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Title: Improved Stability and Cyclability of Ceramic Solid Electrolyte by Coating Polymer

Abstract

Rechargeable all-solid-state lithium (Li) metal batteries show better safety and energy density compared to commercial Li-ion batteries using liquid electrolyte. As the key component of Li metal batteries, ceramic solid-state electrolyte has attracted great interest because of its high ion conductivity and great potential in interfacing with Li metal. Ceramic electrolyte has a more stable interface with Li metal than liquid electrolyte, but chemical reaction and Li dendrite growth at the electrolyte/Li interface are still significant, which causes device degradation and failure by cycling of Li plating and stripping. Unlike ceramic electrolyte, polymer electrolyte has a relatively stable interface with Li metal and better mechanical flexibility. Therefore, we introduced a polymer electrolyte coating to protect the ceramic electrolyte from direct contact with Li metal. The galvanotactic cycling Li plating/striping data on the devices with (without) the coating illustrates increased (decreased) overall conductivity and cyclability of the test cell by the cycling. Nanometer-scale ionic-transport imaging, based on atomic force microscopy, shows that cycling degrades the ceramic-only electrolyte by partially blocking ionic transport in areas; in contrast, cycling on the polymer-coated electrolyte improves ionic conductivity. Compared with the ceramic-only electrolyte, this novel polymer electrolyte coating on ceramic electrolyte shows less degradation whenmore » in contact with Li metal.« less

Authors:
 [1];  [1]; ORCiD logo [1];  [1];  [2];  [3];  [1]
  1. National Renewable Energy Lab. (NREL), Golden, CO (United States)
  2. Colorado School of Mines, Golden, CO (United States)
  3. Univ. of Colorado, Boulder, CO (United States)
Publication Date:
Research Org.:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Org.:
USDOE National Renewable Energy Laboratory (NREL), Laboratory Directed Research and Development (LDRD) Program
OSTI Identifier:
1598976
Report Number(s):
[NREL/JA-5K00-76018]
[Journal ID: ISSN 1945-7111]
Grant/Contract Number:  
[AC36-08GO28308]
Resource Type:
Accepted Manuscript
Journal Name:
Journal of the Electrochemical Society (Online)
Additional Journal Information:
[Journal Name: Journal of the Electrochemical Society (Online); Journal Volume: 167; Journal Issue: 2]; Journal ID: ISSN 1945-7111
Publisher:
IOP Publishing
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE; polymer; ceramic; solid-state lithium-ion battery

Citation Formats

Yin, Yanli, Jiang, Chun Sheng, Guthrey, Harvey L., Xiao, Chuanxiao, Seitzman, Natalie, Ban, Chunmei, and Al-Jassim, Mowafak M. Improved Stability and Cyclability of Ceramic Solid Electrolyte by Coating Polymer. United States: N. p., 2020. Web. doi:10.1149/1945-7111/ab68c7.
Yin, Yanli, Jiang, Chun Sheng, Guthrey, Harvey L., Xiao, Chuanxiao, Seitzman, Natalie, Ban, Chunmei, & Al-Jassim, Mowafak M. Improved Stability and Cyclability of Ceramic Solid Electrolyte by Coating Polymer. United States. doi:10.1149/1945-7111/ab68c7.
Yin, Yanli, Jiang, Chun Sheng, Guthrey, Harvey L., Xiao, Chuanxiao, Seitzman, Natalie, Ban, Chunmei, and Al-Jassim, Mowafak M. Wed . "Improved Stability and Cyclability of Ceramic Solid Electrolyte by Coating Polymer". United States. doi:10.1149/1945-7111/ab68c7.
@article{osti_1598976,
title = {Improved Stability and Cyclability of Ceramic Solid Electrolyte by Coating Polymer},
author = {Yin, Yanli and Jiang, Chun Sheng and Guthrey, Harvey L. and Xiao, Chuanxiao and Seitzman, Natalie and Ban, Chunmei and Al-Jassim, Mowafak M.},
abstractNote = {Rechargeable all-solid-state lithium (Li) metal batteries show better safety and energy density compared to commercial Li-ion batteries using liquid electrolyte. As the key component of Li metal batteries, ceramic solid-state electrolyte has attracted great interest because of its high ion conductivity and great potential in interfacing with Li metal. Ceramic electrolyte has a more stable interface with Li metal than liquid electrolyte, but chemical reaction and Li dendrite growth at the electrolyte/Li interface are still significant, which causes device degradation and failure by cycling of Li plating and stripping. Unlike ceramic electrolyte, polymer electrolyte has a relatively stable interface with Li metal and better mechanical flexibility. Therefore, we introduced a polymer electrolyte coating to protect the ceramic electrolyte from direct contact with Li metal. The galvanotactic cycling Li plating/striping data on the devices with (without) the coating illustrates increased (decreased) overall conductivity and cyclability of the test cell by the cycling. Nanometer-scale ionic-transport imaging, based on atomic force microscopy, shows that cycling degrades the ceramic-only electrolyte by partially blocking ionic transport in areas; in contrast, cycling on the polymer-coated electrolyte improves ionic conductivity. Compared with the ceramic-only electrolyte, this novel polymer electrolyte coating on ceramic electrolyte shows less degradation when in contact with Li metal.},
doi = {10.1149/1945-7111/ab68c7},
journal = {Journal of the Electrochemical Society (Online)},
number = [2],
volume = [167],
place = {United States},
year = {2020},
month = {1}
}

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