A promising composite solid electrolyte of garnet-type LLZTO and succinonitrile in thermal polyurethane matrix for all-solid-state lithium-ion batteries

Zhiguang Zhao; Borong Wu; Yuanxing Zhang; Jingwen Cui; Ling Zhang; Yuefeng Su; Feng Wu

Electrochemistry Communications (May 2023)

A promising composite solid electrolyte of garnet-type LLZTO and succinonitrile in thermal polyurethane matrix for all-solid-state lithium-ion batteries

Zhiguang Zhao,
Borong Wu,
Yuanxing Zhang,
Jingwen Cui,
Ling Zhang,
Yuefeng Su,
Feng Wu

Affiliations

Zhiguang Zhao: Beijing Key Laboratory of Environment Science and Engineering, School of Material Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
Borong Wu: Beijing Key Laboratory of Environment Science and Engineering, School of Material Science and Engineering, Beijing Institute of Technology, Beijing 100081, China; Chongqing Innovation Center of Beijing Institute of Technology, Chongqing 401120, China; Beijing Higher Institution Engineering Research Center of Power Battery and Chemical Energy Materials, Beijing Institute of Technology, Beijing 100081, China; Corresponding authors at: Beijing Key Laboratory of Environment Science and Engineering, School of Material Science and Engineering, Beijing Institute of Technology, Beijing 100081, China.
Yuanxing Zhang: Beijing Key Laboratory of Environment Science and Engineering, School of Material Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
Jingwen Cui: Beijing Key Laboratory of Environment Science and Engineering, School of Material Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
Ling Zhang: Beijing Key Laboratory of Environment Science and Engineering, School of Material Science and Engineering, Beijing Institute of Technology, Beijing 100081, China; Chongqing Innovation Center of Beijing Institute of Technology, Chongqing 401120, China; Corresponding authors at: Beijing Key Laboratory of Environment Science and Engineering, School of Material Science and Engineering, Beijing Institute of Technology, Beijing 100081, China.
Yuefeng Su: Beijing Key Laboratory of Environment Science and Engineering, School of Material Science and Engineering, Beijing Institute of Technology, Beijing 100081, China; Chongqing Innovation Center of Beijing Institute of Technology, Chongqing 401120, China
Feng Wu: Beijing Key Laboratory of Environment Science and Engineering, School of Material Science and Engineering, Beijing Institute of Technology, Beijing 100081, China; Chongqing Innovation Center of Beijing Institute of Technology, Chongqing 401120, China

Journal volume & issue: Vol. 150
p. 107472

Abstract

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For solid-state electrolyte in lithium-ion batteries, high crystal boundary impedance leads to tough electrolyte-electrode interfacial issues. Here, we introduce garnet Li6.4La3Zr1.4Ta0.6O12 (LLZTO) nanoparticles and succinonitrile (SN) into thermal polyurethane (TPU) to fabricate a composite solid-state electrolyte (TPU/LLZTO/SN), achieving high ionic conductivity of 6.452 × 10−4 S cm−1. The TPU polymer with specific soft and hard segments allows lithium ions fast transport and holds good mechanical strength as the electrolyte matrix. The ionic conductor LLZTO further improves the ionic conductivity and mechanical property of the composite electrolyte membrane. Additional SN supplies the electrolyte’ wide electrochemical stabilization window, and enhances the metallic lithium compatibility of the TPU matrix. As a result, the as prepared TPU/LLZTO/SN electrolyte presents high lithium ions transference number of 0.64, and also good mechanical property.

Published in Electrochemistry Communications

ISSN: 1388-2481 (Print); 1873-1902 (Online)
Publisher: Elsevier
Country of publisher: United States
LCC subjects: Technology: Chemical technology: Industrial electrochemistry; Science: Chemistry
Website: https://www.journals.elsevier.com/electrochemistry-communications

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