Cellulosic materials-enhanced sandwich structure-like separator via electrospinning towards safer lithium-ion battery

Shuo Wang; Dalun Zhang; Ziqiang Shao; Siyuan Liu

doi:10.1016/j.carbpol.2019.03.049

Cellulosic materials-enhanced sandwich structure-like separator via electrospinning towards safer lithium-ion battery

Carbohydr Polym. 2019 Jun 15:214:328-336. doi: 10.1016/j.carbpol.2019.03.049. Epub 2019 Mar 15.

Authors

Shuo Wang¹, Dalun Zhang², Ziqiang Shao³, Siyuan Liu¹

Affiliations

¹ Engineering Research Center of Cellulose and Its Derivatives, Department of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China.
² Engineering Research Center of Cellulose and Its Derivatives, Department of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China. Electronic address: dalun_bit@163.com.
³ Engineering Research Center of Cellulose and Its Derivatives, Department of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China. Electronic address: shaoziqiang@263.net.

PMID: 30926004
DOI: 10.1016/j.carbpol.2019.03.049

Abstract

The latent security issue has become the foremost anxiety for lithium-ion batteries (LIBs) wide-ranging of commercialized applications. Hence, the performance of a separator such as chemical durability, electrical insulator, and thermal stability must be superior. Herein, we exhibit a sandwich-structured composite membrane with enhanced thermal resistance and electrolyte affinity, which was prepared by layer-by-layer electrospinning deposition. After 50 cycles, the battery with a 3 wt.% halloysite nanotube electrospinning separator retained 91.80% of its initial discharge capacity, that was a drastic improvement over the commercial polypropylene separator with the numeric of 79.98%. This predominant composite membrane was prepared via an eco-friendly technics and can be thought of an assuring, expectant separator towards high performance lithium-ion batteries.

Keywords: Cellulose acetate; Halloysite nanotube; Lithium-ion battery; Poly(vinylidence fluoride); Separator.