MoS2/graphene cathodes for reversibly storing Mg2+ and Mg2+/Li+ in rechargeable magnesium-anode batteries

Abstract

Commercial micron-scale low-cost MoS₂ is subjected to an electrochemically derived 2H-to-1T phase transformation, which makes it capable of reversibly storing Mg²⁺/Li⁺ and Mg²⁺ in all-phenyl-complex (APC) electrolytes with and without Li⁺, respectively. The MoS₂/graphene composite shows a high capacity (225 mA h g⁻¹) and great cyclic stability in the Li⁺-containing APC electrolyte.