Issue 22, 2023

A quasi-solid polymer electrolyte initiated by two-dimensional functional nanosheets for stable lithium metal batteries

Abstract

Lithium-metal batteries (LMBs) are expected to serve as next-generation energy storage systems due to their high theoretical energy density. However, their practical application is largely impeded due to the safety risks that arise from the uncontrollable Li dendrite growth and the high reactivity between high flammability liquid organic electrolytes and metallic lithium. Here, we report a highly safe quasi-solid gel polymer electrolyte (GPE) to achieve stable cycling of lithium metal with high coulombic efficiency, and it is prepared by in situ polymerization of 1,3-dioxolane (DOL) assisted by multi-functional H3Sb3P2O14 sheets. H3Sb3P2O14 acts as an initiator and a functional additive simultaneously that promotes the formation of a stable solid electrolyte interface (SEI) layer, thereby regulating the uniform deposition of Li and improving the Li plating/stripping efficiency. The obtained quasi-solid GPE exhibits high ionic conductivity and enhanced oxidative stability, favoring a stabilized electrode/electrolyte interface. Using the GPE, the electrochemical performance of the quasi-solid-state LMB with a LiFePO4 cathode and a lithium metal anode is significantly improved, delivering a discharge capacity of 125.7 mA h g−1 even after 1000 cycles. Therefore, the high reversibility and remarkable battery cyclability suggest that such a GPE is a promising choice of electrolyte for LMBs, while its facile preparation makes its large-scale application possible in the future.

Graphical abstract: A quasi-solid polymer electrolyte initiated by two-dimensional functional nanosheets for stable lithium metal batteries

Supplementary files

Article information

Article type
Paper
Submitted
13 Ots. 2023
Accepted
29 Api. 2023
First published
05 Mai. 2023

Nanoscale, 2023,15, 9700-9709

A quasi-solid polymer electrolyte initiated by two-dimensional functional nanosheets for stable lithium metal batteries

Y. Zhang, J. Huang, G. Wang, Y. Dou, D. Yuan, L. Lin, K. Wu, H. K. Liu, S. Dou and C. Wu, Nanoscale, 2023, 15, 9700 DOI: 10.1039/D3NR00683B

To request permission to reproduce material from this article, 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 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