Premium
A Bipolar and Self‐Polymerized Phthalocyanine Complex for Fast and Tunable Energy Storage in Dual‐Ion Batteries
Author(s) -
Wang Hengguo,
Wang Haidong,
Si Zhenjun,
Li Qiang,
Wu Qiong,
Shao Qi,
Wu Lanlan,
Liu Yu,
Wang Yinghui,
Song Shuyan,
Zhang Hongjie
Publication year - 2019
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201904242
Subject(s) - cathode , lithium (medication) , energy storage , graphite , anode , materials science , energy density , flexibility (engineering) , power density , ion , phthalocyanine , polymerization , electrode , nanotechnology , chemical engineering , analytical chemistry (journal) , chemistry , power (physics) , engineering physics , organic chemistry , physics , composite material , medicine , statistics , mathematics , engineering , endocrinology , quantum mechanics , polymer
Bipolar redox organics have attracted interest as electrode materials for energy storage owing to their flexibility, sustainability and environmental friendliness. However, an understanding of their application in all‐organic batteries, let alone dual‐ion batteries (DIBs), is in its infancy. Herein, we propose a strategy to screen a variety of phthalocyanine‐based bipolar organics. The self‐polymerizable bipolar Cu tetraaminephthalocyanine (CuTAPc) shows multifunctional applications in various energy storage systems, including lithium‐based DIBs using CuTAPc as the cathode material, graphite‐based DIBs using CuTAPc as the anode material and symmetric DIBs using CuTAPc as both the cathode and anode materials. Notably, in lithium‐based DIBs, the use of CuTAPc as the cathode material results in a high discharge capacity of 236 mAh g −1 at 50 mA g −1 and a high reversible capacity of 74.3 mAh g −1 after 4000 cycles at 4 A g −1 . Most importantly, a high energy density of 239 Wh kg −1 and power density of 11.5 kW kg −1 can be obtained in all‐organic symmetric DIBs.