分解水
催化作用
双功能
析氧
电催化剂
镍
制氢
化学工程
材料科学
双功能催化剂
氢
热液循环
纳米结构
碱性水电解
过电位
电极
电化学
无机化学
塔菲尔方程
纳米技术
纳米片
化学
冶金
有机化学
物理化学
光催化
工程类
作者
Cao Hongshuai,Pan Liu,Ying Xie,Fang Xiao,Honglei Wang,Xiaoyan Wang,Kai Pan,Andreu Cabot
出处
期刊:Chemsuschem
[Wiley]
日期:2021-01-07
卷期号:14 (4): 1094-1102
被引量:16
标识
DOI:10.1002/cssc.202002624
摘要
A highly active and cheap catalyst is also key to hydrogen production by water splitting. However, most of the high-efficiency catalysts reported to date only are catalytically active for either the hydrogen evolution reaction (HER) or the oxygen evolution reaction (OER), which makes the development of multifunctional catalysts more meaningful. Here, for the first time, Co(CO3 )0.5 OH. 0.11 H2 O (CHCH) as precursor with different microstructures on the surface of nickel foam (NF) was obtained using a facile hydrothermal method. The CoP/NF catalyst was obtained after thermal phosphating that retained the microhierarchical structure of the precursor and greatly improved the catalytic performance, with a highly efficiency performance as HER and OER dual-functional catalyst. Density functional theory (DFT) calculations showed that the possible reason for the excellent performance of the CoP/NF layered structure is an increase in the number of of surface defects and an increased active surface area. The results reported in this paper show that CoP/NF, a layered bifunctional electrocatalyst, is a cost-effective and efficient water-splitting electrode. This finding can offer the opportunity for the commercial use of excess electric energy for large-scale water splitting hydrogen production.
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