Sulfur has a specific capacity of 1675 mAh·g–1 as a lithium battery cathode, but its rapid capacity decay due to the migration of dissolved polysulfides presents a major challenge for commercialization. Most approaches in the past few decades have focused on impregnating sulfur into a carbon host via various harsh, time-consuming, and costly carbonization techniques. In this context, sublimed sulfur is introduced into a commercial carbon via microwave treatment in minutes for the first time.
