Porous Hollow Carbon@Sulfur Composites for High-Power Lithium–Sulfur Batteries


  • This material is based on work supported as part of the Energy Materials Center at Cornell, an Energy Frontier Research Center funded by the U.S. Department of Energy, Office of Basic Energy Sciences under Award Number DE-SC0001086.


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Slowing down the shuttle: C@S nanocomposites (see TEM images) based on mesoporous, hollow carbon capsules were generated by a template-based approach. As the cathode material in a Li–S secondary battery, they display outstanding electrochemical features attributed to sequestration of elemental sulfur in the carbon capsules and to its favorable effect in limiting polysulfide shuttling as well as to enhanced electron transport from the sulfur.