High performance platinum single atom electrocatalyst for oxygen reduction reaction

Author:

Liu Jing,Jiao Menggai,Lu Lanlu,Barkholtz Heather M.,Li Yuping,Wang Ying,Jiang Luhua,Wu Zhijian,Liu Di-jia,Zhuang Lin,Ma Chao,Zeng Jie,Zhang BingsenORCID,Su Dangsheng,Song Ping,Xing Wei,Xu Weilin,Wang Ying,Jiang Zheng,Sun Gongquan

Abstract

Abstract For the large-scale sustainable implementation of polymer electrolyte membrane fuel cells in vehicles, high-performance electrocatalysts with low platinum consumption are desirable for use as cathode material during the oxygen reduction reaction in fuel cells. Here we report a carbon black-supported cost-effective, efficient and durable platinum single-atom electrocatalyst with carbon monoxide/methanol tolerance for the cathodic oxygen reduction reaction. The acidic single-cell with such a catalyst as cathode delivers high performance, with power density up to 680 mW cm−2 at 80 °C with a low platinum loading of 0.09 mgPt cm−2, corresponding to a platinum utilization of 0.13 gPt kW−1 in the fuel cell. Good fuel cell durability is also observed. Theoretical calculations reveal that the main effective sites on such platinum single-atom electrocatalysts are single-pyridinic-nitrogen-atom-anchored single-platinum-atom centres, which are tolerant to carbon monoxide/methanol, but highly active for the oxygen reduction reaction.

Publisher

Springer Science and Business Media LLC

Subject

General Physics and Astronomy,General Biochemistry, Genetics and Molecular Biology,General Chemistry

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