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Novel Bifunctional Thermo-Sensitive Poly(Lactic Acid)@Poly(Butylene Succinate) Core-Shell Fibrous Separator prepared by Coaxial Electrospun route for Safe Lithium-Ion Battery

Abstract

The safety, energy and power density are critical issues for successful applications of lithium-ion batteries (LIBs) in portable electric devices, electric vehicles (EV) and large-scale energy storage systems. The separator is a key component to ensure the safety and improve the performance of LIBs. Herein, a thermally-induced shutdown separator of poly(lactic acid)@poly(butylene succinate) (PLA@PBS) is successfully fabricated by a facile coaxial electrospun process. The electrospun PLA@PBS separator possesses synchronous characteristics of high thermal sensitivity (prompt shutdown response) and high thermal stability (structural integrity) as well as excellent wettability to liquid electrolytes. The full-cells using the bifunctional PLA@PBS separators exhibit superior cycling performance and rate capability compared to those using the commercial Celgard separators. These attractive characteristics endow the PLA@PBS membrane a promising separator for high safety and high energy/power density LIBs.

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Publication details

The article was received on 13 Sep 2017, accepted on 12 Oct 2017 and first published on 12 Oct 2017


Article type: Paper
DOI: 10.1039/C7TA08063H
Citation: J. Mater. Chem. A, 2017, Accepted Manuscript
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    Novel Bifunctional Thermo-Sensitive Poly(Lactic Acid)@Poly(Butylene Succinate) Core-Shell Fibrous Separator prepared by Coaxial Electrospun route for Safe Lithium-Ion Battery

    X. Jiang, L. Xiao, X. Ai, H. X. Yang and Y. Cao, J. Mater. Chem. A, 2017, Accepted Manuscript , DOI: 10.1039/C7TA08063H

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