气候变化领域集成服务门户(CCPortal): Direct integration of ultralow-platinum alloy into nanocarbon architectures for efficient oxygen reduction in fuel cells

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DOI	10.1016/j.scib.2021.07.001
	Direct integration of ultralow-platinum alloy into nanocarbon architectures for efficient oxygen reduction in fuel cells
	Zaman S.; Tian X.; Su Y.-Q.; Cai W.; Yan Y.; Qi R.; Douka A.I.; Chen S.; You B.; Liu H.; Ding S.; Guo X.; Xia B.Y.
发表日期	2021
ISSN	20959273
英文摘要	Developing efficient platinum (Pt)-based electrocatalysts is enormously significant for fuel cells. Herein, we report an integrated electrocatalyst of ultralow-Pt alloy encapsulated into nitrogen-doped nanocarbon architecture for efficient oxygen reduction reaction. This hybrid Pt-based catalyst achieves a mass activity of 3.46 A mgpt−1 at the potential of 0.9 V vs. RHE with a negligible stability decay after 10,000 cycles. More importantly, this half-cell activity can be expressed at full cell level with a high Pt utilization of 10.22 W mgPt−1cathode and remarkable durability after 30,000 cycles in single-cell. Experimental and theoretical investigations reveal that a highly strained Pt structure with an optimal Pt-O binding energy is induced by the incorporation of Co/Ni into Pt lattice, which would account for the improved reaction kinetics. The synergistic catalysis due to nitrogen-doped nanocarbon architecture and active Pt component is responsible for the enhanced catalytic activity. Meanwhile, the strong metal-support interaction and optimized hydrophilic properties of nanocarbon matrix facilitate efficient mass transport and water management. This work may provide significant insights in designing the low-Pt integrated electrocatalysts for fuel cells and beyond. © 2021 Science China Press
关键词	Electrocatalyst Fuel cells Low-platinum alloy Nanocarbon Oxygen reduction reaction
语种	英语
来源期刊	Science Bulletin
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/207656
作者单位	School of Chemistry and Chemical Engineering, Key Laboratory of Material Chemistry for Energy Conversion and Storage (Ministry of Education), Hubei Key Laboratory of Material Chemistry and Service Failure, Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology (HUST), Wuhan, 430074, China; School of Chemistry, Xi'an Key Laboratory of Sustainable Energy Materials Chemistry, Ministry of Education Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong University, Xi'an, 710049, China; Sustainable Energy Laboratory, Faculty of Material Science and Chemistry, China University of Geosciences, Wuhan, 430074, China; School of Materials Science and Engineering, University of Shanghai for Science and Technology, Shanghai, 200093, China; Department of Information Science and Technology, Eas...
推荐引用方式 GB/T 7714	Zaman S.,Tian X.,Su Y.-Q.,et al. Direct integration of ultralow-platinum alloy into nanocarbon architectures for efficient oxygen reduction in fuel cells[J],2021.
APA	Zaman S..,Tian X..,Su Y.-Q..,Cai W..,Yan Y..,...&Xia B.Y..(2021).Direct integration of ultralow-platinum alloy into nanocarbon architectures for efficient oxygen reduction in fuel cells.Science Bulletin.
MLA	Zaman S.,et al."Direct integration of ultralow-platinum alloy into nanocarbon architectures for efficient oxygen reduction in fuel cells".Science Bulletin (2021).