过电位
析氧
纳米棒
材料科学
结合能
兴奋剂
接口
分解水
化学工程
纳米技术
无机化学
催化作用
化学
电化学
物理化学
有机化学
光电子学
计算机科学
光催化
物理
电极
核物理学
计算机硬件
工程类
作者
Xiang Chen,Xinyue Xu,Yuwen Cheng,He Liu,Dongdong Li,Yumin Da,Yongtao Li,Dongming Liu,Wei Chen
出处
期刊:Small
[Wiley]
日期:2023-10-10
卷期号:20 (8)
被引量:4
标识
DOI:10.1002/smll.202303169
摘要
Abstract The adsorption energy of the reaction intermediates has a crucial influence on the electrocatalytic activity. Ni‐based materials possess high oxygen evolution reaction (OER) performance in alkaline, however too strong binding of *OH and high energy barrier of the rate‐determining step (RDS) severely limit their OER activity. Herein, a facile strategy is shown to fabricate novel vertical nanorod‐like arrays hybrid structure with the interface contact of S‐doped Ni(OH) 2 and CeO 2 in situ grown on Ni foam (S‐Ni(OH) 2 /CeO 2 /NF) through a one‐pot route. The alcohol molecules oxidation reaction experiments and theoretical calculations demonstrate that S‐doping and CeO 2 ‐interfacing significantly modulate the binding energies of OER intermediates toward optimal value and reduce the energy barrier of the RDS, contributing to remarkable OER activity for S‐Ni(OH) 2 /CeO 2 /NF with an ultralow overpotential of 196 mV at 10 mA cm −2 and long‐term durability over 150 h for the OER. This work offers an efficient doping and interfacing strategy to tune the binding energy of the OER intermediates for obtaining high‐performance electrocatalysts.
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