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Article: Controlling Proton and Electron Transfer Rates to Enhance the Activity of an Oxygen Reduction Electrocatalyst
Title | Controlling Proton and Electron Transfer Rates to Enhance the Activity of an Oxygen Reduction Electrocatalyst |
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Authors | |
Keywords | electrocatalysis self-assembled monolayers proton and electron transfer voltammetry oxygen reduction |
Issue Date | 2018 |
Citation | Angewandte Chemie - International Edition, 2018, v. 57 n. 41, p. 13480-13483 How to Cite? |
Abstract | © 2018 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim An electrochemical approach is developed that allows for the control of both proton and electron transfer rates in the O2reduction reaction (ORR). A dinuclear Cu ORR catalyst was prepared that can be covalently attached to thiol-based self-assembled monolayers (SAMs) on Au electrodes using azide–alkyne click chemistry. Using this architecture, the electron transfer rate to the catalyst is modulated by changing the length of the SAM, and the proton transfer rate to the catalyst is controlled with an appended lipid membrane modified with proton carriers. By tuning the relative rates of proton and electron transfer, the current density of the lipid-covered catalyst is enhanced without altering its core molecular structure. This electrochemical platform will help identify optimal thermodynamic and kinetic parameters for ORR catalysts and catalysts of other reactions that involve the transfer of both protons and electrons. |
Persistent Identifier | http://hdl.handle.net/10722/262801 |
ISSN | 2023 Impact Factor: 16.1 2023 SCImago Journal Rankings: 5.300 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Gautam, Rajendra P. | - |
dc.contributor.author | Lee, Yi Teng | - |
dc.contributor.author | Herman, Gabriel L. | - |
dc.contributor.author | Moreno, Cynthia M. | - |
dc.contributor.author | Tse, Edmund C.M. | - |
dc.contributor.author | Barile, Christopher J. | - |
dc.date.accessioned | 2018-10-08T02:47:06Z | - |
dc.date.available | 2018-10-08T02:47:06Z | - |
dc.date.issued | 2018 | - |
dc.identifier.citation | Angewandte Chemie - International Edition, 2018, v. 57 n. 41, p. 13480-13483 | - |
dc.identifier.issn | 1433-7851 | - |
dc.identifier.uri | http://hdl.handle.net/10722/262801 | - |
dc.description.abstract | © 2018 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim An electrochemical approach is developed that allows for the control of both proton and electron transfer rates in the O2reduction reaction (ORR). A dinuclear Cu ORR catalyst was prepared that can be covalently attached to thiol-based self-assembled monolayers (SAMs) on Au electrodes using azide–alkyne click chemistry. Using this architecture, the electron transfer rate to the catalyst is modulated by changing the length of the SAM, and the proton transfer rate to the catalyst is controlled with an appended lipid membrane modified with proton carriers. By tuning the relative rates of proton and electron transfer, the current density of the lipid-covered catalyst is enhanced without altering its core molecular structure. This electrochemical platform will help identify optimal thermodynamic and kinetic parameters for ORR catalysts and catalysts of other reactions that involve the transfer of both protons and electrons. | - |
dc.language | eng | - |
dc.relation.ispartof | Angewandte Chemie - International Edition | - |
dc.subject | electrocatalysis | - |
dc.subject | self-assembled monolayers | - |
dc.subject | proton and electron transfer | - |
dc.subject | voltammetry | - |
dc.subject | oxygen reduction | - |
dc.title | Controlling Proton and Electron Transfer Rates to Enhance the Activity of an Oxygen Reduction Electrocatalyst | - |
dc.type | Article | - |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1002/anie.201806795 | - |
dc.identifier.scopus | eid_2-s2.0-85053542235 | - |
dc.identifier.hkuros | 297270 | - |
dc.identifier.spage | 13480 | - |
dc.identifier.epage | 13483 | - |
dc.identifier.eissn | 1521-3773 | - |
dc.identifier.isi | WOS:000446306600016 | - |
dc.identifier.issnl | 1433-7851 | - |