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

Jiaying Bi,   Daobin Mu,   Borong Wu,   Jiale Fu,   Hao Yang,   Ge Mu,   Ling Zhang  and  Feng Wu  

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 the merits of them and shows a high ionic conductivity of 2.20×10-3 S cm-1 at 30 ºC. It also exhibits high electrochemical window of 5.1 V (vs. Li/Li+), superior thermal stability and good mechanical properties. When applied in solid state lithium-ion battery using LiFePO4 as the cathode, the battery demonstrates excellent rate capability and high cycling performance. At the current rate of 0.5 C after 150 cycles, the discharge specific capacity still remains 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.

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Publication details

The article was received on 06 Aug 2019, accepted on 01 Dec 2019 and first published on 02 Dec 2019


Article type: Paper
DOI: 10.1039/C9TA08601C
J. Mater. Chem. A, 2019, Accepted Manuscript

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    A hybrid solid electrolyte of Li0.33La0.557TiO3/poly(acylonitrile) membrane infiltrated with 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, 2019, Accepted Manuscript , DOI: 10.1039/C9TA08601C

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