Volume 17, Issue 51 2104365
Research Article

Polyphenylene Sulfide-Based Solid-State Separator for Limited Li Metal Battery

Haitao Zhou

Corresponding Author

Haitao Zhou

School of Materials Science and Engineering, Jiangsu University, Jiangsu Province, 212013 P. R. China

E-mail: [email protected]; [email protected]; [email protected]

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Chongchen Yu

Chongchen Yu

School of Materials Science and Engineering, Jiangsu University, Jiangsu Province, 212013 P. R. China

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Hongquan Gao

Hongquan Gao

School of Materials Science and Engineering, Jiangsu University, Jiangsu Province, 212013 P. R. China

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Jian-Chun Wu

Corresponding Author

Jian-Chun Wu

School of Materials Science and Engineering, Jiangsu University, Jiangsu Province, 212013 P. R. China

Key Laboratory of Radiation Physics and Technology, Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University, Chengdu, 610064 P. R. China

E-mail: [email protected]; [email protected]; [email protected]

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Dong Hou

Dong Hou

School of Materials Science and Engineering, Jiangsu University, Jiangsu Province, 212013 P. R. China

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Menghao Liu

Menghao Liu

School of Materials Science and Engineering, Jiangsu University, Jiangsu Province, 212013 P. R. China

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Minghui Zhang

Minghui Zhang

Amprius (Wuxi) Co., Ltd., Wuxi, Jiangsu Province, 214187 P. R. China

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Zifu Xu

Zifu Xu

Amprius (Wuxi) Co., Ltd., Wuxi, Jiangsu Province, 214187 P. R. China

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Jianhong Yang

Jianhong Yang

School of Materials Science and Engineering, Jiangsu University, Jiangsu Province, 212013 P. R. China

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De Chen

Corresponding Author

De Chen

Department of Chemical Engineering, Norwegian University of Science and Technology, Trondheim, N-7491 Norway

E-mail: [email protected]; [email protected]; [email protected]

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First published: 02 November 2021
Citations: 9

Abstract

The urgent need for high energy batteries is pushing the battery studies toward the Li metal and solid-state direction, and the most central question is finding proper solid-state electrolyte (SSE). So far, the recently studied electrolytes have obvious advantages and fatal weaknesses, resulting in indecisive plans for industrial production. In this work, a thin and dense lithiated polyphenylene sulfide-based solid state separator (PPS-SSS) prepared by a solvent-free process in pilot stage is proposed. Moreover, the PPS surface is functionalized to immobilize the anions, increasing the Li+ transference number to 0.8−0.9, and widening the electrochemical potential window (EPW > 5.1 V). At 25 °C, the PPS-SSS exhibits high intrinsic Li+ diffusion coefficient and ionic conductivity (>10−4 S cm−1), and Li+ transport rectifying effect, resulting in homogenous Li-plating on Cu at 2 mA cm−2 density. Based on the limited Li-plated Cu anode or anode-free Cu, high loadings cathode and high voltage, the Li-metal batteries (LMBs) with polyethylene (PE) protected PPS-SSSs deliver high energy and power densities (>1000 Wh L−1 and 900 W L−1) with >200 cycling life and high safety, exceeding those of state-of-the-art Li-ion batteries. The results promote the Li metal battery toward practicality.

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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