Guar gum as a novel binder for sulfur composite cathodes in rechargeable lithium batteries

Abstract

Due to their high theoretical energy densities, lithium sulfur (Li–S) batteries are currently some of the most extensively investigated electrochemical power sources. As a sustainable and environmentally friendly biopolymer, guar gum (GG) is chosen as a binder for use in Li–S batteries for the first time. The results show that GG is a promising binder for sulfur composite cathode materials, and exhibits excellent cycling performance and a favorable high rate capability.