析氧
分解水
催化作用
电解水
制氢
可再生能源
降级(电信)
阴极保护
化学工程
氢
阳极
材料科学
电解
化学
纳米技术
电化学
计算机科学
电极
物理化学
电信
生物化学
有机化学
光催化
电气工程
电解质
工程类
作者
Yuqing Jia,Y. J. Li,Qiong Zhang,Sohail Yasin,Xinqian Zheng,Kai Ma,Hua Zhong,Jianfeng Shi,Chaohua Gu,Yuhai Dou,Shi Xue Dou
摘要
Abstract Hydrogen (H 2 ) has been regarded as a promising alternative to fossil‐fuel energy. Green H 2 produced via water electrolysis (WE) powered by renewable energy could achieve a zero‐carbon footprint. Considerable attention has been focused on developing highly active catalysts to facilitate the reaction kinetics and improve the energy efficiency of WE. However, the stability of the electrocatalysts hampers the commercial viability of WE. Few studies have elucidated the origin of catalyst degradation. In this review, we first discuss the WE mechanism, including anodic oxygen evolution reaction (OER) and cathodic hydrogen evolution reaction (HER). Then, we provide strategies used to enhance the stability of electrocatalysts. After that, the deactivation mechanisms of the typical commercialized HER and OER catalysts, including Pt, Ni, RuO 2 , and IrO 2 , are summarized. Finally, the influence of fluctuating energy on catalyst degradation is highlighted and in situ characterization methodologies for understanding the dynamic deactivation processes are described.
科研通智能强力驱动
Strongly Powered by AbleSci AI