A study on PVDF-PEO-Li7La2.5Ce0.5Zr1.625Bi0.3O12 solid electrolyte with high ionic conductivity and its application in solid-state batteries

Jing Wang; Xin Li; Xinlu Wang; Yang Su; Guixia Liu; Wensheng Yu; Xiangting Dong; Jinxian Wang

Next Materials (Apr 2025)

A study on PVDF-PEO-Li7La2.5Ce0.5Zr1.625Bi0.3O12 solid electrolyte with high ionic conductivity and its application in solid-state batteries

Jing Wang,
Xin Li,
Xinlu Wang,
Yang Su,
Guixia Liu,
Wensheng Yu,
Xiangting Dong,
Jinxian Wang

Affiliations

Jing Wang: School of Chemistry and Environmental Engineering, Changchun University of Science and Technology, Changchun 130022, China
Xin Li: Jilin Junfan Sulfides Material Technology Co. Ltd, Changchun 130022, China
Xinlu Wang: School of Chemistry and Environmental Engineering, Changchun University of Science and Technology, Changchun 130022, China
Yang Su: School of Chemistry and Environmental Engineering, Changchun University of Science and Technology, Changchun 130022, China
Guixia Liu: School of Chemistry and Environmental Engineering, Changchun University of Science and Technology, Changchun 130022, China
Wensheng Yu: School of Chemistry and Environmental Engineering, Changchun University of Science and Technology, Changchun 130022, China
Xiangting Dong: School of Chemistry and Environmental Engineering, Changchun University of Science and Technology, Changchun 130022, China
Jinxian Wang: School of Chemistry and Environmental Engineering, Changchun University of Science and Technology, Changchun 130022, China; Jilin Junfan Sulfides Material Technology Co. Ltd, Changchun 130022, China; Corresponding author at: School of Chemistry and Environmental Engineering, Changchun University of Science and Technology, Changchun 130022, China.

Journal volume & issue: Vol. 7
p. 100360

Abstract

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Polymer/ceramic composite solid electrolyte is an effective solution for the development of flexible solid-state lithium metal batteries. In this paper, a solid-state lithium-ion electrolyte composed of ceramic powder Li7La2.5Ce0.5Zr1.625Bi0.3O12 (LLCZBO) and lithium salt LiTFSI is added to PVDF-PEO. With the addition of 20 wt% LLCZBO, the electrolyte has a high ionic conductivity of 3.67 × 10−4 S·cm−1 at room temperature. The lithium symmetric battery can be cycled for a long time at a current density of 0.1 mA·cm−2. The battery with LiNi0.6Co0.2Mn0.2O2 (NCM) as the cathode can be cycled at room temperature at 0.1 C and obtain high coulombic efficiency. The excellent cycle performance and rate capability can be attributed to the high ionic conductivity of LLCZBO. These advantages indicate that the composite solid electrolyte (CSE) membranes is expected to be a perfect electrolyte for the next generation of solid-state lithium batteries.

Published in Next Materials

ISSN: 2949-8228 (Online)
Publisher: Elsevier
Country of publisher: United Kingdom
LCC subjects: Technology
Website: https://www.sciencedirect.com/journal/next-materials

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