阳极
材料科学
有机自由基电池
阴极
共轭体系
锂(药物)
电池(电)
聚合物
氧化还原
化学工程
电化学
电极
锂离子电池
纳米技术
复合材料
化学
冶金
功率(物理)
物理化学
内分泌学
工程类
物理
医学
量子力学
作者
Zhao Yang,Manman Wu,Hongbin Chen,Jing Zhu,Jie Liu,Zhantong Ye,Yan Zhang,Hongtao Zhang,Yanfeng Ma,Chenxi Li
出处
期刊:Nano Energy
[Elsevier]
日期:2021-08-01
卷期号:86: 106055-106055
被引量:60
标识
DOI:10.1016/j.nanoen.2021.106055
摘要
Organic electrode materials are promising for future rechargeable batteries owing to their potential high capacity, tunable structure, flexibility and sustainability. Thus, developing high-performance all-organic batteries is highly demanded. But so far it is still a great challenge to achieve simultaneously such desired capacities and cycling stability, particularly for the case of all-organic symmetric batteries. Here, we design and report a polymer, named Poly-BQ1, which can be used as both cathode and anode materials for high-performance all-organic symmetric Lithium-ion battery. Such a two-fold electrode material was designed and optimized by balancing/maximizing abundant cathode-active groups (C˭O, C˭N) and anode-active groups (C˭C) in one stable conjugated polymer for both the purposes of achieving high capacity and cycling stability. Thus, owing to optimized integration of redox-active C˭O, C˭N and C˭C groups in a stable conjugated backbone and minimized redox-inactive units, the all-organic battery using this single material exhibits the highest capacity (351.5 mA h g−1 at 50 mA g−1) among all previously reported all-organic batteries with also remarkable cycling stability (99.96% retention per cycle up to 400 cycles) and rate performance (203.4 mA h g−1 at 1 A g−1).
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