Poly(3,4-ethylene-dioxythiophene)-poly(styrenesulfonate) glued and graphene encapsulated sulfur-carbon film for high-performance free-standing lithium-sulfur batteries
Hollow sulfur particles are confined in polymer shell and graphene layers. Free-standing sulfur-based cathodes are fabricated by a scalable approach. The free-standing sulfur cathodes with high loading show excellent performances.