Unveiling light effect on formation of trisulfur radicals in lithium–sulfur batteries†
Abstract
is the important electrochemical intermediate in Li–S batteries of highly solvating solvents. Herein, the dissociation of
into
is deeply studied. light is proven to promote the formation of
from the dissociation of
. Accordingly, a strategy of pre-introducing highly active
into DMSO-based electrolyte is proposed to activate sulfur cathodes of Li–S batteries.