Issue 5, 2021

A controllable thermal-sensitivity separator with an organic–inorganic hybrid interlayer for high-safety lithium-ion batteries

Abstract

A bifunctional organic–inorganic hybrid separator (PAN/EVA@SiO2/PAN, PESP) for lithium-ion batteries was successfully fabricated by a facile electrospinning approach. This PESP separator shows an appropriate shutdown behavior at 120 °C by incorporating a suitable amount of SiO2 into the EVA and can maintain dimensional integrity at 200 °C because of the high thermal stability of PAN as a supporting scaffold. Besides, the graphite/LiFePO4 full cell using the PESP separator exhibits enhanced rate performance as a consequence of the good electrolyte wettability of the separator compared to the traditional Celgard separator. These attractive characteristics make the PESP membrane act as a promising separator for next-generation high-safety batteries.

Graphical abstract: A controllable thermal-sensitivity separator with an organic–inorganic hybrid interlayer for high-safety lithium-ion batteries

Article information

Article type
Research Article
Submitted
17 Des 2020
Accepted
26 Jan 2021
First published
26 Jan 2021

Mater. Chem. Front., 2021,5, 2313-2319

A controllable thermal-sensitivity separator with an organic–inorganic hybrid interlayer for high-safety lithium-ion batteries

H. Chen, Y. Fang, X. Liu, X. Jiang, F. Zhong, H. Yang, X. Ai and Y. Cao, Mater. Chem. Front., 2021, 5, 2313 DOI: 10.1039/D0QM01061H

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