Polyisoprene Captured Sulfur Nanocomposite Materials for High-Areal-Capacity Lithium Sulfur Battery

Polyisoprene Captured Sulfur Nanocomposite Materials for High-Areal-Capacity Lithium Sulfur Battery

TitlePolyisoprene Captured Sulfur Nanocomposite Materials for High-Areal-Capacity Lithium Sulfur Battery
Publication TypeJournal Article
Year of Publication2019
AuthorsZeheng Li, Chen Fang, Chao Qian, Shudong Zhou, Xiangyun Song, Min Ling, Chengdu Liang, Gao Liu
JournalACS Applied Polymer Materials
Volume1
Issue8
Pagination1965 - 1970
Date Published05/2019
ISSN2637-6105
Abstract

A polyisoprene-sulfur (PIPS) copolymer and nano sulfur composite material (90 wt % sulfur) is synthesized through inverse vulcanization of PIP polymer with micrometer-sized sulfur particles for high-areal-capacity lithium sulfur batteries. The polycrystalline structure and nanodomain nature of the copolymer are revealed through high-resolution transmission electron microscopy (HRTEM). PIP polymer is also used as binders for the electrode to further capture the dissovlved polysulfides. A high areal capacity of ca. 7.0 mAh/cm2 and stable cycling are achieved based on the PIPS nanosulfur composite with a PIP binder, crucial to commercialization of lithium sulfur batteries. The chemical confinement both at material and electrode level alleviates the diffusion of polysulfides and the shuttle effect. The sulfur electrodes, both fresh and cycled, are analyzed through scanning electron microscopy (SEM). This approach enables scalable material production and high sulfur utilization at the cell level.

DOI10.1021/acsapm.9b0000610.1021/acsapm.9b00006.s001
Short TitleACS Appl. Polym. Mater.
Refereed DesignationRefereed