Oxygen reduction reaction at conducting polymer electrodes in a wider context: Insights from modelling concerning outer and inner sphere mechanisms
Abstract Practical interest in oxygen reduction reaction (ORR) has traditionally been due to its application at fuel cells’ cathode following its complete 4e route to the water. In search of new electrode materials, it was discovered that conducting polymers (CPs) also are capable of driving ORR, th...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley-VCH
2023-04-01
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| Series: | Electrochemical Science Advances |
| Subjects: | |
| Online Access: | https://doi.org/10.1002/elsa.202100191 |
| _version_ | 1827960847162408960 |
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| author | Viktor Gueskine Mikhail Vagin Magnus Berggren Xavier Crispin Igor Zozoulenko |
| author_facet | Viktor Gueskine Mikhail Vagin Magnus Berggren Xavier Crispin Igor Zozoulenko |
| author_sort | Viktor Gueskine |
| collection | DOAJ |
| description | Abstract Practical interest in oxygen reduction reaction (ORR) has traditionally been due to its application at fuel cells’ cathode following its complete 4e route to the water. In search of new electrode materials, it was discovered that conducting polymers (CPs) also are capable of driving ORR, though predominantly halting the process at 2e reduction leading to hydrogen peroxide generation. As alternative ways to produce this “green oxidant” are attracting increasing attention, a detailed study of the ORR mechanism at CP electrodes gains importance. Here, we summarize our recent theoretical work on the topic, which underscores the fundamental difference between CP and electrocatalytic metal ORR electrodes. Our insights also bring to us the attention of outer‐sphere electron transfer, not unknown but somewhat ignored in the field. We also put the action of CP electrodes in a more general context of chemical ORR and redox mediation responsible for the electrocatalytic ORR mechanism. |
| first_indexed | 2024-04-09T16:16:18Z |
| format | Article |
| id | doaj.art-bd00d5f07cdf412390423239e6c82732 |
| institution | Directory Open Access Journal |
| issn | 2698-5977 |
| language | English |
| last_indexed | 2024-04-09T16:16:18Z |
| publishDate | 2023-04-01 |
| publisher | Wiley-VCH |
| record_format | Article |
| series | Electrochemical Science Advances |
| spelling | doaj.art-bd00d5f07cdf412390423239e6c827322023-04-24T05:33:52ZengWiley-VCHElectrochemical Science Advances2698-59772023-04-0132n/an/a10.1002/elsa.202100191Oxygen reduction reaction at conducting polymer electrodes in a wider context: Insights from modelling concerning outer and inner sphere mechanismsViktor Gueskine0Mikhail Vagin1Magnus Berggren2Xavier Crispin3Igor Zozoulenko4Laboratory of Organic Electronics Department of Science and Technology Linköping University Norrköping 601 74 SwedenLaboratory of Organic Electronics Department of Science and Technology Linköping University Norrköping 601 74 SwedenLaboratory of Organic Electronics Department of Science and Technology Linköping University Norrköping 601 74 SwedenLaboratory of Organic Electronics Department of Science and Technology Linköping University Norrköping 601 74 SwedenLaboratory of Organic Electronics Department of Science and Technology Linköping University Norrköping 601 74 SwedenAbstract Practical interest in oxygen reduction reaction (ORR) has traditionally been due to its application at fuel cells’ cathode following its complete 4e route to the water. In search of new electrode materials, it was discovered that conducting polymers (CPs) also are capable of driving ORR, though predominantly halting the process at 2e reduction leading to hydrogen peroxide generation. As alternative ways to produce this “green oxidant” are attracting increasing attention, a detailed study of the ORR mechanism at CP electrodes gains importance. Here, we summarize our recent theoretical work on the topic, which underscores the fundamental difference between CP and electrocatalytic metal ORR electrodes. Our insights also bring to us the attention of outer‐sphere electron transfer, not unknown but somewhat ignored in the field. We also put the action of CP electrodes in a more general context of chemical ORR and redox mediation responsible for the electrocatalytic ORR mechanism.https://doi.org/10.1002/elsa.202100191BBLDFT and ab initio MD modellingelectrocatalysishydrogen peroxide H2O2iner/outer‐sphere electron transfer mechanismoxygen reduction reaction (ORR) |
| spellingShingle | Viktor Gueskine Mikhail Vagin Magnus Berggren Xavier Crispin Igor Zozoulenko Oxygen reduction reaction at conducting polymer electrodes in a wider context: Insights from modelling concerning outer and inner sphere mechanisms Electrochemical Science Advances BBL DFT and ab initio MD modelling electrocatalysis hydrogen peroxide H2O2 iner/outer‐sphere electron transfer mechanism oxygen reduction reaction (ORR) |
| title | Oxygen reduction reaction at conducting polymer electrodes in a wider context: Insights from modelling concerning outer and inner sphere mechanisms |
| title_full | Oxygen reduction reaction at conducting polymer electrodes in a wider context: Insights from modelling concerning outer and inner sphere mechanisms |
| title_fullStr | Oxygen reduction reaction at conducting polymer electrodes in a wider context: Insights from modelling concerning outer and inner sphere mechanisms |
| title_full_unstemmed | Oxygen reduction reaction at conducting polymer electrodes in a wider context: Insights from modelling concerning outer and inner sphere mechanisms |
| title_short | Oxygen reduction reaction at conducting polymer electrodes in a wider context: Insights from modelling concerning outer and inner sphere mechanisms |
| title_sort | oxygen reduction reaction at conducting polymer electrodes in a wider context insights from modelling concerning outer and inner sphere mechanisms |
| topic | BBL DFT and ab initio MD modelling electrocatalysis hydrogen peroxide H2O2 iner/outer‐sphere electron transfer mechanism oxygen reduction reaction (ORR) |
| url | https://doi.org/10.1002/elsa.202100191 |
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