Brimstone batteries

An all-solid lithium-sulfur battery that has about four times the energy density of conventional lithium-ion batteries has been developed by scientists at Oak Ridge National Laboratory. The work undertaken by Chengdu Liang and colleagues also precludes flammability issues seen with more conventional systems. Lithium-sulfur systems have been investigated before but still require a liquid electrolyte. Liang and his team have now synthesized sulfur-rich materials that work as the cathode in conjunction with a lithium anode and a solid electrolyte.