A COF-graphene hybrid opens new horizons for lithium-sulfur batteries

Lithium-sulfur (Li-S) batteries combine the abundance and affordability of sulfur with an energy storage capability far beyond that of current lithium-ion technologies. Practical deployment, however, has been slowed by a longstanding challenge known as polysulfide shuttling, whereby dissolved sulfur intermediates migrate within the battery, leading to active-material loss and premature performance decay.