聚丙烯腈
塔菲尔方程
过电位
静电纺丝
分解水
析氧
材料科学
纳米纤维
复合数
化学工程
水溶液
热稳定性
催化作用
制作
纳米技术
电化学
复合材料
电极
化学
聚合物
有机化学
物理化学
光催化
工程类
医学
替代医学
病理
作者
Hua Ma,Xiuwen Wu,Xiuli Fu,Zhijian Peng
标识
DOI:10.1016/j.jallcom.2022.166910
摘要
The development of a facile strategy to fabricate inexpensive and efficient nonnoble metal-based alloys to replace their traditionally costly noble-metal counterparts for electrocatalytic water splitting holds great appeal. Here, we report novel FeNi-FeCo-C composite nanofibers (FeNi-FeCo-C CNFs), which was prepared simply by electrospinning a precursor solution containing Fe, Ni and Co nitrates together with polyacrylonitrile powders and subsequent thermal treatment. The optimal FeNi-FeCo-C CNFs prepared with 10 wt% polyacrylonitrile at a thermal treatment temperature of 800 °C show excellent electrocatalytic performance for oxygen evolution in a 1 mol·L−1 KOH aqueous solution with a relatively small overpotential of 262 mV at 10 mA cm−2, a low Tafel slope of 47.2 mV dec−1, and excellent cycling stability. The present strategy will provide new insight for the design and fabrication of electrocatalysts for water splitting.
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