析氧
电解
催化作用
阳极
制氢
分解水
电催化剂
电子转移
纳米技术
材料科学
化学工程
电解水
化学
电极
电化学
光化学
光催化
物理化学
生物化学
工程类
电解质
作者
Xian Zhang,Mengtian Jin,Feifei Jia,Jiaqi Huang,Abbas Amini,Shaoxian Song,Hao Yi,Chun Cheng
出处
期刊:Energy & environmental materials
日期:2023-01-03
卷期号:6 (5)
被引量:10
摘要
Alkaline water electrolysis provides a promising route for “green hydrogen” generation, where anodic oxygen evolution reaction (OER) plays a crucial role in coupling with cathodic hydrogen evolution reaction. To date, the development of highly active and durable OER catalysts based on earth‐abundant elements has drawn wide attention; nevertheless, their performance under high current densities (HCDs ≥1000 mA cm −2 ) has been less emphasized. This situation has seriously impeded large‐scale electrolysis industrialization. In this review, in order to provide a guideline for designing high‐performance OER electrocatalysts, the effects of HCD on catalytic performance involving electron transfer, mass transfer, and physical/chemical stability are summarized. Furthermore, the design principles were pointed out for obtaining efficient and robust OER electrocatalysts in light of recent progress of OER electrocatalysts working above 1000 mA cm −2 . These include the aspects of developing self‐supported catalytic electrodes, enhancing intrinsic activity, enhancing the catalyst–support interaction, engineering surface wettability, and introducing protective layer. Finally, summaries and outlooks in achieving OER at industrially relevant HCDs are proposed.
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