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Hydrogen‐Bonded Organic Framework to Upgrade Cycling Stability and Rate Capability of Li‐CO2 Batteries.

Authors :
Cheng, Zhibin
Fang, Yanlong
Yang, Yisi
Zhang, Hao
Fan, Zhiwen
Zhang, Jindan
Xiang, Shengchang
Chen, Banglin
Zhang, Zhangjing
Source :
Angewandte Chemie. 11/6/2023, Vol. 135 Issue 45, p1-8. 8p.
Publication Year :
2023

Abstract

Elaborately designed multifunctional electrocatalysts capable of promoting Li+ and CO2 transport are essential for upgrading the cycling stability and rate capability of Li‐CO2 batteries. Hydrogen‐bonded organic frameworks (HOFs) with open channels and easily functionalized surfaces hold great potential for applications in efficient cathodes of Li‐CO2 batteries. Herein, a robust HOFS (HOF‐FJU‐1) is introduced for the first time as a co‐catalyst in the cathode material of Li‐CO2 batteries. HOF‐FJU‐1 with cyano groups located periodically in the pore can induce homogeneous deposition of discharge products and accommodate volumetric expansion of discharge products during cycling. Besides, HOF‐FJU‐1 enables effective interaction between Ru0 nanoparticles and cyano groups, thus forming efficient and uniform catalytic sites for CRR/CER. Moreover, HOF‐FJU‐1 with regularly arranged open channels are beneficial for CO2 and Li+ transport, enabling rapid redox kinetic conversion of CO2. Therefore, the HOF‐based Li‐CO2 batteries are capable of stable operation at 400 mA g−1 for 1800 h and maintain a low overpotential of 1.96 V even at high current densities up to 5 A g−1. This work provides valuable guidance for developing multifunctional HOF‐based catalysts to upgrade the longevity and rate capability of Li‐CO2 batteries. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
00448249
Volume :
135
Issue :
45
Database :
Academic Search Index
Journal :
Angewandte Chemie
Publication Type :
Academic Journal
Accession number :
173281901
Full Text :
https://doi.org/10.1002/ange.202311480