Lowering the charge overpotential of Li2S via the inductive effect of phenyl diselenide in Li–S batteries

We find that phenyl diselenide (PDSe) can lower the charge overpotential of Li₂S via an inductive effect. The Se-Se bond of PDSe can break when it is in contact with Li₂S. The attraction between Se and Li weakens the Li-S bonds and facilitates the oxidation of Li₂S in lithium batteries.