稻壳基活性炭对锰酸锂电池倍率性能的影响

被引：4

作者：

宋雪丽 ^{[1
]}

张建会 ^{[1
]}

陆海彦 ^{[2
]}

包金鹏 ^{[2
]}

田永霞 ^{[1
]}

林海波 ^{[2
]}

机构：

[1] 吉林大学珠海学院

[2] 吉林大学化学学院

来源：

应用化学 | 2018年 / 35卷 / 12期

关键词：

锰酸锂; 活性炭; 倍率性能; 扩散系数;

D O I：

暂无

中图分类号：

TM912 [蓄电池];

学科分类号：

摘要：

稻壳基活性炭(RH-AC)具有天然的多级孔道结构,是由稻壳碳化和活化两步得到的。用RH-AC和锰酸锂(LMO)混合制备复合电极,以锂片为对电极,组装半电池进行恒流充放电测试。实验发现:含有质量分数为5%的RH-AC与90. 5%的LMO的复合电极(RH-AC5)在5C电流密度循环100圈后比容量为89. 3 m A·h/g,容量保持率高于89%,远优于纯锰酸锂电极。采用循环伏安法计算出的锂离子扩散系数,及利用交流阻抗测试拟合后得到的结果进一步验证了该结论。

引用

页码：1507 / 1513

页数：7

共 13 条

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