首页|Electronegativity-assisted optimized electronic structure of functionalized-Pt catalysts for boosting oxygen reduction kinetics

Electronegativity-assisted optimized electronic structure of functionalized-Pt catalysts for boosting oxygen reduction kinetics

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Opportunity to harmonize aspects of oxygen reduction reaction(ORR)performance and structure,and morphology,as well as composition,is urgent for the commercialization of proton exchange membrane fuel cells.Herein,we demonstrate the design and synthesis of a functionalized-supported-Pt catalyst(Pt@HNC)featuring a hollow nitrogen-modified dodecahedral carbon substrate obtained by a stress-induced-shrink tailoring route.The as-obtained Pt@HNC catalyst possesses enhanced ORR per-formance,in particular with half-wave potential,mass activity(MA)and specific activity,which greatly exceed the commercial Pt/C.The density functional theory(DFT)calculations further confirmed that the charge redistribution induced by the electronegativity differences improved the electron interaction between Pt and HNC support.The optimized electronic structure of Pt weakens the reaction energy barrier on the Pt@HNC surface and adsorption of*OH species,thus cooperatively improving the intrinsic activity toward ORR.Additionally,our work indeed pro-vides a guide for the future design of functional nanoma-terials in the field of catalysts and clean energy.

Proton exchange membrane fuel cell(PEMFC)Oxygen reduction catalysisSupported Pt-based catalystStability

Jin Long、Kai-Wen Zhuang、Wei Liao、Yan An、Bin Wang、Chen-Zhong Wu、Jian-Xin Cao、Qing Wang、Jun-Song Chen、Qing-Mei Wang

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Guizhou University Key Laboratory of Green Chemical and Clean Energy Technology,School of Chemistry and Chemical Engineering,Guizhou University,Guiyang 550025,China

Guizhou University Engineering Research Center of Efficient Utilization for Industrial Waste,Guizhou University,Guiyang 550025,China

Institute of Dual-Carbon and New Energy Technology Innovation and Development of Guizhou Province,Guiyang 550025,China

Department of Dermatology,West China Hospital,Sichuan University,Chengdu 610041,China

Institute for Catalysis,Hokkaido University,Sapporo 001-0021,Japan

School of Materials and Energy,University of Electronic Science and Technology of China.Chengdu 611731,China

Interdisciplinary Materials Research Center,Institute for Advanced Study,Chengdu University,Chengdu 610106,China

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Natural Science Foundation of ChinaNatural Science Foundation of ChinaNatural Science Foundation of ChinaNatural Science Special Foundation of Guizhou UniversityNatural Science Special Foundation of Guizhou UniversityScience and Technology Support Project of Guizhou Provincial science and Technology DepartmentScience and Technology Support Project of Guizhou Provincial science and Technology DepartmentOpen Project of Institute of Dualcarbon and New Energy Technology Innovation and Development of Guizhou Province

221690052206800922262006202017 Special Post A702775203301ZK[2023]050ZK[2023]403DCRE-2023-06

2024

10.1007/s12598-023-02580-x

稀有金属(英文版)
中国有色金属学会

稀有金属(英文版)

CSTPCDEI
影响因子：0.801
ISSN：1001-0521
年,卷(期)：2024.43(5)
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