Issue 4, 2021

A reinforced ceramic-coated separator by overall-covered modification of electron-insulated polypyrrole for the safe performance of lithium-ion batteries

Abstract

The safety of lithium-ion batteries (LIBs) is a serious and challenging problem that threatens the applications of large-scale energy storage as well as the daily usage of mobile devices. In this work, we developed a rational design of reinforced ceramic-coated separator by modifying the ceramic-coated separator with an overall-covered layer of electron-insulated polypyrrole throughout the entire separator. As a result, the modified separator shows an improved thermal stability without visible shrinkage at 200 °C, has a better electrolyte wettability and a higher Li+ transference number of 0.56. With these advantages, cells assembled with the modified separators show better safety performance and an improved rate capability.

Graphical abstract: A reinforced ceramic-coated separator by overall-covered modification of electron-insulated polypyrrole for the safe performance of lithium-ion batteries

Supplementary files

Article information

Article type
Research Article
Submitted
22 Here 2020
Accepted
11 Ker. 2020
First published
21 Ker. 2020

Mater. Chem. Front., 2021,5, 1884-1894

A reinforced ceramic-coated separator by overall-covered modification of electron-insulated polypyrrole for the safe performance of lithium-ion batteries

L. Peng, X. Wang, J. Dai, X. Shen, B. Huang, P. Zhang and J. Zhao, Mater. Chem. Front., 2021, 5, 1884 DOI: 10.1039/D0QM00849D

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