| | - Xiaoxia Chang
- College of Chemistry and Molecular Engineering Peking University Beijing 100871 China
| | - Hai‐Sheng Su
- College of Chemistry and Molecular Engineering Peking University Beijing 100871 China
| | - Yiming Nie
- Department of Medicinal Chemistry School of Pharmaceutical Sciences Cheeloo College of Medicine Shandong University Jinan Shandong 250012 China
| | - Qi Lu
- State Key Laboratory of Chemical Engineering Department of Chemical Engineering Tsinghua University Beijing 100084 China
| | - Bingjun Xu
- College of Chemistry and Molecular Engineering Peking University Beijing 100871 China
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4
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Zhao K, Chang X, Su HS, Nie Y, Lu Q, Xu B. Enhancing Hydrogen Oxidation and Evolution Kinetics by Tuning Interfacial Hydrogen‐Bonding Environment on Functionalized Pt Surface. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202207197] [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)
- Kaiyue Zhao
- Peking University College of Chemistry and Molecular Engineering CHINA
| | - Xiaoxia Chang
- Peking University College of Chemistry and Molecular Engineering CHINA
| | - Hai-Sheng Su
- Peking University College of Chemistry and Molecular Engineering CHINA
| | - Yiming Nie
- Shandong University School of Medicine: Shandong University Cheeloo College of Medicine School of Pharmaceutical Sciences CHINA
| | - Qi Lu
- Tsinghua University Department of Chemical Engineering CHINA
| | - Bingjun Xu
- Peking University College of Chemistry and Molecular Engineering 202 Chengfu Road, Haidian District 100871 Beijing CHINA
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5
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Chen Y, Compton R. A Calibration-Free pH Sensor Using an In-Situ Modified Ir Electrode for Bespoke Application in Seawater. SENSORS 2022; 22:s22093286. [PMID: 35590977 PMCID: PMC9102169 DOI: 10.3390/s22093286] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Revised: 04/13/2022] [Accepted: 04/13/2022] [Indexed: 02/04/2023]
Abstract
A bespoke calibration-free pH sensor using an in situ modified Ir electrode for applications in seawater is reported. The electrochemical behaviour of an iridium wire in air-saturated synthetic seawater was studied and the formation of pH-sensitive surface layers was observed that featured three pH-sensitive redox couples, Ir(III/IV), IrOxOI−/IrOxOII−H, and Hupd/H+, where Hupd is adsorbed hydrogen deposited at underpotential conditions. The amperometric properties of the electrochemically activated Ir wire were investigated using linear sweep voltammetry first, followed, second, by square wave voltammetry with the formation conditions in seawater for the optimal pH sensitivity of the redox couples identified. The sensor was designed to be calibration-free by measuring the “super-Nernstian” response, in excess of ca 60 mV per pH unit, of Ir(III/IV) relative to the less sensitive upd H oxidation signal with the pH reported on the total pH scale. The pH dependency of the optimised sensor was 70.1 ± 1.4 mV per pH unit at 25 °C, showing a super-Nernstian response of high sensitivity.
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Affiliation(s)
| | - Richard Compton
- Correspondence: ; Tel.: +44-(0)-1865-275957; Fax: +44-(0)-1865-275-410-1
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6
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Wu J, Li J, Li Y, Ma X, Zhang W, Hao Y, Cai W, Liu Z, Gong M. Steering the Glycerol Electro‐Reforming Selectivity via Cation–Intermediate Interactions. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202113362] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Jianxiang Wu
- Department of Chemistry Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials Fudan University Shanghai 200438 P. R. China
| | - Jili Li
- Department of Chemistry Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials Fudan University Shanghai 200438 P. R. China
| | - Yefei Li
- Department of Chemistry Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials Fudan University Shanghai 200438 P. R. China
- Key Laboratory of Computational Physical Science Fudan University Shanghai 200438 P. R. China
| | - Xian‐Yin Ma
- Department of Chemistry Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials Fudan University Shanghai 200438 P. R. China
| | - Wei‐Yi Zhang
- Department of Chemistry Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials Fudan University Shanghai 200438 P. R. China
| | - Yaming Hao
- Department of Chemistry Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials Fudan University Shanghai 200438 P. R. China
| | - Wen‐Bin Cai
- Department of Chemistry Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials Fudan University Shanghai 200438 P. R. China
| | - Zhi‐Pan Liu
- Department of Chemistry Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials Fudan University Shanghai 200438 P. R. China
- Key Laboratory of Computational Physical Science Fudan University Shanghai 200438 P. R. China
| | - Ming Gong
- Department of Chemistry Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials Fudan University Shanghai 200438 P. R. China
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7
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Vijay AK, Meyerstein D, Marks V, Albo Y. Reaction of H 2 with polyoxometalate supported Rhodium(0) and Iridium(0) nanoparticles in aqueous suspensions: a kinetic study. NEW J CHEM 2022. [DOI: 10.1039/d2nj02253b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The mechanism of the reaction between Rh0 and Ir0 NPs with H2 was measured in the absence of an electrical bias via monitoring the catalytic reduction of PW12O403− and it was compared to the previous results of Pt0 NPs.
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Affiliation(s)
- Aswin Kottapurath Vijay
- Department of Chemical Science and The Radical Research Center, Ariel University, Ariel, Israel
- Department of Chemistry Ben-Gurion University, Beer-Sheva, Israel
| | - Dan Meyerstein
- Department of Chemical Science and The Radical Research Center, Ariel University, Ariel, Israel
- Department of Chemistry Ben-Gurion University, Beer-Sheva, Israel
| | - Vered Marks
- Department of Chemical Science Ariel University, Ariel, Israel
| | - Yael Albo
- Department of Chemical Engineering and The Radical Research Center Ariel University, Ariel, Israel
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8
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Wu J, Li J, Li Y, Ma XY, Zhang WY, Hao Y, Cai WB, Liu Z, Gong M. Steering the Glycerol Electro-Reforming Selectivity via Cation-Intermediate Interactions. Angew Chem Int Ed Engl 2021; 61:e202113362. [PMID: 34957665 DOI: 10.1002/anie.202113362] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2021] [Indexed: 11/11/2022]
Abstract
Electro-reforming of renewable biomass resources is an alternative technology for sustainable pure H2 production. Herein, we discovered an unconventional cation effect on the concurrent formate and H2 production via glycerol electro-reforming. In stark contrast to the cation effect via forming the double layers in cathodic reactions, the presence of residual cations at the anode were discovered to interact with the glycerol oxidation intermediates to steer its product selectivity. Through a combination of product analysis, transient kinetics, crown ether trapping experiments, in situ IRRAS spectroscopy and DFT calculation, the aldehyde intermediates were discovered to be stabilized by the Li+ cations to favor the non-oxidative C-C cleavage for formate production. The maximal formate efficiency could reach 81.3% under ~ 60 mA/cm2 in LiOH. This work emphasizes the significance of engineering the microenvironment at the electrode-electrolyte interface for efficient electrolytic processes.
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Affiliation(s)
- Jianxiang Wu
- Fudan University, Department of Chemistry, CHINA
| | - Jili Li
- Fudan University, Department of Chemistry, CHINA
| | - Yefei Li
- Fudan University, Department of Chemistry, CHINA
| | - Xian-Yin Ma
- Fudan University, Department of Chemistry, CHINA
| | - Wei-Yi Zhang
- Fudan University, Department of Chemistry, CHINA
| | - Yaming Hao
- Fudan University, Department of Chemistry, CHINA
| | - Wen-Bin Cai
- Fudan University, Department of Chemistry, CHINA
| | - Zhipan Liu
- Fudan University, Department of Chemistry, CHINA
| | - Ming Gong
- Fudan University, Chemistry, No.2005, Songhu Rd., 200438, Shanghai, CHINA
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9
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Dieckhöfer S, Öhl D, Junqueira JRC, Quast T, Turek T, Schuhmann W. Probing the Local Reaction Environment During High Turnover Carbon Dioxide Reduction with Ag-Based Gas Diffusion Electrodes. Chemistry 2021; 27:5906-5912. [PMID: 33527522 PMCID: PMC8048634 DOI: 10.1002/chem.202100387] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2021] [Indexed: 01/03/2023]
Abstract
Discerning the influence of electrochemical reactions on the electrode microenvironment is an unavoidable topic for electrochemical reactions that involve the production of OH− and the consumption of water. That is particularly true for the carbon dioxide reduction reaction (CO2RR), which together with the competing hydrogen evolution reaction (HER) exert changes in the local OH− and H2O activity that in turn can possibly affect activity, stability, and selectivity of the CO2RR. We determine the local OH− and H2O activity in close proximity to a CO2‐converting Ag‐based gas diffusion electrode (GDE) with product analysis using gas chromatography. A Pt nanosensor is positioned in the vicinity of the working GDE using shear‐force‐based scanning electrochemical microscopy (SECM) approach curves, which allows monitoring changes invoked by reactions proceeding within an otherwise inaccessible porous GDE by potentiodynamic measurements at the Pt‐tip nanosensor. We show that high turnover HER/CO2RR at a GDE lead to modulations of the alkalinity of the local electrolyte, that resemble a 16 m KOH solution, variations that are in turn linked to the reaction selectivity.
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Affiliation(s)
- Stefan Dieckhöfer
- Analytical Chemistry-Center for Electrochemical Sciences (CES), Faculty of Chemistry and Biochemistry, Ruhr University Bochum, Universitätsstr. 150, 44780, Bochum, Germany
| | - Denis Öhl
- Analytical Chemistry-Center for Electrochemical Sciences (CES), Faculty of Chemistry and Biochemistry, Ruhr University Bochum, Universitätsstr. 150, 44780, Bochum, Germany
| | - João R C Junqueira
- Analytical Chemistry-Center for Electrochemical Sciences (CES), Faculty of Chemistry and Biochemistry, Ruhr University Bochum, Universitätsstr. 150, 44780, Bochum, Germany
| | - Thomas Quast
- Analytical Chemistry-Center for Electrochemical Sciences (CES), Faculty of Chemistry and Biochemistry, Ruhr University Bochum, Universitätsstr. 150, 44780, Bochum, Germany
| | - Thomas Turek
- Institute of Chemical and Electrochemical Process Engineering, Clausthal University of Technology, Leibnizstr 17, 38678, Clausthal-Zellerfeld, Germany
| | - Wolfgang Schuhmann
- Analytical Chemistry-Center for Electrochemical Sciences (CES), Faculty of Chemistry and Biochemistry, Ruhr University Bochum, Universitätsstr. 150, 44780, Bochum, Germany
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10
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Shen LF, Lu BA, Li YY, Liu J, Huang-Fu ZC, Peng H, Ye JY, Qu XM, Zhang JM, Li G, Cai WB, Jiang YX, Sun SG. Interfacial Structure of Water as a New Descriptor of the Hydrogen Evolution Reaction. Angew Chem Int Ed Engl 2020; 59:22397-22402. [PMID: 32893447 DOI: 10.1002/anie.202007567] [Citation(s) in RCA: 59] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Indexed: 11/12/2022]
Abstract
Driven by the persisting poor understanding of the sluggish kinetics of the hydrogen evolution reaction (HER) on Pt in alkaline media, a direct correlation of the interfacial water structure and activity is still yet to be established. Herein, using Pt and Pt-Ni nanoparticles we first demonstrate a strong dependence of the proton donor structure on the HER activity and pH. The structure of the first layer changes from the proton acceptors to the donors with increasing pH. In the base, the reactivity of the interfacial water varied its structure, and the activation energies of water dissociation increased in the sequence: the dangling O-H bonds < the trihedrally coordinated water < the tetrahedrally coordinated water. Moreover, optimizing the adsorption of H and OH intermediates can re-orientate the interfacial water molecules with their H atoms pointing towards the electrode surface, thereby enhancing the kinetics of HER. Our results clarified the dynamic role of the water structure at the electrode-electrolyte interface during HER and the design of highly efficient HER catalysts.
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Affiliation(s)
- Lin-Fan Shen
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, PR China
| | - Bang-An Lu
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, PR China
| | - Yu-Yang Li
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, PR China
| | - Jia Liu
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, PR China
| | - Zhi-Chao Huang-Fu
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, PR China
| | - Hao Peng
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, PR China
| | - Jin-Yu Ye
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, PR China
| | - Xi-Ming Qu
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, PR China
| | - Jun-Ming Zhang
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, PR China
| | - Guang Li
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, PR China
| | - Wen-Bin Cai
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry, Fudan University, Shanghai, 200433, China
| | - Yan-Xia Jiang
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, PR China
| | - Shi-Gang Sun
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, PR China
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11
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Shen L, Lu B, Li Y, Liu J, Huang‐fu Z, Peng H, Ye J, Qu X, Zhang J, Li G, Cai W, Jiang Y, Sun S. Interfacial Structure of Water as a New Descriptor of the Hydrogen Evolution Reaction. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202007567] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Lin‐fan Shen
- State Key Laboratory of Physical Chemistry of Solid Surfaces Department of Chemistry College of Chemistry and Chemical Engineering Xiamen University Xiamen 361005 PR China
| | - Bang‐an Lu
- State Key Laboratory of Physical Chemistry of Solid Surfaces Department of Chemistry College of Chemistry and Chemical Engineering Xiamen University Xiamen 361005 PR China
| | - Yu‐yang Li
- State Key Laboratory of Physical Chemistry of Solid Surfaces Department of Chemistry College of Chemistry and Chemical Engineering Xiamen University Xiamen 361005 PR China
| | - Jia Liu
- State Key Laboratory of Physical Chemistry of Solid Surfaces Department of Chemistry College of Chemistry and Chemical Engineering Xiamen University Xiamen 361005 PR China
| | - Zhi‐chao Huang‐fu
- State Key Laboratory of Physical Chemistry of Solid Surfaces Department of Chemistry College of Chemistry and Chemical Engineering Xiamen University Xiamen 361005 PR China
| | - Hao Peng
- State Key Laboratory of Physical Chemistry of Solid Surfaces Department of Chemistry College of Chemistry and Chemical Engineering Xiamen University Xiamen 361005 PR China
| | - Jin‐yu Ye
- State Key Laboratory of Physical Chemistry of Solid Surfaces Department of Chemistry College of Chemistry and Chemical Engineering Xiamen University Xiamen 361005 PR China
| | - Xi‐ming Qu
- State Key Laboratory of Physical Chemistry of Solid Surfaces Department of Chemistry College of Chemistry and Chemical Engineering Xiamen University Xiamen 361005 PR China
| | - Jun‐ming Zhang
- State Key Laboratory of Physical Chemistry of Solid Surfaces Department of Chemistry College of Chemistry and Chemical Engineering Xiamen University Xiamen 361005 PR China
| | - Guang Li
- State Key Laboratory of Physical Chemistry of Solid Surfaces Department of Chemistry College of Chemistry and Chemical Engineering Xiamen University Xiamen 361005 PR China
| | - Wen‐bin Cai
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials Collaborative Innovation Center of Chemistry for Energy Materials Department of Chemistry Fudan University Shanghai 200433 China
| | - Yan‐xia Jiang
- State Key Laboratory of Physical Chemistry of Solid Surfaces Department of Chemistry College of Chemistry and Chemical Engineering Xiamen University Xiamen 361005 PR China
| | - Shi‐gang Sun
- State Key Laboratory of Physical Chemistry of Solid Surfaces Department of Chemistry College of Chemistry and Chemical Engineering Xiamen University Xiamen 361005 PR China
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12
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Rebollar L, Intikhab S, Snyder JD, Tang MH. Kinetic Isotope Effects Quantify pH-Sensitive Water Dynamics at the Pt Electrode Interface. J Phys Chem Lett 2020; 11:2308-2313. [PMID: 32125855 DOI: 10.1021/acs.jpclett.0c00185] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The pH-dependent kinetics of the hydrogen oxidation and evolution reactions (HERs and HORs) remain a fundamental conundrum in modern electrochemistry. Recent efforts have focused on the impact of the interfacial water network on the reaction kinetics. In this work, we quantify the importance of interfacial water dynamics on the overall hydrogen reaction kinetics with kinetic isotope effect (KIE) voltammetry experiments on single-crystal Pt(111) and Pt(110). Our results find a surface-sensitive KIE for both the HER and the HOR that is measurable in base but not in acid. Remarkably, the HOR in KOD on Pt(111) yields a KIE of up to 3.4 at moderate overpotentials, greater than any expected secondary KIE values, yet the HOR in DClO4 yields no measurable KIE. These results provide direct evidence that solvent dynamics play a crucial role in the alkaline but not in the acidic hydrogen reactions, thus reinforcing the importance of "beyond adsorption" phenomena in modern electrocatalysis.
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Affiliation(s)
- Luis Rebollar
- Department of Chemical and Biological Engineering, Drexel University, Philadelphia, Pennsylvania 19104, United States
| | - Saad Intikhab
- Department of Chemical and Biological Engineering, Drexel University, Philadelphia, Pennsylvania 19104, United States
| | - Joshua D Snyder
- Department of Chemical and Biological Engineering, Drexel University, Philadelphia, Pennsylvania 19104, United States
| | - Maureen H Tang
- Department of Chemical and Biological Engineering, Drexel University, Philadelphia, Pennsylvania 19104, United States
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