▎ 摘　　要

NOVELTY - Anode pole piece comprises an anode current collector and anode active material layer on two surfaces of the anode current collector, where the anode active material layer comprises anode active material and graphene, the relationship between the grain diameter Dv50 of the anode active material and the thickness THK of the anode pole piece satisfies the following conditions : 7.74 less than or equal to Dv501/2 + 0.05THK less than or equal to 10.2; the unit of Dv50 mu m, the unit of THK mu m, the layer number n of the graphene mass percentage w in the anode active layer and the single-side coating amount CW of the anode active material layer satisfies the following relationship : 0.078 less than or equal to wasteriskCW+0.01n less than or equal to 1.9; the unit of CW is mg/1540.25mm 2. USE - Anode pole piece used in an electrochemical device and an electronic device. ADVANTAGE - The positive pole piece can be prepared with better effect of satisfying the relational expression.