Lithium–Sulfur Batteries: Molecular‐Level Design of Pyrrhotite Electrocatalyst Decorated Hierarchical Porous Carbon Spheres as Nanoreactors for Lithium–Sulfur Batteries (Adv. Energy Mater. 20/2020)

In article number 2000651, Zhong-Shuai Wu, Jian Liu and co-workers develop Fe1−xS-decorated mesoporous carbon spheres as a nanoreactor, which can be applied as a lithium–sulfur battery cathode. The nanoreactor shows excellent polysulfide catalytic activity and cyclic stability. This nanoreactor design strategy not only provides a new protocol for building high-capacity and long-cycle rechargeable batteries, but also opens an avenue for design of safer and high-energy-density lithium-metal batteries.