塔菲尔方程
过电位
电催化剂
硫化钴
催化作用
钴
析氧
硫化物
化学工程
无机化学
化学
过渡金属
电化学
材料科学
冶金
电极
物理化学
有机化学
工程类
作者
Yubing Zhou,Min Luo,Zechen Zhang,Wanrong Li,Xia Shen,Weiwei Xia,Min Zhou,Xianghua Zeng
标识
DOI:10.1016/j.apsusc.2018.04.080
摘要
Earth-abundant transition metal sulfide eletrocatalysts for oxygen evolution reaction (OER) with compelling catalytic performance hold a key to clean and renewable energy conversion. Herein, we report a one-step solvothermal method to synthesize iron-doped cobalt sulfide (CoFeS) nanoplates. A highly efficient OER catalytic performance with a low overpotential of 290 mV, small Tafel slope of 52.6 mV dec−1 and long-term operational stability is achieved from the CoFeS nanostructures with an optimized Fe/Co ratio. The enhanced catalytic activity is attributed to the high electric conductivity of CoFeS that accelerating charge transfer during the reaction, and Fe doping that changing the local Co–S environments toward a moderate absorption energy to the reaction intermediates.
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