2D Coordination Network of Trioxotriangulene with Multiple Redox Abilities and Its Rechargeable Battery Performance
2D Coordination Network of Trioxotriangulene with Multiple Redox Abilities and Its Rechargeable Battery Performance
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DOI：
10.3390/ijms21134723
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发表时间：
2020-07
影响因子：
5.6
通讯作者：
T. Murata;Taro Koide;Hirofumi Nobukuni;Ryotaro Tsuji;Y. Morita
中科院分区：
文献类型：
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作者：
T. Murata;Taro Koide;Hirofumi Nobukuni;Ryotaro Tsuji;Y. Morita
设计并合成了以三个吡啶基为配位的三重对称三氧三角烯衍生物。在循环伏安法测量中，三氧三角烯骨架表现出从中性自由基到四阴离子自由基的多阶段氧化还原能力。在单阴离子锌配合物中，三个吡啶基与锌离子配位，形成了一个直径大于12 Å的二维配位网络。该复合物被用作锂离子电池的正极活性材料，其容量约为60 mAh g - 1 /活性材料的重量，具有高达1000次循环的稳定循环性能。研究表明，三氧三角烯基配体形成的配位网络对提高有机可充电电池的循环性能是有效的。
A three-fold symmetric trioxotriangulene derivative with three pyridyl groups as coordinating sites was designed and synthesized. In a cyclic voltammetry measurement, the trioxotriangulene skeleton exhibited a multi-stage redox ability from neutral radical to radical tetra-anion species. In the zinc complex of monoanion species, three pyridyl groups coordinated to the zinc ion to build up a two-dimensional coordination network with a cavity larger than 12 Å in diameter. This complex was utilized as a cathode active material of a lithium ion battery, and it exhibited a capacity of ca. 60 mAh g−1 per the weight of the active material with a stable cycling performance up to 1000 cycles. This work shows that the coordination network formed by the trioxotriangulene-based ligand was effective in the improvement of cycle performance of the organic rechargeable battery.