电解质
材料科学
快离子导体
离子电导率
聚合物
电极
化学工程
复合材料
化学
工程类
物理化学
作者
Tao Dai,Siyuan Wu,Yaxiang Lu,Yang Yang,Yuan Liu,Chao Cheng Chang,Xiaohui Rong,Ruijuan Xiao,Junmei Zhao,Yanhui Liu,Weihua Wang,Liquan Chen,Yong‐Sheng Hu
出处
期刊:Nature Energy
[Springer Nature]
日期:2023-09-28
卷期号:8 (11): 1221-1228
被引量:39
标识
DOI:10.1038/s41560-023-01356-y
摘要
Solid-state batteries offer an alternative promising power source for electric vehicles. However, the interfacial mechanical stability of inorganic electrolytes is inferior to that of organic electrolytes. A high stack pressure (several to hundreds of megapascals) is often required to maintain intimate contact with electrodes. Here we report a class of viscoelastic inorganic glass (VIGLAS) to serve as solid electrolytes by simply replacing chlorine of tetrachloroaluminates with oxygen. The VIGLAS possesses high ionic conductivity (~1 mS cm−1 at 30 °C) for both Li+ and Na+, superior chemo-mechanical compatibility with 4.3 V cathodes and the ability to enable pressure-less Li- and Na-based solid-state batteries (<0.1 MPa). The low melting temperature (<160 °C) allows the electrolytes to efficiently infiltrate electrode materials, akin to a liquid battery. Additionally, the deformability of the electrolytes facilitates the feasibility of scale-up through the production of thin films via a rolling process. Solid-state electrolytes lie at the heart of the development of solid-state batteries that offer a promising storage technology. Yong-Sheng Hu and colleagues report a class of viscoelastic inorganic glass featuring merits of both inorganic crystalline electrolytes and organic polymer electrolytes and demonstrate pressure-less Li- and Na-based solid-state batteries.
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