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Mo X, Deng Y, Lai SKM, Gao X, Yu HL, Low KH, Guo Z, Wu HL, Au-Yeung HY, Tse ECM. Mechanical Interlocking Enhances the Electrocatalytic Oxygen Reduction Activity and Selectivity of Molecular Copper Complexes. J Am Chem Soc 2023; 145:6087-6099. [PMID: 36853653 DOI: 10.1021/jacs.2c10988] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/01/2023]
Abstract
Efficient O2 reduction reaction (ORR) for selective H2O generation enables advanced fuel cell technology. Nonprecious metal catalysts are viable and attractive alternatives to state-of-the-art Pt-based materials that are expensive. Cu complexes inspired by Cu-containing O2 reduction enzymes in nature are yet to reach their desired ORR catalytic performance. Here, the concept of mechanical interlocking is introduced to the ligand architecture to enforce dynamic spatial restriction on the Cu coordination site. Interlocked catenane ligands could govern O2 binding mode, promote electron transfer, and facilitate product elimination. Our results show that ligand interlocking as a catenane steers the ORR selectivity to H2O as the major product via the 4e- pathway, rivaling the selectivity of Pt, and boosts the onset potential by 130 mV, the mass activity by 1.8 times, and the turnover frequency by 1.5 fold as compared to the noninterlocked counterpart. Our Cu catenane complex represents one of the first examples to take advantage of mechanical interlocking to afford electrocatalysts with enhanced activity and selectivity. The mechanistic insights gained through this integrated experimental and theoretical study are envisioned to be valuable not just to the area of ORR energy catalysis but also with broad implications on interlocked metal complexes that are of critical importance to the general fields in redox reactions involving proton-coupled electron transfer steps.
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Affiliation(s)
- Xiaoyong Mo
- Department of Chemistry, HKU-CAS Joint Laboratory of New Materials, University of Hong Kong, Hong Kong, China
| | - Yulin Deng
- Department of Chemistry, HKU-CAS Joint Laboratory of New Materials, University of Hong Kong, Hong Kong, China
| | - Samuel Kin-Man Lai
- Department of Chemistry, HKU-CAS Joint Laboratory of New Materials, University of Hong Kong, Hong Kong, China
| | - Xutao Gao
- Department of Chemistry, HKU-CAS Joint Laboratory of New Materials, University of Hong Kong, Hong Kong, China
| | - Hung-Ling Yu
- Center for Condensed Matter Sciences, National Taiwan University, Taipei 10617, Taiwan
- Center of Atomic Initiative for New Materials, National Taiwan University, Taipei 10617, Taiwan
| | - Kam-Hung Low
- Department of Chemistry, HKU-CAS Joint Laboratory of New Materials, University of Hong Kong, Hong Kong, China
| | - Zhengxiao Guo
- Department of Chemistry, HKU-CAS Joint Laboratory of New Materials, University of Hong Kong, Hong Kong, China
- HKU Zhejiang Institute of Research and Innovation, Hangzhou 311305, People's Republic of China
| | - Heng-Liang Wu
- Center for Condensed Matter Sciences, National Taiwan University, Taipei 10617, Taiwan
- Center of Atomic Initiative for New Materials, National Taiwan University, Taipei 10617, Taiwan
| | - Ho Yu Au-Yeung
- Department of Chemistry, HKU-CAS Joint Laboratory of New Materials, University of Hong Kong, Hong Kong, China
- State Key Laboratory of Synthetic Chemistry, University of Hong Kong, Hong Kong, China
| | - Edmund C M Tse
- Department of Chemistry, HKU-CAS Joint Laboratory of New Materials, University of Hong Kong, Hong Kong, China
- HKU Zhejiang Institute of Research and Innovation, Hangzhou 311305, People's Republic of China
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Novikova VV, Starodubova SP, Chaika MY, Kravchenko TA. Electroreduction of molecular oxygen on carbon electrode modified by dispersed silver. RUSS J ELECTROCHEM+ 2013. [DOI: 10.1134/s1023193513030117] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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4
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Thorseth MA, Tornow CE, Tse EC, Gewirth AA. Cu complexes that catalyze the oxygen reduction reaction. Coord Chem Rev 2013. [DOI: 10.1016/j.ccr.2012.03.033] [Citation(s) in RCA: 120] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Fukuzumi S, Yamada Y, Karlin KD. Hydrogen Peroxide as a Sustainable Energy Carrier: Electrocatalytic Production of Hydrogen Peroxide and the Fuel Cell. Electrochim Acta 2012; 82:493-511. [PMID: 23457415 PMCID: PMC3584454 DOI: 10.1016/j.electacta.2012.03.132] [Citation(s) in RCA: 136] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
This review describes homogeneous and heterogeneous catalytic reduction of dioxygen with metal complexes focusing on the catalytic two-electron reduction of dioxygen to produce hydrogen peroxide. Whether two-electron reduction of dioxygen to produce hydrogen peroxide or four-electron O2-reduction to produce water occurs depends on the types of metals and ligands that are utilized. Those factors controlling the two processes are discussed in terms of metal-oxygen intermediates involved in the catalysis. Metal complexes acting as catalysts for selective two-electron reduction of oxygen can be utilized as metal complex-modified electrodes in the electrocatalytic reduction to produce hydrogen peroxide. Hydrogen peroxide thus produced can be used as a fuel in a hydrogen peroxide fuel cell. A hydrogen peroxide fuel cell can be operated with a one-compartment structure without a membrane, which is certainly more promising for the development of low-cost fuel cells as compared with two compartment hydrogen fuel cells that require membranes. Hydrogen peroxide is regarded as an environmentally benign energy carrier because it can be produced by the electrocatalytic two-electron reduction of O2, which is abundant in air, using solar cells; the hydrogen peroxide thus produced could then be readily stored and then used as needed to generate electricity through the use of hydrogen peroxide fuel cells.
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Affiliation(s)
- Shunichi Fukuzumi
- Department of Material and Life Science, Graduate School of Engineering, Osaka University, ALCA, Japan Science and Technology Agency (JST), Suita, Osaka 565-0871, Japan
- Department of Bioinspired Science, Ewha Womans University, Seoul 120-750, Korea
| | - Yusuke Yamada
- Department of Material and Life Science, Graduate School of Engineering, Osaka University, ALCA, Japan Science and Technology Agency (JST), Suita, Osaka 565-0871, Japan
| | - Kenneth D. Karlin
- Department of Bioinspired Science, Ewha Womans University, Seoul 120-750, Korea
- Department of Chemistry, The Johns Hopkins University, Baltimore, MD 21218, USA
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McCrory CCL, Devadoss A, Ottenwaelder X, Lowe RD, Stack TDP, Chidsey CED. Electrocatalytic O2 reduction by covalently immobilized mononuclear copper(I) complexes: evidence for a binuclear Cu2O2 intermediate. J Am Chem Soc 2011; 133:3696-9. [PMID: 21366244 DOI: 10.1021/ja106338h] [Citation(s) in RCA: 122] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A Cu(I) complex of 3-ethynyl-phenanthroline covalently immobilized onto an azide-modified glassy carbon surface is an active electrocatalyst for the four-electron (4-e) reduction of O(2) to H(2)O. The rate of O(2) reduction is second-order in Cu coverage at moderate overpotential, suggesting that two Cu(I) species are necessary for efficient 4-e reduction of O(2). Mechanisms for O(2) reduction are proposed that are consistent with the observations for this covalently immobilized system and previously reported results for a similar physisorbed Cu(I) system.
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Affiliation(s)
- Charles C L McCrory
- Department of Chemistry, Stanford University, Stanford, California 94305, United States
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Thorum M, Yadav J, Gewirth A. Oxygen Reduction Activity of a Copper Complex of 3,5-Diamino-1,2,4-triazole Supported on Carbon Black. Angew Chem Int Ed Engl 2008. [DOI: 10.1002/ange.200803554] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Thorum M, Yadav J, Gewirth A. Oxygen Reduction Activity of a Copper Complex of 3,5-Diamino-1,2,4-triazole Supported on Carbon Black. Angew Chem Int Ed Engl 2008; 48:165-7. [DOI: 10.1002/anie.200803554] [Citation(s) in RCA: 143] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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