期刊
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
卷 5, 期 11, 页码 10266-10274出版社
AMER CHEMICAL SOC
DOI: 10.1021/acssuschemeng.7b02281
关键词
Oxygen evolution reaction; Electrocatalysts; CoxB; Ball-milling method
资金
- National Natural Science Foundation of China [51572051]
- Natural Science Foundation of Heilongjiang Province [E2016023]
- Fundamental Research Funds for the Central Universities [GK2110260179, GK2110260188]
- Ministry Education of China [B13015]
- PhD Student Research and Innovation Fund of the Fundamental Research Funds for the Central Universities [HEUGIP201714]
- Key Laboratory for Photonic and Electric Bandgap Materials, Ministry of Education, Harbin Normal University, China [PEBM201508]
Development of noble-metal-free and active electrocatalysts is crucial for the oxygen evolution reaction (OER) in the water-splitting process. Herein, crystal CoxB catalysts (x = 1-3) of the OER are fabricated by a ball-milling method. Among these CoxB catalysts, Co2B exhibits the best OER activity, with a current density of 10 mA cm(-2) at an overpotential of 287 mV in 1 M KOH solution. Such OER activity of Co2B is favorably comparable to that of the commercial IrO2 and most recently reported OER catalysts. Furthermore, the Co2B catalyst exhibits excellent stability with a stable current density of 50 mA cm(-2) over 12 h of continuous electrolysis operation. X-ray photoelectron spectroscopy and cyclic voltammetry demonstrate that the B in CoxB makes oxidation easier, leading to their enhanced OER activities in comparison to metal Co. In addition, the Co2B electrocatalyst also exhibits high activity in the hydrogen evolution reaction; thus, the catalyst can be used as a bifunctional catalyst for full water splitting.
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