A Bipolar and Self‐Polymerized Phthalocyanine Complex for Fast and Tunable Energy Storage in Dual‐Ion Batteries. Issue 30 (24th June 2019)

• Record Type: Journal Article
• Authors: Wang, Heng‐guo; Wang, Haidong; Si, Zhenjun; Li, Qiang; Wu, Qiong; Shao, Qi; Wu, Lanlan; Liu, Yu; Wang, Yinghui; Song, Shuyan; Zhang, Hongjie
• Is Part Of: Angewandte Chemie international edition. Volume 58:Issue 30(2019)
• Page Start: 10204
• Page End: 10208
• Publication Date: 2019-06-24
• Subjects: all-organic symmetric batteries -- bipolar organics -- dual-ion batteries -- phthalocyanine derivatives -- self-polymerization; Chemistry -- Periodicals; 540
• DOI: 10.1002/anie.201904242
• Languages: English
• ISSNs: 1433-7851

Abstract

Abstract: 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. Abstract : The fast and the tunable : A bipolar and self‐polymerizable phthalocyanine complex is used as the polarity‐switchable and high‐performance electrode material for lithium‐based and graphite‐based dual‐ion batteries, even all‐organic symmetric dual‐ion batteries. This approach can bridge the gap between organic batteries and dual‐ion batteries.