Synthesis of a Hexagonal-Phase Platinum-Lanthanide Alloy as a Durable Fuel-Cell-Cathode Catalyst

doi:10.1021/acs.chemmater.2c03219

	Synthesis of a Hexagonal-Phase Platinum-Lanthanide Alloy as a Durable Fuel-Cell-Cathode Catalyst
	Xu, Shi-Long 1; Zhao, Shuai 1; Zeng, Wei-Jie 1; Li, Shuai 1; Zuo, Ming 1; Lin, Yue 1; Chu, ShengQi 2; Chen, Ping 3; Liu, Jun 4,5; Liang, Hai-Wei 1
刊名	CHEMISTRY OF MATERIALS
	2022-11-16
ISSN号	0897-4756
DOI	10.1021/acs.chemmater.2c03219
通讯作者	Liang, Hai-Wei(hwliang@ustc.edu.cn)
英文摘要	Carbon-supported platinum-lanthanide alloy nanoparticles are promising fuel-cell-cathode catalysts with enhanced electrocatalytic performance, but synthetic challenges remain because of high O affinity and very negative reduction potential of lanthanide elements. Herein, we demonstrate an industrially relevant impregnation approach for the general synthesis of a carbon-supported intermetallic hexagonal Pt(5)Ln (Ln = La, Ce, Pr, and Nd) catalyst by the interparticle-distance-dependent hydrogen-spillover strategy. We understand that increasing the available area of hydrogen spillover by narrowing the interparticle distance can facilitate the reduction of Ln around Pt, which guarantees the alloying of Pt with enough amount of Ln and thus promotes the formation of a thermodynamically favorable intermetallic hexagonal Pt(5)Ln phase. The prepared hexagonal Pt(5)Ln catalysts show enhanced oxygen reduction reaction activity in H-2-O-2 fuel cells and improved power density and durability in practical H-2-air fuel cells. Our method is facile, universal, and scalable and opens a general route for intermetallic Pt-Ln catalyst synthesis that is conventionally challenging.
资助项目	National Key Research and Development Program of China[22071225] ; National Natural Science Foundation of China[WK2060190103] ; Fundamental Research Funds for the Central Universities[KY2060000175] ; Hefei National Synchrotron Radiation Laboratory[2021HSC-CIP015] ; Collaborative Innovation Program of Hefei Science Center of CAS[1W1B] ; Beijing Synchrotron Radiation Facility ; [2018YFA0702001]
WOS关键词	OXYGEN REDUCTION ; ELECTROCATALYSTS ; NANOPARTICLES ; STABILITY
WOS研究方向	Chemistry ; Materials Science
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000886706100001
资助机构	National Key Research and Development Program of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Hefei National Synchrotron Radiation Laboratory ; Collaborative Innovation Program of Hefei Science Center of CAS ; Beijing Synchrotron Radiation Facility
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/131688]
专题	中国科学院合肥物质科学研究院
通讯作者	Liang, Hai-Wei
作者单位	1.Univ Sci & Technol China, Hefei Natl Res Ctr Phys Sci Microscale, Dept Chem, Hefei 230026, Peoples R China 2.Chinese Acad Sci, Inst High Energ y Phys, Beijing 100049, Peoples R China 3.Anhui Univ, Sch Chem & Chem Engn, Hefei 230601, Peoples R China 4.Chinese Acad Sci, Inst Solid State Phys, Hefei Inst Phys Sci, Hefei 230031, Peoples R China 5.Anhui Contango New Energy Technol Co Ltd, Hefei 230088, Peoples R China
推荐引用方式 GB/T 7714	Xu, Shi-Long,Zhao, Shuai,Zeng, Wei-Jie,et al. Synthesis of a Hexagonal-Phase Platinum-Lanthanide Alloy as a Durable Fuel-Cell-Cathode Catalyst[J]. CHEMISTRY OF MATERIALS,2022.
APA	Xu, Shi-Long.,Zhao, Shuai.,Zeng, Wei-Jie.,Li, Shuai.,Zuo, Ming.,...&Liang, Hai-Wei.(2022).Synthesis of a Hexagonal-Phase Platinum-Lanthanide Alloy as a Durable Fuel-Cell-Cathode Catalyst.CHEMISTRY OF MATERIALS.
MLA	Xu, Shi-Long,et al."Synthesis of a Hexagonal-Phase Platinum-Lanthanide Alloy as a Durable Fuel-Cell-Cathode Catalyst".CHEMISTRY OF MATERIALS (2022).