Azine-based polymers with a two-electron redox process as cathode materials for organic batteries
Azine-based polymers with a two-electron redox process as cathode materials for organic batteries
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DOI：
10.1039/d0ta04083e
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发表时间：
2020-06-14
影响因子：
11.9
通讯作者：
Esser, Birgit
中科院分区：
文献类型：
--
作者：
Acker, Pascal;Speer, Martin E.;Esser, Birgit
有机基电池正极材料由于具有更高的可持续性、低毒和节能的生产和回收利用等优点，受到了越来越多的关注。经历两次可逆氧化的有机p型化合物相对较少，但与经历单电子过程的分子相比，可以提供更高的比容量。在此，我们提出了氮氮(N-N-连接的二亚胺)为基础的聚合物具有两个可逆氧化的吸引电位分别为2.9和3.3vs.Li/Li+。在锂基半电池中，具有良好的循环稳定性和133 mA h g(-1)的有效比容量，以及高达100C的高倍率性能。我们的研究引入了氮杂环作为极具吸引力的正极活性电池材料。
There is a growing interest in organic-based cathode materials for batteries due to their higher sustainability, low toxicity and energy-efficient production and recycling. Organic p-type compounds that undergo two reversible oxidations are relatively rare, but can provide a higher specific capacity compared to molecules undergoing one-electron processes. We herein present azine (N-N-linked diimine)-based polymers featuring two reversible oxidations at attractive potentials of 2.9 and 3.3 Vvs.Li/Li+. A cross-linked and end-capped azine-based polymer provided good cycling stability in a Li-based half cell and an available specific capacity of 133 mA h g(-1)paired with a high rate performance up to 100C rate. Our study introduces azines as attractive cathode-active battery materials.