期刊
JOURNAL OF POWER SOURCES
卷 472, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.jpowsour.2020.228451
关键词
Rare earth fluoride; Nitrogen-containing carbon; Oxygen reduction reaction; Zinc-air battery
资金
- National Natural Science Foundation of China [21561019, 51863019]
- program of Changjiang Scholars and Innovative Research Team in University [IRT_15R56]
- Foundation of A Hundred Youth Talents Training Program of Lanzhou Jiaotong University
- Instrument Analysis Center of Lanzhou Jiaotong University
Recently, advanced nitrogen-containing carbon materials create a huge opportunity for developing efficient catalysts, and show great potential in zinc-air batteries (ZABs). In this study, YF3 doped nitrogen-containing carbon (YE3@NC) electrocatalyst is prepared using m-phenylenediamine as nitrogen and carbon sources. Yttrium chloride, ammonium fluoride and L-arginine are used as Y source, F source and assistant, respectively. Spherical YE3 precursor is obtained through a facile arginine-assisted hydrothermal method, which is then coated with nitrogen-containing carbon and pyrolyzed at high temperature to fabricate YE3@NC. It exhibits a positive onset potential (0.943 V), half-wave potential (0.836 V), high current density and good cycling stability (10 h degradation: 13%). When YE3@NC is applied as air cathode electrode in ZABs, the obtained battery has a high open circuit potential (1.478 V) and peak power density (75 mW cm(-2)). This approach makes YE3@NC to be a promising candidate as cathode catalyst in ZABs in the future.
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