Inverse Vulcanization of Elemental Sulfur to Prepare
Polymeric Electrode Materials for Li–S Batteries
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Abstract
Sulfur-rich copolymers based on poly(sulfur-<i>random-</i>1,3-diisopropenylbenzene) (poly(S-<i>r</i>-DIB)) were synthesized via inverse vulcanization to create cathode
materials for lithium–sulfur battery applications. These materials
exhibit enhanced capacity retention (1005 mAh/g at 100 cycles) and
battery lifetimes over 500 cycles at a C/10 rate. These poly(S-<i>r</i>-DIB) copolymers represent a new class of polymeric electrode
materials that exhibit one of the highest charge capacities reported,
particularly after extended charge–discharge cycling in Li–S
batteries