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Thin Solid Electrolyte Layers Enabled by Nanoscopic Polymer Binding

delete2020-02-26
delete41
PRE
AI
Y
Yejing Li
王雪锋 (Xuefeng Wang)
H
Hongyao Zhou
X
Xing Xing
A
Abhik Banerjee
J
John Holoubek
H
Haodong Liu
Y
Ying Shirley Meng
P
Ping Liu *
DOI:10.1021/acsenergylett.0c00040delete
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Abstract

Abstract

En 中文
To achieve high-energy all-solid-state batteries (ASSBs), solid-state electrolytes (SE) must be thin, mechanically robust, and possess the ability to form low resistance interfaces with electrode materials. Embedding an inorganic SE into an organic polymer combines the merits of high conductivity and flexibility. However, the performance of such an SE-in-polymer matrix (SEPM) is highly dependent on the microstructure and interactions between the organic and inorganic components. We report on the synthesis of a free-standing, ultrathin (60 mu m) SEPM from a solution of lithium polysulfide, phosphorus sulfide, and ethylene sulfide (ES), where the polysulfide triggers the in situ polymerization of ES and the formation of Li3PS4. Reactant ratios were optimized to achieve a room-temperature conductivity of 2 x 10(-5) S cm(-1). Cryogenic electron microscopy confirmed a uniform nanoscopic distribution of beta-Li3PS4 and PES (polyethylene sulfide). This work presents a facile route to the scalable fabrication of ASSBs with promising cycling performance and low electrolyte loading.
Keywords:
BATTERIES
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Journal

ACS Energy Letters cover
ACS Energy Letters
IF:
18.2
Papers:
5.2K
Citations:
6.6W

Organization

University of California System cover
University of California System
Scholars:
37.5W
Papers: 33.7W
Citations: 6.6K