Wang Heng-Guo, Wang Haidong, Si Zhenjun, Li Qiang, Wu Qiong, Shao Qi, Wu Lanlan, Liu Yu, Wang Yinghui, Song Shuyan, Zhang Hongjie
State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, Jilin, China.
School of Materials Science and Engineering, Changchun University of Science and Technology, Changchun, 130022, Jilin, China.
Angew Chem Int Ed Engl. 2019 Jul 22;58(30):10204-10208. doi: 10.1002/anie.201904242. Epub 2019 Jun 24.
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 at 50 mA g and a high reversible capacity of 74.3 mAh g after 4000 cycles at 4 A g . Most importantly, a high energy density of 239 Wh kg and power density of 11.5 kW kg can be obtained in all-organic symmetric DIBs.
双极氧化还原有机物因其灵活性、可持续性和环境友好性，作为储能电极材料受到了关注。然而，对其在全有机电池中的应用，更不用说双离子电池（DIBs），目前还处于起步阶段。在此，我们提出了一种筛选多种基于酞菁的双极有机物的策略。可自聚合的双极铜四胺酞菁（CuTAPc）在各种储能系统中显示出多功能应用，包括以CuTAPc为阴极材料的锂基双离子电池、以CuTAPc为阳极材料的石墨基双离子电池以及以CuTAPc为阴极和阳极材料的对称双离子电池。值得注意的是，在锂基双离子电池中，使用CuTAPc作为阴极材料，在50 mA g下可实现236 mAh g的高放电容量，在4 A g下循环4000次后，可逆容量高达74.3 mAh g。最重要的是，在全有机对称双离子电池中可获得239 Wh kg的高能量密度和11.5 kW kg的功率密度。
