期刊
INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE
卷 15, 期 12, 页码 11723-11731出版社
ESG
DOI: 10.20964/2020.12.39
关键词
Nonprecious Metal Catalyst; Oxygen Reduction Reaction; Mesoporous carbon; Cobalt-nitrogen-doped Carbon
资金
- Natural Science Foundation of Heilongjiang Province, China [LH2019E092]
- Fundamental Research Funds in Heilongjiang Provincial Universities [YSTSXK201868]
It is very essential to explore economical non-precious metal catalysts with high performance for the application of a mental-air battery. In this paper, using corn straw core (CSC) as raw material and KOH as activator, the obtained porous activated carbon (AC) with a high specific surface area (1209.1 m(2) g(-1)) and suitable mesopore distribution (similar to 3.8 nm) is prepared through high-temperature carbonization and activation process. The cobalt and nitrogen co-doped activated carbon (Co-N-C) catalyst is obtained by doping cobalt nitrate and urea into AC. The Co-N-C catalyst shows excellent electrocatalytic performance, and the half-wave potential of 0.736 V, the Tafel slope of 108.2 mV dec(-1), and the electron-transfer number of around 4 are achieved in 0.1 M KOH. The economic and practical biomass carbon derived from CSC is a kind of promising electrocatalyst for ORR in alkaline medium.
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