Polyphenyl polysulfide: a new polymer cathode material for Li-S batteries.

We report a new class of polyphenyl polysulfides synthesized by condensation reactions between 4,4'-thiobisbenzenethiol (TBBT) and sulfur with four different molar ratios in a toluene/carbon disulfide mixture at room temperature. Through comprehensive material and electrochemical characterization, we found that they have great application potential for Li-S batteries.