NaBF4对锂离子电池石墨负极性能的影响

王力臻 张文静 刘玉军 谷书华 孙新科

引用本文: 王力臻, 张文静, 刘玉军, 谷书华, 孙新科. NaBF4对锂离子电池石墨负极性能的影响[J]. 无机化学学报, 2013, 29(7): 1407-1413. doi: 10.3969/j.issn.1001-4861.2013.00.196 shu
Citation:  WANG Li-Zhen, ZHANG Wen-Jing, LIU Yu-Jun, GU Shu-Hua, SUN Xin-Ke. Influence of NaBF4 on the Graphite Anode for Li-Ion Battery[J]. Chinese Journal of Inorganic Chemistry, 2013, 29(7): 1407-1413. doi: 10.3969/j.issn.1001-4861.2013.00.196 shu

NaBF4对锂离子电池石墨负极性能的影响

摘要: 利用恒流充放电、循环伏安、交流阻抗、SEM、EDS等测试技术研究了在锂离子电池石墨负极和浆过程中加入NaBF4对其电化学性能的影响。结果表明:NaBF4的最佳添加量为2%,可明显提高石墨电极的首次放电比容量和充放电效率;电极的自放电性能和循环稳定性得到明显改善。室温条件下,添加了2% NaBF4的电极以放电容量计算的自放电率为0.87%·d-1,比未添加时降低了15%;循环伏安、EDS以及SEM测试结果表明,四氟硼酸钠参与了石墨电极的成膜过程,改变了SEI膜的组分和形貌。

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  • 收稿日期:  2012-12-28
  • 网络出版日期:  2013-02-11
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