Volume 19, Issue 39 2301572
Research Article

In Situ Construction Channels of Lithium-Ion Fast Transport and Uniform Deposition to Ensure Safe High-Performance Solid Batteries

Yangmingyue Zhao

Yangmingyue Zhao

School of Materials Science and Chemical Engineering, Harbin University of Science and Technology, Harbin, 150040 China

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Libo Li

Corresponding Author

Libo Li

School of Materials Science and Chemical Engineering, Harbin University of Science and Technology, Harbin, 150040 China

E-mail: [email protected]

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Yuhang Shan

Yuhang Shan

School of Materials Science and Chemical Engineering, Harbin University of Science and Technology, Harbin, 150040 China

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Da Zhou

Da Zhou

School of Materials Science and Chemical Engineering, Harbin University of Science and Technology, Harbin, 150040 China

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Xiaochuan Chen

Xiaochuan Chen

School of Materials Science and Chemical Engineering, Harbin University of Science and Technology, Harbin, 150040 China

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Wenjun Cui

Wenjun Cui

School of Materials Science and Chemical Engineering, Harbin University of Science and Technology, Harbin, 150040 China

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Heng Wang

Heng Wang

School of Materials Science and Chemical Engineering, Harbin University of Science and Technology, Harbin, 150040 China

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First published: 26 May 2023
Citations: 7

Abstract

Solid-state lithium-ion batteries (SLIBs) are the promising development direction for future power sources because of their high energy density and reliable safety. To optimize the ionic conductivity at room temperature (RT) and charge/discharge performance to obtain reusable polymer electrolytes (PEs), polyvinylidene fluoride (PVDF), and poly(vinylidene fluoride-hexafluoro propylene) (P(VDF-HFP)) copolymer combined with polymerized methyl methacrylate (MMA) monomers are used as substrates to prepare PE (LiTFSI/OMMT/PVDF/P(VDF-HFP)/PMMA [LOPPM]). LOPPM has interconnected lithium-ion 3D network channels. The organic-modified montmorillonite (OMMT) is rich in the Lewis acid centers, which promoted lithium salt dissociation. LOPPM PE possessed high ionic conductivity of 1.1 × 10−3 S cm−1 and a lithium-ion transference number of 0.54. The capacity retention of the battery remained 100% after 100 cycles at RT and 0.5 C. The initial capacity of one with the second-recycled LOPPM PE is 123.9 mAh g−1. This work offered a feasible pathway for developing high-performance and reusable LIBs.

Conflict of Interest

The authors declare no conflict of interest.

Data Availability Statement

The data that support the findings of this study are available from the corresponding author upon reasonable request.

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