共价键
氧化还原
化学
金属有机骨架
电化学储能
金属
光化学
储能
动态共价化学
纳米技术
材料科学
无机化学
分子
电化学
有机化学
电极
超级电容器
超分子化学
物理化学
功率(物理)
物理
吸附
量子力学
作者
Jia‐Nan Chang,Shan Li,Qi Li,Jianhui Wang,Can Guo,Sheng Wang,Yifa Chen,Shun-Li Li,Ya‐Qian Lan
标识
DOI:10.1002/ange.202402458
摘要
Visible‐light sensitive and bi‐functionally favored CO2 reduction (CRR)/evolution (CER) photocathode catalysts that can get rid of the utilization of ultraviolet light and improve sluggish kinetics is demanded to conquer the current technique‐barrier of traditional Li‐CO2 battery. Here, a kind of redox molecular junction sp2c metal‐covalent organic framework (i.e. Cu3‐BTDE‐COF) has been prepared through the connection between Cu3 and BTDE and can serve as efficient photocathode catalyst in light‐assisted Li‐CO2 battery. Cu3‐BTDE‐COF with redox‐ability, visible‐light‐adsorption region, electron‐hole separation ability and endows the photocathode with excellent round‐trip efficiency (95.2%) and an ultralow voltage hysteresis (0.18 V), outperforming the Schiff base COFs (i.e. Cu3‐BTDA‐COF and Cu3‐DT‐COF) and majority of the reported photocathode catalysts. Combined theoretical calculations with characterizations, Cu3‐BTDE‐COF with the integration of Cu3 centers, thiazole and cyano groups possess strong CO2 adsorption/activation and Li+ interaction/diffusion ability to boost the CRR/CER kinetics and related battery property.
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