PPK invests in lithium sulphur battery technology
PPK Group has invested in novel lithium sulphur battery technologies through its Li-S Energy subsidiary. PPK announced that Li-S had invested US$1.7 million into Texas-based Zeta Energy which is commercialising energy packs using graphene carbon nanotubes and lithium sulphur. At the same time Zeta Energy is investing US$1.4 million into Li-S, meaning the companies will…