氧还原反应
法拉第效率
燃料电池
材料科学
化学工程
氢
氧化还原
结合能
氢燃料
催化作用
电化学
纳米技术
化学
工程类
冶金
原子物理学
电极
物理化学
有机化学
物理
生物化学
作者
Yibo Yan,Zhengping Zhao,Jun Zhao,Yaohui Xu,Yifan Xu,Yuhan Zhao,Wenfei Tang,Jong‐Min Lee
出处
期刊:ACS materials letters
[American Chemical Society]
日期:2021-07-02
卷期号:3 (8): 1143-1150
被引量:27
标识
DOI:10.1021/acsmaterialslett.1c00351
摘要
Developing efficient electrocatalysts applicable to CO2 reduction reaction and fuel cells has drawn great attention for energy conservation and environmental protection. Molecular conversion of CO2 to valuable products and fuel cells functioning with ultrahigh energy efficiencies is critical to remediate the global warming and energy crisis. Here, ultrathin hexagonal CuNi nanosheets are demonstrated to drive CO2 reduction to C ≥ 2 products with a high Faradaic efficiency (80.5%) at −1.5 V vs RHE. Modulation of the d-band states, intermediate binding energy, and interatomic synergistic interaction between Ni and Cu are crucial for the enhancement of catalytic activity through intermediate binding control and boosting of charge transfer kinetics. In addition, a four-electron oxygen reduction reaction (ORR) process is validated for the ultrahigh performance in steady-state hydrogen–air fuel cells.
科研通智能强力驱动
Strongly Powered by AbleSci AI