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LiBF_4/LiODFB混合盐电解液的低温性能
张丽娟; 周园; 孙艳霞; 胡树青
2018-06-25
Source Publication电池
Volume48Issue:03Pages:138-141
Other Abstract

研究四氟硼酸锂(LiBF_4)和二氟草酸硼酸锂(LiODFB)混合锂盐电解液用于磷酸铁锂(LiFePO4)锂离子电池时的低温-20℃性能。探讨电导率与电解液组成、温度的关系;通过循环伏安、充放电、倍率性能及电化学阻抗谱(EIS)测试,比较不同电解液体系中LiFePO_4正极在25℃和-20℃的放电比容量、循环稳定性等。在25℃和-20℃下于2.5~4.2 V充放电,LiFePO_4电极在LiBF_4/Li ODFB基电解液体系中的电化学性能较好:在25℃时以1.0 C倍率充放电,混合盐基电解液电池的首次放电比容量为140 m Ah/g,优于六氟磷酸锂(Li PF6)基电解液的130.5 m Ah/g;-20℃时0.1 C倍率下,首次放电比容量为101.7 m Ah/g,100次循环的容量保持率为86.62%,优于Li PF6基电解液的97.4 m Ah/g和60.57%。

Keyword四氟硼酸锂(Libf4) 二氟草酸硼酸锂(Liodfb) 电解液 锂离子电池 磷酸铁锂(Lifepo4) 低温
Language中文
Document Type期刊论文
Identifierhttp://ir.isl.ac.cn/handle/363002/6810
Collection中国科学院青海盐湖研究所
Recommended Citation
GB/T 7714
张丽娟,周园,孙艳霞,等. LiBF_4/LiODFB混合盐电解液的低温性能[J]. 电池,2018,48(03):138-141.
APA 张丽娟,周园,孙艳霞,&胡树青.(2018).LiBF_4/LiODFB混合盐电解液的低温性能.电池,48(03),138-141.
MLA 张丽娟,et al."LiBF_4/LiODFB混合盐电解液的低温性能".电池 48.03(2018):138-141.
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