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A Universal Organic Cathode for Ultrafast Lithium and Multivalent Metal Batteries
Author(s) -
Fan Xiulin,
Wang Fei,
Ji Xiao,
Wang Ruixing,
Gao Tao,
Hou Singyuk,
Chen Ji,
Deng Tao,
Li Xiaogang,
Chen Long,
Luo Chao,
Wang Luning,
Wang Chunsheng
Publication year - 2018
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201803703
Subject(s) - cathode , battery (electricity) , energy storage , anode , lithium (medication) , materials science , nanotechnology , ion , metal , power density , chemical engineering , chemistry , electrode , power (physics) , organic chemistry , metallurgy , physics , thermodynamics , medicine , engineering , endocrinology
Low‐cost multivalent battery chemistries (Mg 2+ , Al 3+ ) have been extensively investigated for large‐scale energy storage applications. However, their commercialization is plagued by the poor power density and cycle life of cathodes. A universal polyimides@CNT (PI@CNT) cathode is now presented that can reversibly store various cations with different valences (Li + , Mg 2+ , Al 3+ ) at an extremely fast rate. The ion‐coordination charge storage mechanism of PI@CNT is systemically investigated. Full cells using PI@CNT cathodes and corresponding metal anodes exhibit long cycle life (>10000 cycles), fast kinetics (>20 C), and wide operating temperature range (−40 to 50 °C), making the low‐cost industrial polyimides universal cathodes for different multivalent metal batteries. The stable ion‐coordinated mechanism opens a new foundation for the development of high‐energy and high‐power multivalent batteries.