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Issue 2, 2020
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A hybrid solid electrolyte Li0.33La0.557TiO3/poly(acylonitrile) membrane infiltrated with a succinonitrile-based electrolyte for solid state lithium-ion batteries

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Abstract

Solid state lithium-ion batteries are considered as one of the most promising next-generation technologies for energy storage. However, the low ionic conductivity of solid electrolytes and interfacial compatibility issues remain huge challenges to solid state lithium-ion batteries. Herein, a novel hybrid solid electrolyte (HSE) membrane consisting of Li0.33La0.557TiO3 (LLTO) ceramic nanorods, poly(acylonitrile) (PAN) and succinonitrile (SN) is constructed. The HSE integrates their merits and shows a high ionic conductivity of 2.20 × 10−3 S cm−1 at 30 °C. It also exhibits a high electrochemical window of 5.1 V (vs. Li/Li+), superior thermal stability and good mechanical properties. When applied in solid state lithium-ion batteries using LiFePO4 as the cathode, the battery demonstrates excellent rate capability and high cycling performance. At a current rate of 0.5C after 150 cycles, the discharge specific capacity still remains at 151 mA h g−1 without decay. This investigation indicates that the HSE membrane could provide a promising solution for high performance solid state lithium-ion batteries.

Graphical abstract: A hybrid solid electrolyte Li0.33La0.557TiO3/poly(acylonitrile) membrane infiltrated with a succinonitrile-based electrolyte for solid state lithium-ion batteries

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Article information


Submitted
06 Aug 2019
Accepted
01 Dec 2019
First published
02 Dec 2019

J. Mater. Chem. A, 2020,8, 706-713
Article type
Paper

A hybrid solid electrolyte Li0.33La0.557TiO3/poly(acylonitrile) membrane infiltrated with a succinonitrile-based electrolyte for solid state lithium-ion batteries

J. Bi, D. Mu, B. Wu, J. Fu, H. Yang, G. Mu, L. Zhang and F. Wu, J. Mater. Chem. A, 2020, 8, 706
DOI: 10.1039/C9TA08601C

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