▎ 摘　　要

NOVELTY - Flexible battery pole piece comprises carbon nano fiber and graphene, the carbon nano fiber is prepared by electrostatic spinning and carbonizing the polyacrylonitrile sequentially, where the diameter of the carbon nano fiber is 200-500 nm, the weight percentage of the graphite is 5-40% of the flexible battery pole piece, and the thickness of the flexible battery pole piece is 0.2-2 mm. USE - The battery pole piece is useful for lithium ion battery, sodium ion battery and sodium battery and power battery field. ADVANTAGE - The flexible battery pole piece has high specific capacity and flexibility, and satisfies high energy density requirement of the lithium/sodium ion battery, and ensures good flexibility. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: 1. preparation method of flexible battery pole piece; and 2. battery. DESCRIPTION OF DRAWING(S) - The drawing shows a digital photograph of the flexible battery pole piece.