CuCo2S4/Cu7.2S4正极材料的制备与电化学性能研究

张 琴
重庆对外经贸学院

摘要


可充电镁离子电池（RMBs）因其高能量密度和高安全性而被认为是一种很有前途的储能设备，但其正极
材料高倍率性能和循环性能仍然不足。本文采用溶剂热法首次合成了 CuCo2S4/Cu7.2S4纳米复合材料，电化学结果表
明，CuCo2S4/Cu7.2S4复合材料在室温下具有较高的初始放电容量，在 10 mAg-1电流密度下首次放电比容量可达 256
mAhg-1，在 300 mAg-1条件下可达 123 mAhg-1，且在 300 mAg-1条件下具有优异的长周期循环稳定性。

关键词


镁离子电池；正极材料；纳米复合材料；钴；铜

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参考


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DOI: http://dx.doi.org/10.12361/2661-3654-07-01-141924

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