双功能
电催化剂
析氧
催化作用
克拉克电极
氧气
双功能催化剂
无机化学
化学
氧化物
化学工程
材料科学
氧还原反应
降级(电信)
电极
电化学
物理化学
电解质
有机化学
工程类
电信
计算机科学
作者
Vishal Kotha,Imran Karajagi,Prakash C. Ghosh,Leela S. Panchakarla
出处
期刊:ACS applied energy materials
[American Chemical Society]
日期:2022-05-26
卷期号:5 (6): 7297-7307
被引量:10
标识
DOI:10.1021/acsaem.2c00823
摘要
Efficient, low-cost, and long-lasting electrocatalysts that accelerate sluggish oxygen evolution reaction (OER) and oxygen reduction reaction (ORR) kinetics are highly desirable for a variety of applications, including metal–air batteries and fuel cells, but they are uncommon. Such bifunctional catalysts are primarily harmed by either low catalytic activity or degradation during prolonged cycling. We devise a relatively low-temperature hydrothermal strategy for producing a perovskite oxide-based catalyst composed of potassium-substituted LaMnO3. In an alkaline environment, the catalyst performs admirably, with improved kinetics and activity for the ORR (half-wave potential of 0.78 V) and OER (potential at the current density of 10 mA cm–2 is 1.66 V). Furthermore, as a two-electrode cell, this catalyst renders the potential for use as an electrode in zinc–air batteries with unprecedented stability (no visible sign of degradation even after 1000 cycles of charge–discharge).
科研通智能强力驱动
Strongly Powered by AbleSci AI