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5. Fe-Co Co-Doped 1D@2D Carbon-Based Composite as an Efficient Catalyst for Zn–Air Batteries.

Author

Deng, Ziwei, Liu, Wei, Zhang, Junyuan, Bai, Shuli, Liu, Changyu, Zhang, Mengchen, Peng, Chao, Xu, Xiaolong, and Jia, Jianbo

Subjects
OXYGEN evolution reactions, DOPING agents (Chemistry), CARBON composites, CARBON nanotubes, STANDARD hydrogen electrode, OXYGEN reduction, ALKALINE batteries, COBALT catalysts
Abstract

A Fe-Co dual-metal co-doped N containing the carbon composite (FeCo-HNC) was prepared by adjusting the ratio of iron to cobalt as well as the pyrolysis temperature with the assistance of functionalized silica template. Fe1Co-HNC, which was formed with 1D carbon nanotubes and 2D carbon nanosheets including a rich mesoporous structure, exhibited outstanding oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) catalytic activities. The ORR half-wave potential is 0.86 V (vs. reversible hydrogen electrode, RHE), and the OER overpotential is 0.76 V at 10 mA cm−2 with the Fe1Co-HNC catalyst. It also displayed superior performance in zinc–air batteries. This method provides a promising strategy for the fabrication of efficient transition metal-based carbon catalysts. [ABSTRACT FROM AUTHOR]

Published
2024
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