The energy densities of lithium-sulfur batteries are at least twice as much as that of their rival Li-ion batteries of the same weight. Therefore, scientists are highly interested in developing rechargeable lithium-sulfur batteries. There is a common by-product of papermaking industry: lignosulfonate. Researchers from Rensselaer Polytechnic Institute (RPI) use lignosulfonate to make low-cost electrode materials […]
