塔菲尔方程
过电位
电催化剂
析氧
分解水
催化作用
化学工程
热液循环
材料科学
电极
制作
化学
纳米技术
光催化
电化学
物理化学
病理
工程类
医学
生物化学
替代医学
作者
Yuying Yang,Jingxian Yang,Pei Liang,Ziyu Zhang,Zhimin Li,Zhongai Hu
标识
DOI:10.1016/j.catcom.2021.106393
摘要
The development of efficient electrocatalysts for the oxygen evolution reaction (OER) is indispensable to accelerate water splitting. Herein, a new V2O3/[email protected] electrocatalyst was fabricated via a one-step hydrothermal strategy for the first time. Benefiting from the absence of binder or conductive agents during electrode fabrication, the increased number of active sites due to redistribution of electrons near the hetero-interfaces, as well as the cooperative effect between V2O3 and FeOOH, the optimized V2O3/[email protected] catalyst demonstrated excellent OER electrocatalytic properties. A low overpotential of 249 mV was achieved at 10 mA cm−2 and the Tafel slope was as low as 43.1 mV dec−1 in an alkaline solution. Meanwhile, the V2O3/[email protected] electrocatalyst presented outstanding long-term stability for OER maintained for 24 h at a current density of 25 mA cm−2 without significant attenuation. This work provided a novel and feasible strategy for the preparation of other multi-component composite electrocatalysts.
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