▎ 摘　　要

NOVELTY - The material comprises a lead selenide cubic particles, graphene and graphene oxide composite material. Percentage of the graphene oxide composite material is 0.4-20. Side length of lead selenide cubic particles is 100-200 nm. The lead selenide cubic particles are uniformly dispersed with each other. USE - Lead selenide cubic particles/graphene composite material for use as a lithium-ion battery cathode material. ADVANTAGE - The material realizes charging and discharging process in a stable manner. The material is inexpensive, and reduces energy consumption. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a lead selenide cubic particles/graphene oxide composite material preparation method. DESCRIPTION OF DRAWING(S) - The drawing shows a graphical view illustration operation of a lead selenide cubic particles/graphene composite material.'(Drawing includes non-English language text)'