Issue 39, 2024

Synthesis of a crosslinked ether-based polymer for high-performance semi-solid lithium metal batteries via in situ integration

Abstract

In situ ring-opening polymerization of ether-based monomers has shown promising application in solid-state lithium metal batteries owing to their positive lithium compatibility, mild reaction conditions, and facile preparation. However, typical poly(1,3-dioxolane) (PDOL) based electrolyte still struggles with low ionic conductivity, narrow electrochemical window, and poor thermal stability, which greatly retard its further progress. Herein, we constructed a crosslinked PDOL semi-solid electrolyte initiated by a three-armed crosslinker and high voltage resistant fluorinated solvents, which shows favourable stability toward lithium metal (lithium plating/stripping stably operating for 2700 h at 0.2 mA cm−2 with no significant polarization growth) and a high electrochemical oxidation window of up to 4.6 V. A lithium metal coin cell using this crosslinked semi-solid electrolyte equipped with LFP expresses excellent cycling stability with a capacity retention of 88% for 1000 cycles at 1C. A 50 mA h pouch cell with an NCM811 cathode exhibited favourable working ability. Meanwhile, the crosslinked electrolyte demonstrated better solid-state characteristics and thermal stability compared with a long-chain electrolyte. This work provides a prospective reference for the application of ether-based electrolyte in high safety and high energy density lithium metal batteries.

Graphical abstract: Synthesis of a crosslinked ether-based polymer for high-performance semi-solid lithium metal batteries via in situ integration

Supplementary files

Article information

Article type
Paper
Submitted
13 Jul 2024
Accepted
03 Sep 2024
First published
09 Sep 2024
This article is Open Access
Creative Commons BY-NC license

J. Mater. Chem. A, 2024,12, 27043-27052

Synthesis of a crosslinked ether-based polymer for high-performance semi-solid lithium metal batteries via in situ integration

D. Yang, Y. Yang, Y. Cui, Y. Sun and T. Zhang, J. Mater. Chem. A, 2024, 12, 27043 DOI: 10.1039/D4TA04857A

This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence. You can use material from this article in other publications, without requesting further permission from the RSC, provided that the correct acknowledgement is given and it is not used for commercial purposes.

To request permission to reproduce material from this article in a commercial publication, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party commercial publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements