Enhanced catalytic performance of Pt by coupling with carbon defects

Defect engineering is a promising strategy for supported catalysts to improve the catalytic activity and durability. Here, we selected the carbon (C) matrix enriched with topological defects to serve as the substrate material, in which the topological defects can act as anchoring centers to trap Pt...

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Autores principales:	Yan Dong, Yuan Wang, Ziqi Tian, Kemin Jiang, Yanle Li, Yichao Lin, Colin W. Oloman, Elod L. Gyenge, Jianwei Su, Liang Chen
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	O2 reduction reaction Pt-based catalysts topological C defects metal-support interactions proton-exchange-membrane fuel cells Science (General) Q1-390
Acceso en línea:	https://doaj.org/article/dd56a60bd6464c579736a1092bfa3c87
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spelling	oai:doaj.org-article:dd56a60bd6464c579736a1092bfa3c872021-11-28T04:38:59ZEnhanced catalytic performance of Pt by coupling with carbon defects2666-675810.1016/j.xinn.2021.100161https://doaj.org/article/dd56a60bd6464c579736a1092bfa3c872021-11-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S2666675821000862https://doaj.org/toc/2666-6758Defect engineering is a promising strategy for supported catalysts to improve the catalytic activity and durability. Here, we selected the carbon (C) matrix enriched with topological defects to serve as the substrate material, in which the topological defects can act as anchoring centers to trap Pt nanoparticles for driving the O2 reduction reactions (ORRs). Both experimental characterizations and theoretical simulations revealed the strong Pt-defect interaction with enhanced charge transfer on the interface. Despite a low Pt loading, the supported catalyst can still achieve a remarkable 55 mV positive shift of half-wave potential toward ORR in O2-saturated 0.1 M HClO4 electrolyte compared with the commercial Pt catalyst on graphitized C. Moreover, the degeneration after 5,000 voltage cycles was negligible. This finding indicates that the presence of strong interaction between Pt and topological C defects can not only stabilize Pt nanoparticles but also optimize the electronic structures of Pt/C catalysts toward ORR.Yan DongYuan WangZiqi TianKemin JiangYanle LiYichao LinColin W. OlomanElod L. GyengeJianwei SuLiang ChenElsevierarticleO2 reduction reactionPt-based catalyststopological C defectsmetal-support interactionsproton-exchange-membrane fuel cellsScience (General)Q1-390ENThe Innovation, Vol 2, Iss 4, Pp 100161- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	O2 reduction reaction Pt-based catalysts topological C defects metal-support interactions proton-exchange-membrane fuel cells Science (General) Q1-390
spellingShingle	O2 reduction reaction Pt-based catalysts topological C defects metal-support interactions proton-exchange-membrane fuel cells Science (General) Q1-390 Yan Dong Yuan Wang Ziqi Tian Kemin Jiang Yanle Li Yichao Lin Colin W. Oloman Elod L. Gyenge Jianwei Su Liang Chen Enhanced catalytic performance of Pt by coupling with carbon defects
description	Defect engineering is a promising strategy for supported catalysts to improve the catalytic activity and durability. Here, we selected the carbon (C) matrix enriched with topological defects to serve as the substrate material, in which the topological defects can act as anchoring centers to trap Pt nanoparticles for driving the O2 reduction reactions (ORRs). Both experimental characterizations and theoretical simulations revealed the strong Pt-defect interaction with enhanced charge transfer on the interface. Despite a low Pt loading, the supported catalyst can still achieve a remarkable 55 mV positive shift of half-wave potential toward ORR in O2-saturated 0.1 M HClO4 electrolyte compared with the commercial Pt catalyst on graphitized C. Moreover, the degeneration after 5,000 voltage cycles was negligible. This finding indicates that the presence of strong interaction between Pt and topological C defects can not only stabilize Pt nanoparticles but also optimize the electronic structures of Pt/C catalysts toward ORR.
format	article
author	Yan Dong Yuan Wang Ziqi Tian Kemin Jiang Yanle Li Yichao Lin Colin W. Oloman Elod L. Gyenge Jianwei Su Liang Chen
author_facet	Yan Dong Yuan Wang Ziqi Tian Kemin Jiang Yanle Li Yichao Lin Colin W. Oloman Elod L. Gyenge Jianwei Su Liang Chen
author_sort	Yan Dong
title	Enhanced catalytic performance of Pt by coupling with carbon defects
title_short	Enhanced catalytic performance of Pt by coupling with carbon defects
title_full	Enhanced catalytic performance of Pt by coupling with carbon defects
title_fullStr	Enhanced catalytic performance of Pt by coupling with carbon defects
title_full_unstemmed	Enhanced catalytic performance of Pt by coupling with carbon defects
title_sort	enhanced catalytic performance of pt by coupling with carbon defects
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/dd56a60bd6464c579736a1092bfa3c87
work_keys_str_mv	AT yandong enhancedcatalyticperformanceofptbycouplingwithcarbondefects AT yuanwang enhancedcatalyticperformanceofptbycouplingwithcarbondefects AT ziqitian enhancedcatalyticperformanceofptbycouplingwithcarbondefects AT keminjiang enhancedcatalyticperformanceofptbycouplingwithcarbondefects AT yanleli enhancedcatalyticperformanceofptbycouplingwithcarbondefects AT yichaolin enhancedcatalyticperformanceofptbycouplingwithcarbondefects AT colinwoloman enhancedcatalyticperformanceofptbycouplingwithcarbondefects AT elodlgyenge enhancedcatalyticperformanceofptbycouplingwithcarbondefects AT jianweisu enhancedcatalyticperformanceofptbycouplingwithcarbondefects AT liangchen enhancedcatalyticperformanceofptbycouplingwithcarbondefects
_version_	1718408288159137792

Enhanced catalytic performance of Pt by coupling with carbon defects

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