无机固态锂离子电池电解质的研究进展

doi:10.12028/j.issn.2095-4239.2019.0056

摘要/Abstract

摘要： 目前，商品化的锂离子电池电解液主要以碳酸乙烯酯、碳酸二甲酯和碳酸甲乙酯等有机溶剂为溶剂，在电池使用过程中，存在电解液分解、锂枝晶生成和漏液等问题，从而影响电池的稳定性和安全性。无机固态锂电池电解质具有热稳定性高、电化学性能稳定、与高电压正极材料相容性好、安全性高及环境友好等优点，是目前储能领域研究的一个热点。研究和开发具有高离子电导率的无机固态电解质是促进其在电池中应用的关键和难点，本文综述了几类目前研究较多的LiPON型、钙钛矿型、石榴石型、LISICON型电解质，重点关注了其在离子电导率方面的研究及应用进展。

关键词: 无机固态电解质, 离子电导率, 锂离子电池

Abstract: So far, electrolytes used in the commercialized lithium ion batteries are mainly based on liquid organic solvents, including ethylene carbonate, methyl-carbonate and propylene carbonate. During the charge/discharge process, decomposition of the electrolyte, uncontrollable formation of lithium dendrites and the leakage of the liquid electrolyte may occur, leading to the low stability and safety issues of the lithium ion batteries. Inorganic solid electrolytes have become a hot topic in the field of energy storage due to many advantages, such as high thermal stability, high electrochemical stability, being compatible with higher potential cathode materials, safety and environmental friendliness. The development of inorganic solid electrolytes with high ion conductivity is the focus and also challenge. In this paper, the last development in ion conductivity of inorganic solid electrolytes, such as LiPON, GARNET, Perovskite and LISICON are reviewed, and the application of these electrolytes in solid-state lithium batteries is summarized.

Key words: inorganic solid-state electrolyte, ion conductivity, lithium-ion batteries

中图分类号:

TM912

杨建锋, 李林艳, 吴振岳, 王开学. 无机固态锂离子电池电解质的研究进展[J]. 储能科学与技术, 2019, 8(5): 829-837.

YANG Jianfeng, LI Linyan, WU Zhenyue, WANG Kaixue. Progress of inorganic solid electrolyte for lithium ion batteries[J]. Energy Storage Science and Technology, 2019, 8(5): 829-837.

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