Research and development of solid electrolytes for lithium ion batteries

doi:10.3969/j.issn.1674-8484.2020.04.001

Abstract

Abstract:

Solid-state lithium-ion batteries have become the promising development direction of power batteries due to their high energy density and excellent safety performance. This paper reviews the component and characteristics of solid-state lithium-ion batteries in detail, as well as the types and research progress of solid electrolytes. Moreover, this review also briefly describes the current status of solid-state lithium-ion batteries, and focuses on the garnet-type lithium lanthanum zirconium oxide (Li₇La₃Zr₂O₁₂-based) solid electrolytes which have outstanding advantages in lithium ion conductivity and interface regulation. As one important component of all-solid lithium ion power batteries, the garnet-type Li₇La₃Zr₂O₁₂-based solid electrolytes have good ionic conductivity at room temperature, excellent metal-lithium interface compatibility, and outstanding stability under application environment. The breakthrough and development of solid electrolytes will inevitably provide a huge thrust for the future development of solid-state lithium-ion power batteries and even electric vehicles.

Key words: electric vehicles, solid state lithium ion batteries, solid electrolytes, lithium lanthanum zirconium oxide (Li₇La₃Zr₂O₁₂), safety

CLC Number:

TQ152

MU Daobin, XIE Huilin, WU Borong. Research and development of solid electrolytes for lithium ion batteries[J]. Journal of Automotive Safety and Energy, 2020, 11(4): 415-427.

Figures/Tables 15

References 88

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企业及研究机构	固体电解质	离子电导率/ (S·cm^-1)	性能值/ (Wh·kg^-1)	备注
Bollore	PEO + Li盐	10^-7~10^-5	100	已应用于商业化汽车
宁德时代	PEO +Li盐	10^-7~10^-5	100	制备了安全性能好的实验产品
台湾辉能	非薄膜氧化物	10^-6~10^-3	800 (2020年)	在消费电池领域已商用
Quantumscape	非薄膜氧化物	10^-6~10^-3	400	准备应用于大众汽车
清陶能源	非薄膜氧化物	10^-6~10^-4	400	固态锂电池产线正式投产
Sakti3	薄膜型氧化物	10^-6~10^-3	1000	应用于戴森N526汽车
丰田	硫化物	10^-7~10^-2	400	电动汽车将于东京奥运会亮相
Sony	硫化物	10^-7~10^-2	500	面向移动设备和电动车辆研发

企业及研究机构	固体电解质	离子电导率/ (S·cm^-1)	性能值/ (Wh·kg^-1)	备注
Bollore	PEO + Li盐	10^-7~10^-5	100	已应用于商业化汽车
宁德时代	PEO +Li盐	10^-7~10^-5	100	制备了安全性能好的实验产品
台湾辉能	非薄膜氧化物	10^-6~10^-3	800 (2020年)	在消费电池领域已商用
Quantumscape	非薄膜氧化物	10^-6~10^-3	400	准备应用于大众汽车
清陶能源	非薄膜氧化物	10^-6~10^-4	400	固态锂电池产线正式投产
Sakti3	薄膜型氧化物	10^-6~10^-3	1000	应用于戴森N526汽车
丰田	硫化物	10^-7~10^-2	400	电动汽车将于东京奥运会亮相
Sony	硫化物	10^-7~10^-2	500	面向移动设备和电动车辆研发