Co修饰的碳载Pt纳米粒子催化剂的制备与表征

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Abstract The cathode of proton exchange membrane fuel cells need to use highly active electrocatalyst to accelerate the oxygen reduction reaction (ORR), and the key problem can be solved by improving the functional reaction utilization rate of the active component precious metal platinum. In this work, the ORR catalyst carrier Co/C was prepared through the transition metal cobalt-organic framework (Co-MOF) as the precursor, and the alloy Pt-Co/C catalysts was prepared by impregnation-liquid phase reduction method. The pore structure, phase structure, micro-morphology and electrochemical properties of the samples were characterized and analyzed. The results show that the carrier Co/C has high specific surface area and interconnected hierarchical meso-porous structure. Its unique morphology and rich pore structure make the loaded platinum nanoparticles uniformly distributed, the particle size distribution range is narrow, and the average particle size is about 6.8 nm. Its electrochemical active surface area (ECSA) is close to the value of commercial Pt/C catalyst, which indicates that the active component platinum has high utilization rate in the alloy catalyst, meanwhile it shows the unique pore structure advantage of the carrier.

Key words： proton exchange membrane fuel cell metal-organic framework Pt-Co alloy oxygen reduction reaction

Published: 09 December 2021

CLC number:

TB321

About author:: Guoyu Wu received his Ph.D. degree form Central South University in 2019. He is a postdoctoral research at China National Gold Group Co.,Ltd.. He is mainly engaged in research on the hydrometallurgy of rare and precious metals, numerical simulation of metallurgical process, preparation and performance application of metallurgical materials. He has published more than 10 academic papers and patents.

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	WU Guoyu
	ZHENG Ye
	WANG Mingyong
	XING Zhijun

Cite this article:

WU Guoyu,ZHENG Ye,WANG Mingyong, et al. Preparation and Characterization of Cobalt Modified Carbon Supported Platinum Nanoparticles Catalysts[J]. Materials Reports, 2021, 35(z2): 306-310.

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http://www.mater-rep.com/EN/ OR http://www.mater-rep.com/EN/Y2021/V35/Iz2/306

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