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Design of Ru-Ni diatomic sites for efficient alkaline hydrogen oxidation
Anion exchange membrane fuel cells are limited by the slow kinetics of alkaline hydrogen oxidation reaction (HOR). Here, we establish HOR catalytic activities of single-atom and diatomic sites as a function of *H and *OH binding energies to screen the optimal active sites for the HOR. As a result, t...
Autores principales: | , , , , , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American Association for the Advancement of Science
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9159574/ https://www.ncbi.nlm.nih.gov/pubmed/35648856 http://dx.doi.org/10.1126/sciadv.abm3779 |
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author | Han, Lili Ou, Pengfei Liu, Wei Wang, Xiang Wang, Hsiao-Tsu Zhang, Rui Pao, Chih-Wen Liu, Xijun Pong, Way-Faung Song, Jun Zhuang, Zhongbin Mirkin, Michael V. Luo, Jun Xin, Huolin L. |
author_facet | Han, Lili Ou, Pengfei Liu, Wei Wang, Xiang Wang, Hsiao-Tsu Zhang, Rui Pao, Chih-Wen Liu, Xijun Pong, Way-Faung Song, Jun Zhuang, Zhongbin Mirkin, Michael V. Luo, Jun Xin, Huolin L. |
author_sort | Han, Lili |
collection | PubMed |
description | Anion exchange membrane fuel cells are limited by the slow kinetics of alkaline hydrogen oxidation reaction (HOR). Here, we establish HOR catalytic activities of single-atom and diatomic sites as a function of *H and *OH binding energies to screen the optimal active sites for the HOR. As a result, the Ru-Ni diatomic one is identified as the best active center. Guided by the theoretical finding, we subsequently synthesize a catalyst with Ru-Ni diatomic sites supported on N-doped porous carbon, which exhibits excellent catalytic activity, CO tolerance, and stability for alkaline HOR and is also superior to single-site counterparts. In situ scanning electrochemical microscopy study validates the HOR activity resulting from the Ru-Ni diatomic sites. Furthermore, in situ x-ray absorption spectroscopy and computational studies unveil a synergistic interaction between Ru and Ni to promote the molecular H(2) dissociation and strengthen OH adsorption at the diatomic sites, and thus enhance the kinetics of HOR. |
format | Online Article Text |
id | pubmed-9159574 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | American Association for the Advancement of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-91595742022-06-16 Design of Ru-Ni diatomic sites for efficient alkaline hydrogen oxidation Han, Lili Ou, Pengfei Liu, Wei Wang, Xiang Wang, Hsiao-Tsu Zhang, Rui Pao, Chih-Wen Liu, Xijun Pong, Way-Faung Song, Jun Zhuang, Zhongbin Mirkin, Michael V. Luo, Jun Xin, Huolin L. Sci Adv Physical and Materials Sciences Anion exchange membrane fuel cells are limited by the slow kinetics of alkaline hydrogen oxidation reaction (HOR). Here, we establish HOR catalytic activities of single-atom and diatomic sites as a function of *H and *OH binding energies to screen the optimal active sites for the HOR. As a result, the Ru-Ni diatomic one is identified as the best active center. Guided by the theoretical finding, we subsequently synthesize a catalyst with Ru-Ni diatomic sites supported on N-doped porous carbon, which exhibits excellent catalytic activity, CO tolerance, and stability for alkaline HOR and is also superior to single-site counterparts. In situ scanning electrochemical microscopy study validates the HOR activity resulting from the Ru-Ni diatomic sites. Furthermore, in situ x-ray absorption spectroscopy and computational studies unveil a synergistic interaction between Ru and Ni to promote the molecular H(2) dissociation and strengthen OH adsorption at the diatomic sites, and thus enhance the kinetics of HOR. American Association for the Advancement of Science 2022-06-01 /pmc/articles/PMC9159574/ /pubmed/35648856 http://dx.doi.org/10.1126/sciadv.abm3779 Text en Copyright © 2022 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution License 4.0 (CC BY). https://creativecommons.org/licenses/by/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Physical and Materials Sciences Han, Lili Ou, Pengfei Liu, Wei Wang, Xiang Wang, Hsiao-Tsu Zhang, Rui Pao, Chih-Wen Liu, Xijun Pong, Way-Faung Song, Jun Zhuang, Zhongbin Mirkin, Michael V. Luo, Jun Xin, Huolin L. Design of Ru-Ni diatomic sites for efficient alkaline hydrogen oxidation |
title | Design of Ru-Ni diatomic sites for efficient alkaline hydrogen oxidation |
title_full | Design of Ru-Ni diatomic sites for efficient alkaline hydrogen oxidation |
title_fullStr | Design of Ru-Ni diatomic sites for efficient alkaline hydrogen oxidation |
title_full_unstemmed | Design of Ru-Ni diatomic sites for efficient alkaline hydrogen oxidation |
title_short | Design of Ru-Ni diatomic sites for efficient alkaline hydrogen oxidation |
title_sort | design of ru-ni diatomic sites for efficient alkaline hydrogen oxidation |
topic | Physical and Materials Sciences |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9159574/ https://www.ncbi.nlm.nih.gov/pubmed/35648856 http://dx.doi.org/10.1126/sciadv.abm3779 |
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