Issue 35, 2023

A propanesultone-based polymer electrolyte for high-energy solid-state lithium batteries with lithium-rich layered oxides

Abstract

Polymer electrolyte-based solid-state lithium batteries (SSLBs) with lithium-rich layered oxide (LLO) cathode materials can provide high energy density and safety. However, the development of these batteries is hindered by the poor anti-oxidation ability of polymer electrolytes. Herein, a propanesultone-based polymer electrolyte (PPS-PE) is designed, and a wide electrochemical stability window (∼5.0 V vs. Li+/Li) and high ion transference number (∼0.78) at 25 °C can be achieved. The strong anti-oxidation ability of PPS-PE is contributed by the design of the chain-like molecular structure, and the hydrogen bond interactions are beneficial for inhibiting the anion movement of Li salt. The PPS-PE-based SSLBs with LLO cathode materials show characteristic charge/discharge profiles with a high initial discharge capacity of ∼270 mA h g−1 and good cycling stability at 25 °C. Therefore, this work not only reports a novel polymer electrolyte to couple with high-voltage cathodes but also promotes the application of LLO cathode materials in high-energy SSLBs.

Graphical abstract: A propanesultone-based polymer electrolyte for high-energy solid-state lithium batteries with lithium-rich layered oxides

Supplementary files

Article information

Article type
Paper
Submitted
01 apr 2023
Accepted
07 aug 2023
First published
12 aug 2023

J. Mater. Chem. A, 2023,11, 19118-19127

A propanesultone-based polymer electrolyte for high-energy solid-state lithium batteries with lithium-rich layered oxides

X. Yin, S. Zhao, Z. Lin, X. Guo, C. Lou, S. Liu, B. Wang, P. Ding, M. Tang, L. Wu and H. Yu, J. Mater. Chem. A, 2023, 11, 19118 DOI: 10.1039/D3TA01968C

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