期刊
ELECTROCHIMICA ACTA
卷 260, 期 -, 页码 872-881出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2017.12.059
关键词
Oxygen evolution reaction; Co-Fe; Electrodeposition; Zn-air battery; Auger electron spectroscopy
资金
- Natural Sciences and Engineering Research Council of Canada (NSERC) of Canada [RES0016148]
- Future Energy Systems program [FES T06-P03]
- Chinese Scholarship Council
Cobalt and Fe were co-electrodeposited as single crystal, faceted particles onto carbon paper to produce Co/Fe-oxyhydroxide oxygen evolution reaction (OER) catalysts with various Co/Fe ratios. Electron microscopy and Auger electron spectroscopy were used to investigate the morphology and composition of the electrodeposits. Iron content in the deposits increased with increasing Fe concentration in the electrolyte and Fe segregated to the particle surfaces. Electrochemical tests demonstrated that the deposit Co/Fe ratio influences OER activity by altering the electrochemically active surface area (ECSA) and charge transfer resistance. The OER activity increased with increasing Fe content up to similar to 65 at% Fe, with a minimum overpotential of 0.33 V at 10 mA cm(-2) in 1 M KOH. The fabricated OER catalysts were assembled into a Zn-air battery for discharge-charge cycling tests and showed lower charge potentials compared with bare carbon paper. (C) 2017 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据