Elastomer composites as functional binders for lithium sulfur batteries

Lithium-sulfur batteries (LSBs) have ultra-high energy density (~2600 Wh kg-1) and have great potential as power sources for electric vehicles and portable electronics. However, they suffer from the problems of low practical ability and poor life span, which limit their wide application. This proposed research is to develop elastomer composites as functional binders for LSBs to solve the problems of low conductivity of sulfur species, dramatic changes in the volume of sulfur electrodes, and the polysulfide shuttle effect, with the aim of increasing their capacity and extending their life time. In this project, elastomers, conductive additives and sulfur are mixed and vulcanized to be used as sulfur cathodes, and their battery performance is evaluated. The success of this project will expand the product range and extend the company’s products to battery applications.

Faculty Supervisor:

Yuning Li

Student:

Zhong Ma

Partner:

AirBoss of America

Discipline:

Engineering - chemical / biological

Sector:

Manufacturing

University:

University of Waterloo