Major Progress on Lithium-Sulfur Batteries

The lithium-sulfur battery holds a high theoretical energy density,four to five times as high as that of today’s lithium-ion batteries,yet its applications have been hindered by poor electronic conductivity of the sulfur cathode and,most importantly,the rapid fading of its capacity due to the formation of soluble polysulfide intermediates(Li2S n,n=4-8).Despite numerous efforts concerning this issue,combating sulfur loss remains one of the greatest