| 无机固态电解质的应用技术问题与改性策略 |
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| 引用本文： | 余天玮,邵宗普,刘亚飞,陈彦彬.无机固态电解质的应用技术问题与改性策略[J].矿冶,2023,32(4):64-71. |
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| 作者姓名： | 余天玮 邵宗普 刘亚飞 陈彦彬 |
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| 作者单位： | 北京当升材料科技股份有限公司,北京当升材料科技股份有限公司,北京当升材料科技股份有限公司,北京当升材料科技股份有限公司 |
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| 摘 要： | 为了在储能技术领域实现高能量密度和良好的安全性目标，全固态锂电池(ASSLBs)成为广泛研究的焦点。作为全固态锂电池的主要组成部分，无机固态电解质在全固态锂电池中起着至关重要的作用。在过去的几年里，无机固态电解质的研究已经取得了重大进展。经过几十年的研究努力，各种具有高离子导电性的锂固体电解质相继报道，硫化物固态电解质在高电位下的不稳定性限制了他在超过4.0 V (vs.Li+/Li)的高压正极材料中的应用；氧化物固态电解质在固固接触上的固有刚性限制了其机械加工性能；卤化物固态电解质同硫化物一并具有严重的空气湿度不稳定性，阻碍其大规模应用。针对电池循环过程中，固态电解质与电极匹配的界面副反应问题、材料本征的吸湿性(空气湿度稳定性差)的问题，以及固态电解质与电极界面物理接触失效问题等技术问题及其改进策略进行了总结和探讨，并提出了关于无机固态电解质自身与界面稳定性未来可行的研究方向。
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| 关 键 词： | 全固态锂电池 无机固态电解质 界面稳定性 湿度稳定性 固固接触稳定性 |
| 收稿时间： | 2023/4/11 0:00:00 |
| 修稿时间： | 2023/4/24 0:00:00 |
Research progress on key issues and improvement strategies affecting the application of inorganic solid electrolytes |
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| Yu Tianwei,Shao Zongpu,Liu Yafei and Chen Yanbin.Research progress on key issues and improvement strategies affecting the application of inorganic solid electrolytes[J].Mining & Metallurgy,2023,32(4):64-71. |
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| Authors: | Yu Tianwei Shao Zongpu Liu Yafei and Chen Yanbin |
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| Affiliation: | Beijing Easpring Material Technology Co.,Ltd.,Beijing Easpring Material Technology Co.,Ltd.,Beijing Easpring Material Technology Co.,Ltd.,Beijing Easpring Material Technology Co.,Ltd. |
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| Abstract: | In order to achieve the goals of high energy density and good safety in the field of energy storage technology, all-solid-state lithium batteries (ASSLBs) have become the focus of extensive research. As the main component of all-solid-state lithium batteries, inorganic solid electrolytes play a crucial role in all-solid-state lithium batteries. In the past few years, significant progress has been made in the research of inorganic solid electrolytes. After decades of research efforts, various lithium solid electrolytes with high ionic conductivity have been reported. The instability of sulphide solid electrolytes at high potentials limits their use in high voltage cathode materials above 4.0 V (vs. Li+/Li); the inherent rigidity of oxide solid electrolytes in solid-solid contact limits their machinability; halide solid electrolytes, along with sulphides This paper focuses on the problems associated with the cycling process of the battery. This paper summarizes and discusses the problems of redox side reactions at the interface between solid electrolyte and electrode, the inherent hygroscopicity of the material (poor air humidity stability), and the key influencing factors and improvement strategies for the physical contact failure at the interface between solid electrolyte and electrode during the battery cycle. The future research directions are also proposed. |
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| Keywords: | Solid-state lithium battery solid electrolyte interfacial stability humidity stability solid-solid contact stability |
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