Direct electrochemical sulfide oxidation to trisulfide and tetrasulfide reagents by in situ selective capturing (opens in new tab)

Polysulfides are important reagents for sulfur-based polymers and lithium–sulfur batteries, yet their conventional syntheses yield varying chain-length mixtures. Electrochemical sulfide oxidation is an energy-efficient alternative route that suffers from electrode passivation, low selectivity and soluble products. Here we develop an in situ selective capturing strategy during sulfide electrooxidation to produce only trisulfide and tetrasulfide without disulfide in the precipitate form. By tun...