Isotropic cell design enables low-pressure lithium metal solid-state batteries

IF 4.7 3区 工程技术 Q2 ELECTROCHEMISTRY
William Fitzhugh , Luhan Ye , Xin Li
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引用次数: 0

Abstract

Solid-state batteries that utilize sulfide-based solid-electrolytes, such as the argyrodite Li6PS5Cl, have become one of the most promising directions for next-generation energy storage. However, one remaining technical challenge for such materials has been the requirement of large pressures during operation. This challenge grows as the size of the cells increase as the pressure must be uniformly distributed over a larger-and-larger area. In this work, we introduce an isotropic cell design to pressurize the cell with perfect homogeneity, which is ensured by using a fluid pressurization medium. By achieving perfect homogeneity, the magnitude of the pressure necessary to stabilize the material is greatly reduced. Using such an isotropic cell design, lithium-metal solid-state pouch cells achieve remarkable extreme-fast-charging performance even at a low-pressure of only 2 MPa.

Abstract Image

各向同性电池设计实现了低压锂金属固态电池
利用硫化物基固体电解质(如文石 Li6PS5Cl)的固态电池已成为下一代能源存储最有前途的方向之一。然而,这类材料仍然面临的一个技术挑战是在运行过程中需要很大的压力。随着电池尺寸的增大,压力必须均匀地分布在越来越大的面积上,因此这一挑战也越来越大。在这项工作中,我们引入了一种各向同性电池设计,通过使用流体加压介质确保电池加压完全均匀。通过实现完美的均匀性,大大降低了稳定材料所需的压力大小。利用这种各向同性的电芯设计,锂金属固态袋式电芯即使在只有 2 兆帕的低压下也能实现卓越的极速充电性能。
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来源期刊
Electrochemistry Communications
Electrochemistry Communications 工程技术-电化学
CiteScore
8.50
自引率
3.70%
发文量
160
审稿时长
1.2 months
期刊介绍: Electrochemistry Communications is an open access journal providing fast dissemination of short communications, full communications and mini reviews covering the whole field of electrochemistry which merit urgent publication. Short communications are limited to a maximum of 20,000 characters (including spaces) while full communications and mini reviews are limited to 25,000 characters (including spaces). Supplementary information is permitted for full communications and mini reviews but not for short communications. We aim to be the fastest journal in electrochemistry for these types of papers.
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