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