电解质
材料科学
能量密度
化学工程
导线
快离子导体
锂(药物)
纳米技术
化学
工程物理
复合材料
电极
医学
工程类
内分泌学
物理化学
作者
Zhao Jian-Gao,Hongling Peng,Jingru Li,Yu Liu,Yu Zhong,Changzhan Gu,Xiuli Wang,Xinhui Xia,J.P. Tu
标识
DOI:10.1016/j.jechem.2022.07.029
摘要
A facile path to rapidly prepare sulfide electrolyte powders and reduce the thickness of electrolyte layer. Modified ASSLBs with cell-level energy density of 311 Wh kg −1 show excellent cyclic stability. All-solid-state lithium batteries (ASSLBs), utilizing sulfide solid electrolyte, are considered as the promising design on account of their superior safety and high energy density, whereas the time-consuming preparation process of sulfide electrolyte powders and the thickness of electrolyte layer hinder their practical application. Herein, an innovative ultimate-energy mechanical alloying plus rapid thermal processing approach is employed to rapidly synthesize the crystalline Argyrodite-type conductor Li 5.3 PS 4.3 ClBr 0.7 (LPSClBr) with superior ionic conductivity (11.7 mS cm −1 ). Furthermore, to realize the higher energy density of the battery, an ultrathin LPSClBr sulfide electrolyte membrane with superior ionic conductivity of 6.5 mS cm −1 is fabricated with the aid of polytetrafluoroethylene (PTFE) binder and the reinforced cellulose mesh. Moreover, a simple solid electrolyte interphase (SEI) is constructed on the surface of lithium metal to enhance anodic stability. Benefiting from the joint efforts of these merits, the modified ASSLBs with a high cell-level energy density of 311 Wh kg −1 show an excellent cyclic stability. The assembled all-solid-state Li 2 S/Li pouch cell can operate even under the severe conditions of bending and cutting, demonstrating the enormous potential of the sulfide electrolyte membrane for ASSLBs application.
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