Portal de Periódicos da CAPES

Radical Covalent Organic Frameworks: A General Strategy to Immobilize Open‐Accessible Polyradicals for High‐Performance Capacitive Energy Storage

2015; Wiley; Volume: 54; Issue: 23 Linguagem: Inglês

10.1002/anie.201501706

1521-3773

Fei Xu, Hong Xu, Xiong Chen, Dingcai Wu, Yang Wu, Hao Liu, Cheng Gu, Ruowen Fu, Donglin Jiang,

Metal-Organic Frameworks: Synthesis and Applications

Ordered π-columns and open nanochannels found in covalent organic frameworks (COFs) could render them able to store electric energy. However, the synthetic difficulty in achieving redox-active skeletons has thus far restricted their potential for energy storage. A general strategy is presented for converting a conventional COF into an outstanding platform for energy storage through post-synthetic functionalization with organic radicals. The radical frameworks with openly accessible polyradicals immobilized on the pore walls undergo rapid and reversible redox reactions, leading to capacitive energy storage with high capacitance, high-rate kinetics, and robust cycle stability. The results suggest that channel-wall functional engineering with redox-active species will be a facile and versatile strategy to explore COFs for energy storage.