▎ 摘　　要

NOVELTY - A graphene solution additive comprises mixed solution, where the mixed solution comprises solvent system, lithium hexafluorophosphate and graphene, the lithium concentration in the mixed solution is 1 mol/L, and the graphene quality percentage in the mixed solution is 2-3%. USE - Graphene solution additive for lithium ion battery (claimed). ADVANTAGE - The graphene solution additive reduces the energy density and improves the power density of the lithium ion battery. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for the following: (1) a method for preparing graphene solution additive (2) a lithium ion battery.