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Polymers
Volume 14
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10.3390/polym14101950
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Article

Incorporation of Poly(Ionic Liquid) with PVDF-HFP-Based Polymer Electrolyte for All-Solid-State Lithium-Ion Batteries

by
Zhefei Ruan
1,
Yuzhe Du
1,
Hongfei Pan
2,
Ruiming Zhang
3,
Fangfang Zhang
4,*,
Haolin Tang
1,2 and
Haining Zhang
1,2,*
1
State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China
2
Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory, Foshan 528200, China
3
Guangdong Hydrogen Energy Institute of WHUT, Foshan 528000, China
4
School of Nuclear Technology and Chemistry & Biology, Hubei University of Science and Technology, Nr. 88 Xianning Avenue, Xianning 437100, China
*
Authors to whom correspondence should be addressed.
Polymers 2022, 14(10), 1950; https://doi.org/10.3390/polym14101950
Submission received: 2 April 2022 / Revised: 21 April 2022 / Accepted: 21 April 2022 / Published: 11 May 2022
(This article belongs to the Section Polymer Chemistry)
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Abstract

A solid-state polymer electrolyte membrane is formed by blending poly(vinylidene fluoride-co-hexafluoropropylene) with the synthesized copolymer of poly(methyl methacrylate-co-1-vinyl-3-butyl-imidazolium bis(trifluoromethanesulfonyl)imide, in which lithium bis(trifluoromethane)sulfonimide molecules are applied as the source of lithium ions. The accordingly formed membrane that contains 14 wt.% of P(MMA-co-VBIm-TFSI), 56 wt.% of PVDF-HFP, and 30 wt.% of LiTFSI manifests the best electrochemical properties, achieving an ionic conductivity of 1.11 × 10−4 S·cm−1 at 30 °C and 4.26 × 10−4 S·cm−1 at 80 °C, a Li-ion transference number of 0.36, and a wide electrochemical stability window of 4.7 V (vs. Li/Li+). The thus-assembled all-solid-state lithium-ion battery of LiFePO4/SPE/Li delivers a discharge specific capacity of 148 mAh·g−1 in the initial charge–discharge cycle at 0.1 C under 60 °C. The capacity retention of the cell is 95.2% after 50 cycles at 0.1 C and the Coulombic efficiency remains close to 100% during the cycling process.
Keywords: solid polymer electrolyte; all-solid-state; lithium-ion battery; ion conduction; polymer composite solid polymer electrolyte; all-solid-state; lithium-ion battery; ion conduction; polymer composite

Share and Cite

MDPI and ACS Style

Ruan, Z.; Du, Y.; Pan, H.; Zhang, R.; Zhang, F.; Tang, H.; Zhang, H. Incorporation of Poly(Ionic Liquid) with PVDF-HFP-Based Polymer Electrolyte for All-Solid-State Lithium-Ion Batteries. Polymers 2022, 14, 1950. https://doi.org/10.3390/polym14101950

AMA Style

Ruan Z, Du Y, Pan H, Zhang R, Zhang F, Tang H, Zhang H. Incorporation of Poly(Ionic Liquid) with PVDF-HFP-Based Polymer Electrolyte for All-Solid-State Lithium-Ion Batteries. Polymers. 2022; 14(10):1950. https://doi.org/10.3390/polym14101950

Chicago/Turabian Style

Ruan, Zhefei, Yuzhe Du, Hongfei Pan, Ruiming Zhang, Fangfang Zhang, Haolin Tang, and Haining Zhang. 2022. "Incorporation of Poly(Ionic Liquid) with PVDF-HFP-Based Polymer Electrolyte for All-Solid-State Lithium-Ion Batteries" Polymers 14, no. 10: 1950. https://doi.org/10.3390/polym14101950

APA Style

Ruan, Z., Du, Y., Pan, H., Zhang, R., Zhang, F., Tang, H., & Zhang, H. (2022). Incorporation of Poly(Ionic Liquid) with PVDF-HFP-Based Polymer Electrolyte for All-Solid-State Lithium-Ion Batteries. Polymers, 14(10), 1950. https://doi.org/10.3390/polym14101950

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