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A Truxenone‐based Covalent Organic Framework as an All‐Solid‐State Lithium‐Ion Battery Cathode with High Capacity
Author(s) -
Yang Xiye,
Hu Yiming,
Dunlap Nathan,
Wang Xubo,
Huang Shaofeng,
Su Zhiping,
Sharma Sandeep,
Jin Yinghua,
Huang Fei,
Wang Xiaohui,
Lee Sehee,
Zhang Wei
Publication year - 2020
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.202008619
Subject(s) - lithium (medication) , cathode , covalent bond , covalent organic framework , energy storage , materials science , redox , battery (electricity) , ion , solid state , electrode , chemical engineering , lithium vanadium phosphate battery , lithium ion battery , nanotechnology , electrochemistry , chemistry , organic chemistry , metallurgy , medicine , power (physics) , physics , quantum mechanics , engineering , endocrinology
All‐solid‐state lithium ion batteries (LIBs) are ideal for energy storage given their safety and long‐term stability. However, there is a limited availability of viable electrode active materials. Herein, we report a truxenone‐based covalent organic framework (COF‐TRO) as cathode materials for all‐solid‐state LIBs. The high‐density carbonyl groups combined with the ordered crystalline COF structure greatly facilitate lithium ion storage via reversible redox reactions. As a result, a high specific capacity of 268 mAh g −1 , almost 97.5 % of the calculated theoretical capacity was achieved. To the best of our knowledge, this is the highest capacity among all COF‐based cathode materials for all‐solid‐state LIBs reported so far. Moreover, the excellent cycling stability (99.9 % capacity retention after 100 cycles at 0.1 C rate) shown by COF‐TRO suggests such truxenone‐based COFs have great potential in energy storage applications.