1
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Feidenhans’l A, Regmi YN, Wei C, Xia D, Kibsgaard J, King LA. Precious Metal Free Hydrogen Evolution Catalyst Design and Application. Chem Rev 2024; 124:5617-5667. [PMID: 38661498 PMCID: PMC11082907 DOI: 10.1021/acs.chemrev.3c00712] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2023] [Revised: 02/27/2024] [Accepted: 02/28/2024] [Indexed: 04/26/2024]
Abstract
The quest to identify precious metal free hydrogen evolution reaction catalysts has received unprecedented attention in the past decade. In this Review, we focus our attention to recent developments in precious metal free hydrogen evolution reactions in acidic and alkaline electrolyte owing to their relevance to commercial and near-commercial low-temperature electrolyzers. We provide a detailed review and critical analysis of catalyst activity and stability performance measurements and metrics commonly deployed in the literature, as well as review best practices for experimental measurements (both in half-cell three-electrode configurations and in two-electrode device testing). In particular, we discuss the transition from laboratory-scale hydrogen evolution reaction (HER) catalyst measurements to those in single cells, which is a critical aspect crucial for scaling up from laboratory to industrial settings but often overlooked. Furthermore, we review the numerous catalyst design strategies deployed across the precious metal free HER literature. Subsequently, we showcase some of the most commonly investigated families of precious metal free HER catalysts; molybdenum disulfide-based, transition metal phosphides, and transition metal carbides for acidic electrolyte; nickel molybdenum and transition metal phosphides for alkaline. This includes a comprehensive analysis comparing the HER activity between several families of materials highlighting the recent stagnation with regards to enhancing the intrinsic activity of precious metal free hydrogen evolution reaction catalysts. Finally, we summarize future directions and provide recommendations for the field in this area of electrocatalysis.
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Affiliation(s)
| | - Yagya N. Regmi
- Faculty
of Science and Engineering, Manchester Metropolitan
University, Manchester M1 5GD, U.K.
- Manchester
Fuel Cell Innovation Centre, Manchester
Metropolitan University, Manchester M1 5GD, U.K.
| | - Chao Wei
- Department
of Physics, Technical University of Denmark, 2800 Kongens Lyngby, Denmark
| | - Dong Xia
- Faculty
of Science and Engineering, Manchester Metropolitan
University, Manchester M1 5GD, U.K.
- Manchester
Fuel Cell Innovation Centre, Manchester
Metropolitan University, Manchester M1 5GD, U.K.
| | - Jakob Kibsgaard
- Department
of Physics, Technical University of Denmark, 2800 Kongens Lyngby, Denmark
| | - Laurie A. King
- Faculty
of Science and Engineering, Manchester Metropolitan
University, Manchester M1 5GD, U.K.
- Manchester
Fuel Cell Innovation Centre, Manchester
Metropolitan University, Manchester M1 5GD, U.K.
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2
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Fraga Alvarez DV, Lin Z, Shi Z, Baxter AF, Wang ED, Kuvar D, Mahmud N, El-Naas MH, Abruña HD, Muller DA, Esposito DV. Condensed Layer Deposition of Nanoscopic TiO 2 Overlayers on High-Surface-Area Electrocatalysts. ACS APPLIED MATERIALS & INTERFACES 2024. [PMID: 38688003 DOI: 10.1021/acsami.3c18366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2024]
Abstract
Encapsulating an electrocatalytic material with a semipermeable, nanoscopic oxide overlayer offers a promising approach to enhancing its stability, activity, and/or selectivity compared to an unencapsulated electrocatalyst. However, applying nanoscopic oxide encapsulation layers to high-surface-area electrodes such as nanoparticle-supported porous electrodes is a challenging task. This study demonstrates that the recently developed condensed layer deposition (CLD) method can be used for depositing nanoscopic (sub-10 nm thick) titanium dioxide (TiO2) overlayers onto high-surface-area platinized carbon foam electrodes. Characterization of the overlayers by transmission electron microscopy (TEM) and electron energy loss spectroscopy (EELS) showed that the films are amorphous, while X-ray photoelectron spectroscopy confirmed that they exhibit TiO2 stoichiometry. Electrodes were also characterized by hydrogen underpotential deposition (Hupd) and carbon monoxide (CO) stripping, demonstrating that the Pt electrocatalysts remain electrochemically active after encapsulation. Additionally, copper underpotential deposition (Cuupd) measurements revealed that TiO2 overlayers are effective at blocking Cu2+ from reaching the TiO2/Pt buried interface and were used to estimate that between 43 and 98% of Pt surface sites were encapsulated. Overall, this study shows that CLD is a promising approach for depositing nanoscopic protective overlayers on high-surface-area electrodes.
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Affiliation(s)
| | | | | | | | | | | | - Nafis Mahmud
- Gas Processing Center, Qatar University, P.O. Box 2713, Al Tarfa Street, Doha , Qatar
| | - Muftah H El-Naas
- Gas Processing Center, Qatar University, P.O. Box 2713, Al Tarfa Street, Doha , Qatar
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3
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Frei H. Controlled electron transfer by molecular wires embedded in ultrathin insulating membranes for driving redox catalysis. PHOTOSYNTHESIS RESEARCH 2023:10.1007/s11120-023-01061-7. [PMID: 38108928 DOI: 10.1007/s11120-023-01061-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Accepted: 11/09/2023] [Indexed: 12/19/2023]
Abstract
Organic bilayers or amorphous silica films of a few nanometer thickness featuring embedded molecular wires offer opportunities for chemically separating while at the same time electronically connecting photo- or electrocatalytic components. Such ultrathin membranes enable the integration of components for which direct coupling is not sufficiently efficient or stable. Photoelectrocatalytic systems for the generation or utilization of renewable energy are among the most prominent ones for which ultrathin separation layers open up new approaches for component integration for improving efficiency. Recent advances in the assembly and spectroscopic, microscopic, and photoelectrochemical characterization have enabled the systematic optimization of the structure, energetics, and density of embedded molecular wires for maximum charge transfer efficiency. The progress enables interfacial designs for the nanoscale integration of the incompatible oxidation and reduction catalysis environments of artificial photosystems and of microbial (or biomolecular)-abiotic systems for renewable energy.
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Affiliation(s)
- Heinz Frei
- Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, University of California, Berkeley, CA, 94720, USA.
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4
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Aydin F, Andrade MFC, Stinson RS, Zagalskaya A, Schwalbe-Koda D, Chen Z, Sharma S, Maiti A, Esposito DV, Ardo S, Pham TA, Ogitsu T. Mechanistic Insights on Permeation of Water over Iron Cations in Nanoporous Silicon Oxide Films for Selective H 2 and O 2 Evolution. ACS APPLIED MATERIALS & INTERFACES 2023; 15:17814-17824. [PMID: 36975208 DOI: 10.1021/acsami.2c22865] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Electrocatalysts encapsulated by an ultrathin and semipermeable oxide layer offer a promising avenue for efficient, selective, and cost-effective production of hydrogen through photoelectrochemical water splitting. This architecture is especially attractive for Z-scheme water splitting, for which a nanoporous oxide film can be leveraged to mitigate undesired, yet kinetically facile, reactions involving redox shuttles, such as aqueous iron cations, by limiting transport of these species to catalytically active sites. In this work, molecular dynamics simulations were combined with electrochemical measurements to provide a mechanistic understanding of permeation of water and Fe(III)/Fe(II) redox shuttles through nanoporous SiO2 films. It is shown that even for SiO2 pores with a width as small as 0.8 nm, water does not experience any energy barrier for permeating into the pores due to a favorable interaction with hydrophilic silanol groups on the oxide surface. In contrast, permeation of Fe(III) and Fe(II) into microporous SiO2 pores is limited due to high energy barriers, which stem from a combination of distortion and dehydration of the second and third ion solvation shells. Our simulations and experimental results show that SiO2 coatings can effectively mitigate undesired Fe(III)/Fe(II) redox reactions at underlying electrodes by attenuating permeation of iron cations, while allowing water to permeate and thus participate in water splitting reactions. In a broader context, our study demonstrates that selectivity of solvated cations can be manipulated by controlling the pore size and surface chemistry of oxide films.
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Affiliation(s)
- Fikret Aydin
- Materials Science Division, Lawrence Livermore National Laboratory, Livermore, California 94550, United States
| | - Marcos F Calegari Andrade
- Materials Science Division, Lawrence Livermore National Laboratory, Livermore, California 94550, United States
| | - Robert S Stinson
- Chemical Engineering Department, Columbia Electrochemical Energy Center, Columbia University, New York, New York 10027, United States
| | - Alexandra Zagalskaya
- Materials Science Division, Lawrence Livermore National Laboratory, Livermore, California 94550, United States
| | - Daniel Schwalbe-Koda
- Materials Science Division, Lawrence Livermore National Laboratory, Livermore, California 94550, United States
| | - Zejie Chen
- Department of Chemistry, University of California, Irvine, California 92697, United States
| | - Shubham Sharma
- Materials Science Division, Lawrence Livermore National Laboratory, Livermore, California 94550, United States
| | - Amitesh Maiti
- Materials Science Division, Lawrence Livermore National Laboratory, Livermore, California 94550, United States
| | - Daniel V Esposito
- Chemical Engineering Department, Columbia Electrochemical Energy Center, Columbia University, New York, New York 10027, United States
| | - Shane Ardo
- Department of Chemistry, University of California, Irvine, California 92697, United States
- Department of Materials Science and Engineering, University of California, Irvine, California 92697, United States
- Department of Chemical and Biomolecular Engineering, University of California, Irvine, California 92697, United States
| | - Tuan Anh Pham
- Materials Science Division, Lawrence Livermore National Laboratory, Livermore, California 94550, United States
- Laboratory for Energy Applications for the Future, Lawrence Livermore National Laboratory, Livermore, California 94550, United States
| | - Tadashi Ogitsu
- Materials Science Division, Lawrence Livermore National Laboratory, Livermore, California 94550, United States
- Laboratory for Energy Applications for the Future, Lawrence Livermore National Laboratory, Livermore, California 94550, United States
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5
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Stinson WDH, Brayton KM, Ardo S, Talin AA, Esposito DV. Quantifying the Influence of Defects on Selectivity of Electrodes Encapsulated by Nanoscopic Silicon Oxide Overlayers. ACS APPLIED MATERIALS & INTERFACES 2022; 14:55480-55490. [PMID: 36473158 DOI: 10.1021/acsami.2c13646] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Encapsulation of electrocatalysts and photocatalysts with semipermeable nanoscopic oxide overlayers that exhibit selective transport properties is an attractive approach to achieve high redox selectivity. However, defects within the overlayers─such as pinholes, cracks, or particle inclusions─may facilitate local high rates of parasitic reactions by creating pathways for facile transport of undesired reactants to exposed active sites. Scanning electrochemical microscopy (SECM) is an attractive method to determine the influence of defects on macroscopic performance metrics thanks to its ability to measure the relative rates of competing electrochemical reactions with high spatial resolution over the electrode. Here, we report the use of SECM to determine the influence of overlayer defects on the selectivity of silicon oxide (SiOx) encapsulated platinum thin-film electrocatalysts operated under conditions where two competing reactions─the hydrogen evolution and Fe(III) reduction reactions─can occur. After an SECM methodology is described to determine spatially resolved selectivity, representative selectivity maps are correlated with the location of defects that are characterized by optical, electron, and atomic force microscopies. This analysis reveals that certain types of defects in the oxide overlayer are responsible for ∼60-90% of the partial current density toward the undesired Fe(III) reduction reaction. By correcting for defect contributions to Fe(III) reduction rates, true Fe(III) permeability values for the SiOx overlayers were determined to be over an order of magnitude lower than permeabilities determined from analyses that ignore the presence of defects. Finally, different types of defects were studied revealing that defect morphology can have varying influence on both redox selectivity and calculated permeability. This work highlights the need for spatially resolved measurements to evaluate the performance of oxide-encapsulated catalysts and understand their performance limits.
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Affiliation(s)
- William D H Stinson
- Department of Chemical Engineering, Columbia Electrochemical Engineering Center, Lenfest Center for Sustainable Energy, Columbia University in the City of New York, New York, New York10027, United States
| | - Kelly M Brayton
- Department of Chemical Engineering, Columbia Electrochemical Engineering Center, Lenfest Center for Sustainable Energy, Columbia University in the City of New York, New York, New York10027, United States
| | - Shane Ardo
- Department of Chemistry, Department of Chemical and Biomolecular Engineering, and Department of Materials Science and Engineering, University of California Irvine, Irvine, California92697, United States
| | - A Alec Talin
- Materials Physics Department, Sandia National Laboratories, Livermore, California94550, United States
| | - Daniel V Esposito
- Department of Chemical Engineering, Columbia Electrochemical Engineering Center, Lenfest Center for Sustainable Energy, Columbia University in the City of New York, New York, New York10027, United States
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6
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Vos J, Bhardwaj AA, Jeremiasse AW, Esposito DV, Koper MTM. Probing the Effects of Electrode Composition and Morphology on the Effectiveness of Silicon Oxide Overlayers to Enhance Selective Oxygen Evolution in the Presence of Chloride Ions. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2022; 126:20314-20325. [PMID: 36523487 PMCID: PMC9743210 DOI: 10.1021/acs.jpcc.2c07116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Revised: 11/09/2022] [Indexed: 06/17/2023]
Abstract
Seawater electrolysis offers significant logistical advantages over freshwater electrolysis but suffers from a fundamental selectivity problem at the anode. To prevent the evolution of toxic chlorine alongside the evolution of oxygen, a promising approach is the use of electrochemically inert overlayers. Such thin films can exert a perm-selective effect, allowing the transport of water and oxygen between the bulk electrolyte and the electrocatalytic buried interface while suppressing the transport of chloride ions. In this work, we investigate thin (5-20 nm) overlayer films composed of amorphous silicon oxide (SiO x ) and their application to suppressing the chlorine evolution reaction (CER) in favor of the oxygen evolution reaction (OER) during acidic saltwater electrolysis on three different types of electrodes. While SiO x overlayers are seen to be an effective barrier against the CER on well-defined, smooth Pt thin films, decreasing the CER activity roughly 20-fold, this ability has not been previously explored on Ir-based catalysts with a higher surface area relevant to industrial applications. On amorphous iridium oxide electrodes, the selectivity toward the CER versus the OER was marginally reduced from ∼98 to ∼94%, which was attributed to the higher abundance of defects in overlayers deposited on the rougher electrode. On the other hand, Ir-based anodes consisting of thick mixed metal oxide films supported on Ti showed a significant decrease in CER selectivity, from ∼100 to ∼50%, although this came at the cost of reduced activity toward the OER. These results show that the morphology and composition of the underlying electrode play important roles in the effectiveness of the selective overlayers and provide guidance for further development of high-surface-area OER-selective anodes.
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Affiliation(s)
- Johannes
G. Vos
- Leiden Institute
of Chemistry, Leiden University, PO Box 9502, 2300 RA Leiden, The Netherlands
- Magneto
Special Anodes (an Evoqua brand), Calandstraat 109, 3125 BA Schiedam, The Netherlands
| | - Amar A. Bhardwaj
- Department of Chemical Engineering, Columbia Electrochemical Energy
Center, Lenfest Center for Sustainable Energy, Columbia University in the City of New York, 500 W. 120th Street, New York, New York 10027, United States
| | - Adriaan W. Jeremiasse
- Magneto
Special Anodes (an Evoqua brand), Calandstraat 109, 3125 BA Schiedam, The Netherlands
| | - Daniel V. Esposito
- Department of Chemical Engineering, Columbia Electrochemical Energy
Center, Lenfest Center for Sustainable Energy, Columbia University in the City of New York, 500 W. 120th Street, New York, New York 10027, United States
| | - Marc T. M. Koper
- Leiden Institute
of Chemistry, Leiden University, PO Box 9502, 2300 RA Leiden, The Netherlands
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7
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Ma K, Cao L, Luo F, Zhou H, Liu D, Luo B, Xu Y, Cui J, Zhao X. Highly oriented platinum/iridium thin films for high-temperature thermocouples with superior precision. Phys Chem Chem Phys 2022; 24:6163-6168. [PMID: 35226019 DOI: 10.1039/d1cp05196b] [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 long-term precise high-temperature measurement of thin-film thermocouples (TFTCs) has attracted attention due to the capability of instantaneous temperature detection. However, related technologies have seen slow development, and there is no one standard TFTC yet. Here, we focus on a new strategy of reducing alloys for the easy preparation and performance enhancement of TFTCs via nanostructure and interface design. To this end, we fabricated a platinum/iridium (Pt/Ir) pure-element TFTC with a well matched interface and few defects, which demonstrated excellent long-term service stability over a high-temperature range. The corresponding polynomial fitting coefficients were ≥0.99999, indicating the accurate acquisition of temperature data. A reduced deviation (<0.21%) between three calibration cycles was obtained over a wide temperature range of 300 °C to 1000 °C, which is better than the maximum precision of a standard wire thermocouple. Superior properties are achieved because of the resulting fewer defects in the Pt and Ir thin films with highly preferential orientation along the (111) plane. The results indicate that our Pt/Ir TFTCs have significant potential for application in many domains such as thermal detection, microelectronics and aero-engines.
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Affiliation(s)
- Kexin Ma
- Key Laboratory of the Ministry of Education for Optoelectronic Measurement Technology and Instrument, Beijing Information Science and Technology University, Beijing, 100192, China. .,Beijing Institute of Aeronautical Materials, Aero Engine Corporation of China, Beijing, 100095, China.
| | - Lili Cao
- Key Laboratory of the Ministry of Education for Optoelectronic Measurement Technology and Instrument, Beijing Information Science and Technology University, Beijing, 100192, China.
| | - Fei Luo
- Beijing Institute of Aeronautical Materials, Aero Engine Corporation of China, Beijing, 100095, China.
| | - Haitao Zhou
- Beijing Institute of Aeronautical Materials, Aero Engine Corporation of China, Beijing, 100095, China.
| | - Dabo Liu
- Beijing Institute of Aeronautical Materials, Aero Engine Corporation of China, Beijing, 100095, China.
| | - Bingwei Luo
- Beijing Institute of Aeronautical Materials, Aero Engine Corporation of China, Beijing, 100095, China.
| | - Yi Xu
- AECC Sichuan Gas Turbine Establishment, Mianyang 621000, China.,Research Institute Aero-Engine, Beihang University, 100190, China
| | - Jinting Cui
- AECC Sichuan Gas Turbine Establishment, Mianyang 621000, China
| | - Xiaohui Zhao
- State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, China
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8
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Liu Q, Qin W, Yan Z, Gao J, Wang E. Porous Ni(OH)2 permselective membrane to identify the mechanism of hydrogen evolution reaction in buffered solution. Electrochim Acta 2022. [DOI: 10.1016/j.electacta.2021.139444] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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9
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Liu Q, Ranocchiari M, van Bokhoven JA. Catalyst overcoating engineering towards high-performance electrocatalysis. Chem Soc Rev 2021; 51:188-236. [PMID: 34870651 DOI: 10.1039/d1cs00270h] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Clean and sustainable energy needs the development of advanced heterogeneous catalysts as they are of vital importance for electrochemical transformation reactions in renewable energy conversion and storage devices. Advances in nanoscience and material chemistry have afforded great opportunities for the design and optimization of nanostructured electrocatalysts with high efficiency and practical durability. In this review article, we specifically emphasize the synthetic methodologies for the versatile surface overcoating engineering reported to date for optimal electrocatalysts. We discuss the recent progress in the development of surface overcoating-derived electrocatalysts potentially applied in polymer electrolyte fuel cells and water electrolyzers by correlating catalyst intrinsic structures with electrocatalytic properties. Finally, we present the opportunities and perspectives of surface overcoating engineering for the design of advanced (electro)catalysts and their deep exploitation in a broad scope of applications.
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Affiliation(s)
- Qiang Liu
- Institute for Chemical and Bioengineering, ETH Zurich, Vladimir Prelog Weg 1, 8093 Zurich, Switzerland. .,Laboratory for Catalysis and Sustainable Chemistry, Paul Scherrer Institut, 5232 Villigen PSI, Switzerland
| | - Marco Ranocchiari
- Laboratory for Catalysis and Sustainable Chemistry, Paul Scherrer Institut, 5232 Villigen PSI, Switzerland
| | - Jeroen A van Bokhoven
- Institute for Chemical and Bioengineering, ETH Zurich, Vladimir Prelog Weg 1, 8093 Zurich, Switzerland. .,Laboratory for Catalysis and Sustainable Chemistry, Paul Scherrer Institut, 5232 Villigen PSI, Switzerland
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10
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Shih AJ, Arulmozhi N, Koper MTM. Electrocatalysis under Cover: Enhanced Hydrogen Evolution via Defective Graphene-Covered Pt(111). ACS Catal 2021. [DOI: 10.1021/acscatal.1c02145] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Arthur J. Shih
- Leiden Institute of Chemistry, Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands
| | - Nakkiran Arulmozhi
- Leiden Institute of Chemistry, Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands
| | - Marc T. M. Koper
- Leiden Institute of Chemistry, Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands
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11
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Nishimoto T, Shinagawa T, Naito T, Takanabe K. Delivering the Full Potential of Oxygen Evolving Electrocatalyst by Conditioning Electrolytes at Near-Neutral pH. CHEMSUSCHEM 2021; 14:1554-1564. [PMID: 33481326 PMCID: PMC8048901 DOI: 10.1002/cssc.202002813] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Revised: 01/12/2021] [Indexed: 05/06/2023]
Abstract
This study reports on the impact of identity and compositions of buffer ions on oxygen evolution reaction (OER) performance at a wide range of pH levels using a model IrOx electrocatalyst. Rigorous microkinetic analysis employing kinetic isotope effects, Tafel analysis, and temperature dependence measurement was conducted to establish rate expression isolated from the diffusion contribution of buffer ions and solution resistance. It was found that the OER kinetics was facile with OH- oxidation compared to H2 O, the results of which were highlighted by mitigating over 200 mV overpotential in the presence of buffer to reach 10 mA cm-2 . This improvement was ascribed to the involvement of the kinetics of the local OH- supply by the buffering action. Further digesting the kinetic data at various buffer pKa and the solution bulk pH disclosed a trade-off between the exchange current density and the Tafel slope, indicating that the optimal electrolyte condition can be chosen at a different range of current density. This study provides a quantitative guideline for electrolyte engineering to maximize the intrinsic OER performance that electrocatalyst possesses especially at near-neutral pH.
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Affiliation(s)
- Takeshi Nishimoto
- Department of Chemical System Engineering, School of EngineeringThe University of Tokyo7-3-1 Hongo, Bunkyo-kuTokyoJapan
| | - Tatsuya Shinagawa
- Department of Chemical System Engineering, School of EngineeringThe University of Tokyo7-3-1 Hongo, Bunkyo-kuTokyoJapan
| | - Takahiro Naito
- Department of Chemical System Engineering, School of EngineeringThe University of Tokyo7-3-1 Hongo, Bunkyo-kuTokyoJapan
| | - Kazuhiro Takanabe
- Department of Chemical System Engineering, School of EngineeringThe University of Tokyo7-3-1 Hongo, Bunkyo-kuTokyoJapan
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12
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Cao H, Li Z, Xie Y, Xiao F, Wang H, Wang X, Pan K, Cabot A. Hierarchical CoP Nanostructures on Nickel Foam as Efficient Bifunctional Catalysts for Water Splitting. CHEMSUSCHEM 2021; 14:1094-1102. [PMID: 33369250 DOI: 10.1002/cssc.202002624] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Revised: 12/21/2020] [Indexed: 05/03/2023]
Abstract
A highly active and cheap catalyst is also key to hydrogen production by water splitting. However, most of the high-efficiency catalysts reported to date only are catalytically active for either the hydrogen evolution reaction (HER) or the oxygen evolution reaction (OER), which makes the development of multifunctional catalysts more meaningful. Here, for the first time, Co(CO3 )0.5 OH. 0.11 H2 O (CHCH) as precursor with different microstructures on the surface of nickel foam (NF) was obtained using a facile hydrothermal method. The CoP/NF catalyst was obtained after thermal phosphating that retained the microhierarchical structure of the precursor and greatly improved the catalytic performance, with a highly efficiency performance as HER and OER dual-functional catalyst. Density functional theory (DFT) calculations showed that the possible reason for the excellent performance of the CoP/NF layered structure is an increase in the number of of surface defects and an increased active surface area. The results reported in this paper show that CoP/NF, a layered bifunctional electrocatalyst, is a cost-effective and efficient water-splitting electrode. This finding can offer the opportunity for the commercial use of excess electric energy for large-scale water splitting hydrogen production.
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Affiliation(s)
- Hongshuai Cao
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, Harbin, 150080, P. R. China
| | - Zhibin Li
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, Harbin, 150080, P. R. China
| | - Ying Xie
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, Harbin, 150080, P. R. China
| | - Fang Xiao
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, Harbin, 150080, P. R. China
| | - Honglei Wang
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, Harbin, 150080, P. R. China
| | - Xiaoyan Wang
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, Harbin, 150080, P. R. China
| | - Kai Pan
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, Harbin, 150080, P. R. China
| | - Andreu Cabot
- Catalonia Institute for Energy Research (IREC), 08930, Sant Adrià de Besòs, Barcelona, Spain
- Institució Catalana de Recerca i Estudis Avançats, Pg. Lluís Companys 23S, 08010, Barcelona, Spain
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13
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Bhardwaj AA, Vos JG, Beatty MES, Baxter AF, Koper MTM, Yip NY, Esposito DV. Ultrathin Silicon Oxide Overlayers Enable Selective Oxygen Evolution from Acidic and Unbuffered pH-Neutral Seawater. ACS Catal 2021. [DOI: 10.1021/acscatal.0c04343] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Amar A. Bhardwaj
- Department of Chemical Engineering, Columbia Electrochemical Engineering Center, Lenfest Center for Sustainable Energy, Columbia University in the City of New York, 500 West 120th Street, New York, New York 10027, United States
| | - Johannes G. Vos
- Leiden Institute of Chemistry, Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands
| | - Marissa E. S. Beatty
- Department of Chemical Engineering, Columbia Electrochemical Engineering Center, Lenfest Center for Sustainable Energy, Columbia University in the City of New York, 500 West 120th Street, New York, New York 10027, United States
| | - Amanda F. Baxter
- Department of Chemical Engineering, Columbia Electrochemical Engineering Center, Lenfest Center for Sustainable Energy, Columbia University in the City of New York, 500 West 120th Street, New York, New York 10027, United States
| | - Marc T. M. Koper
- Leiden Institute of Chemistry, Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands
| | - Ngai Yin Yip
- Department of Earth and Environmental Engineering, Columbia Water Center, Columbia University in the City of New York, 500 West 120th Street, New York, New York 10027, United States
| | - Daniel V. Esposito
- Department of Chemical Engineering, Columbia Electrochemical Engineering Center, Lenfest Center for Sustainable Energy, Columbia University in the City of New York, 500 West 120th Street, New York, New York 10027, United States
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14
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Inoue G, Takenaka S. Design of Interfaces and Phase Interfaces on Cathode Catalysts for Polymer Electrolyte Fuel Cells. CHEM LETT 2021. [DOI: 10.1246/cl.200649] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Gen Inoue
- Department of Chemical Engineering, Faculty of Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Sakae Takenaka
- Faculty of Science and Engineering, Doshisha University, 1-3 Tatara-Miyakodani, Kyotanabe, Kyoto 610-0321, Japan
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15
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Qu J, Urban A. Potential and pH Dependence of the Buried Interface of Membrane-Coated Electrocatalysts. ACS APPLIED MATERIALS & INTERFACES 2020; 12:52125-52135. [PMID: 33158361 DOI: 10.1021/acsami.0c14435] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Semipermeable silica membranes are attractive as protective coatings for metal electrocatalysts such as platinum, but their impact on the catalytic properties has not been fully understood. Here, we develop a first-principles formalism to investigate how silica membranes interact with the surface of platinum metal electrocatalysts to develop a better understanding of the membrane-metal interplay. By generalizing the concept of Pourbaix diagrams to electrochemical solid-solid interfaces, we establish which bonds are formed between the SiO2 membrane and Pt(111) surface in aqueous electrolytes for different pH values and potential biases. We find that the membrane termination changes as a function of the pH and potential, which affects the adhesion strength and the energy requirements for partial membrane detachment, controlling the Pt surface area that is accessible for reactant species. The charge transfer between the Pt surface and SiO2 membrane is also pH- and potential-dependent and results in changes of the Pt surface d-band states, which are known to correlate with catalytic activity. Our analysis reveals the complex response of a buried interface to the electrochemical environment and identifies trends that are expected to apply also to other membrane-coated electrocatalysts.
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Affiliation(s)
- Jianzhou Qu
- Department of Chemical Engineering and Columbia Electrochemical Energy Center, Columbia University, New York, New York 10027-6623, United States
| | - Alexander Urban
- Department of Chemical Engineering and Columbia Electrochemical Energy Center, Columbia University, New York, New York 10027-6623, United States
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16
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An Analysis of Research on Membrane-Coated Electrodes in the 2001–2019 Period: Potential Application to CO2 Capture and Utilization. Catalysts 2020. [DOI: 10.3390/catal10111226] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The chemistry and electrochemistry basic fields have been active for the last two decades of the past century studying how the modification of the electrodes’ surface by coating with conductive thin films enhances their electrocatalytic activity and sensitivity. In light of the development of alternative sustainable ways of energy storage and carbon dioxide conversion by electrochemical reduction, these research studies are starting to jump into the 21st century to more applied fields such as chemical engineering, energy and environmental science, and engineering. The huge amount of literature on experimental works dealing with the development of CO2 electroreduction processes addresses electrocatalyst development and reactor configurations. Membranes can help with understanding and controlling the mass transport limitations of current electrodes as well as leading to novel reactor designs. The present work makes use of a bibliometric analysis directed to the papers published in the 21st century on membrane-coated electrodes and electrocatalysts to enhance the electrochemical reactor performance and their potential in the urgent issue of carbon dioxide capture and utilization.
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17
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Jin W, Chen J, Wu H, Zang N, Li Q, Cai W, Wu Z. Interface engineering of oxygen-vacancy-rich NiCo2O4/NiCoP heterostructure as an efficient bifunctional electrocatalyst for overall water splitting. Catal Sci Technol 2020. [DOI: 10.1039/d0cy01115k] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Inexpensive bifunctional electrocatalysts towards oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) is highly desirable from the perspective of energy conversion.
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Affiliation(s)
- Wei Jin
- School of Chemical and Material Engineering
- Jiangnan University
- Wuxi 214122
- China
| | - Jianping Chen
- School of Chemical and Material Engineering
- Jiangnan University
- Wuxi 214122
- China
| | - Hengbo Wu
- School of Chemical and Material Engineering
- Jiangnan University
- Wuxi 214122
- China
| | - Nan Zang
- School of Chemical and Material Engineering
- Jiangnan University
- Wuxi 214122
- China
| | - Qingwei Li
- Advanced Research Institute for Multidisciplinary Science
- Qilu University of Technology (Shandong Academy of Sciences)
- Jinan 250353
- P. R. China
| | - Weiquan Cai
- School of Chemistry and Chemical Engineering
- Guangzhou University
- Guangzhou 510006
- China
| | - Zexing Wu
- State Key Laboratory Base of Eco-chemical Engineering
- College of Chemistry and Molecular Engineering
- Qingdao University of Science & Technology
- Qingdao 266042
- PR China
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18
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Marcos‐Madrazo A, Casado‐Coterillo C, Irabien Á. Sustainable Membrane‐Coated Electrodes for CO
2
Electroreduction to Methanol in Alkaline Media. ChemElectroChem 2019. [DOI: 10.1002/celc.201901535] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Aitor Marcos‐Madrazo
- Department of Chemical and Biomolecular EngineeringUniversidad de Cantabria Av. Los Castros s/n 39005 Santander Spain
| | - Clara Casado‐Coterillo
- Department of Chemical and Biomolecular EngineeringUniversidad de Cantabria Av. Los Castros s/n 39005 Santander Spain
| | - Ángel Irabien
- Department of Chemical and Biomolecular EngineeringUniversidad de Cantabria Av. Los Castros s/n 39005 Santander Spain
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19
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Liu Y, Leung KY, Michaud SE, Soucy TL, McCrory CCL. Controlled Substrate Transport to Electrocatalyst Active Sites for Enhanced Selectivity in the Carbon Dioxide Reduction Reaction. COMMENT INORG CHEM 2019. [DOI: 10.1080/02603594.2019.1628025] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Yingshuo Liu
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan, USA
| | - Kwan Yee Leung
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan, USA
| | - Samuel E. Michaud
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan, USA
| | - Taylor L. Soucy
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan, USA
| | - Charles C. L. McCrory
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan, USA
- Macromolecular Science and Engineering Program, University of Michigan, Ann Arbor, Michigan, USA
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20
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Katsoukis G, Frei H. Ultrathin oxide layers for nanoscale integration of molecular light absorbers, catalysts, and complete artificial photosystems. J Chem Phys 2019; 150:041501. [DOI: 10.1063/1.5052453] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Georgios Katsoukis
- Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, University of California, Berkeley, California 94720, USA
| | - Heinz Frei
- Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, University of California, Berkeley, California 94720, USA
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21
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Electrochemical Properties of Homogeneous and Heterogeneous Anion Exchange Membranes Coated with Cation Exchange Polyelectrolyte. MEMBRANES 2019; 9:membranes9010013. [PMID: 30641931 PMCID: PMC6359488 DOI: 10.3390/membranes9010013] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/03/2018] [Revised: 12/29/2018] [Accepted: 01/06/2019] [Indexed: 11/28/2022]
Abstract
Coating ion exchange membranes with polyelectrolyte has been proven to be a cheap way to reduce concentration polarization and increase limiting current (for polyelectrolytes carrying fixed groups of the same sign of charge with respect to the membrane bulk), to create high monovalent selectivity, and to add the function of H+/OH− ions generation (for polyelectrolytes bearing fixed groups of the opposite sign of charge with respect to the membrane bulk). In the latter case, the balance between the counterion transport and the H+/OH− ions generation is affected by parameters of the substrate and the modifying layer. In this study we investigated the electrochemical characteristics of homogeneous Neosepta AMX-Sb and heterogeneous MA-41P membranes coated with one, two, or three layers of oppositely charged polyelectrolyte (the maximum thickness of each layer was 5 µm). It was found that the limiting current decreased earlier and the generation of H+/OH− ions was stronger in the case of the heterogeneous membrane. The shift in the pH of the solution depended more on the generation of H+/OH− ions at the modifying layer/solution interface than on the generation at the membrane/modifying layer interface, and in all cases water splitting started in the same range of potential drops over the membrane.
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22
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Robinson JE, Labrador NY, Chen H, Sartor BE, Esposito DV. Silicon Oxide-Encapsulated Platinum Thin Films as Highly Active Electrocatalysts for Carbon Monoxide and Methanol Oxidation. ACS Catal 2018. [DOI: 10.1021/acscatal.8b03626] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Jacob E. Robinson
- Department of Chemical Engineering, Columbia Electrochemical Energy Center, Lenfest Center for Sustainable Energy, Columbia University in the City of New York, 500 W. 120th Street, New York, New York 10027, United States
| | - Natalie Y. Labrador
- Department of Chemical Engineering, Columbia Electrochemical Energy Center, Lenfest Center for Sustainable Energy, Columbia University in the City of New York, 500 W. 120th Street, New York, New York 10027, United States
| | - Han Chen
- Department of Chemical Engineering, Columbia Electrochemical Energy Center, Lenfest Center for Sustainable Energy, Columbia University in the City of New York, 500 W. 120th Street, New York, New York 10027, United States
| | - B. Edward Sartor
- Department of Chemical Engineering, Columbia Electrochemical Energy Center, Lenfest Center for Sustainable Energy, Columbia University in the City of New York, 500 W. 120th Street, New York, New York 10027, United States
| | - Daniel V. Esposito
- Department of Chemical Engineering, Columbia Electrochemical Energy Center, Lenfest Center for Sustainable Energy, Columbia University in the City of New York, 500 W. 120th Street, New York, New York 10027, United States
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23
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Vos JG, Wezendonk TA, Jeremiasse AW, Koper MTM. MnO x/IrO x as Selective Oxygen Evolution Electrocatalyst in Acidic Chloride Solution. J Am Chem Soc 2018; 140:10270-10281. [PMID: 30024752 PMCID: PMC6099550 DOI: 10.1021/jacs.8b05382] [Citation(s) in RCA: 110] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
![]()
The oxygen evolution reaction (OER)
and chlorine evolution reaction
(CER) are electrochemical processes with high relevance to water splitting
for (solar) energy conversion and industrial production of commodity
chemicals, respectively. Carrying out the two reactions separately
is challenging, since the catalytic intermediates are linked by scaling
relations. Optimizing the efficiency of OER over CER in acidic media
has proven especially difficult. In this regard, we have investigated
the OER versus CER selectivity of manganese oxide (MnOx), a known OER catalyst. Thin films (∼5–20 nm) of MnOx were electrodeposited on glassy carbon-supported hydrous
iridium oxide (IrOx/GC) in aqueous chloride solutions of
pH ∼0.9. Using rotating ring–disk electrode voltammetry
and online electrochemical mass spectrometry, it was found that deposition
of MnOx onto IrOx decreases
the CER selectivity of the system in the presence of 30 mM Cl– from 86% to less than 7%, making it a highly OER-selective
catalyst. Detailed studies of the CER mechanism and ex-situ structure studies using SEM, TEM, and XPS suggest that the MnOx film is in fact not a catalytically active phase, but functions
as a permeable overlayer that disfavors the transport of chloride
ions.
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Affiliation(s)
- Johannes G Vos
- Leiden Institute of Chemistry , Leiden University , PO Box 9502, 2300 RA Leiden , The Netherlands
| | - Tim A Wezendonk
- Delft University of Technology , Julianalaan 136 , 2628 BL Delft , The Netherlands
| | - Adriaan W Jeremiasse
- Magneto Special Anodes (an Evoqua brand) , Calandstraat 109 , 3125 BA Schiedam , The Netherlands
| | - Marc T M Koper
- Leiden Institute of Chemistry , Leiden University , PO Box 9502, 2300 RA Leiden , The Netherlands
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