▎ 摘　　要

NOVELTY - Pole piece comprises a current collector and an active material (1) layer set on the current collector surface the thickness of the active material layer is not less than 100 m, and the active material layer comprises solid particles, where the solid particles are formed with pores, and the solid particles comprise an active substance and a conductive agent (2). USE - Pole piece (claimed). ADVANTAGE - The pole piece has effectively improved the transmission dynamics of the lithium-ion electrode and has improved the porosity of the pole piece by more than 10 wt.%. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for: 1. a method for preparing pole piece, which involves : a. mixing the solid particle binder, water, and an organic solvent, the solid particles comprise an active substance and a conductive agent, stirring to obtain slurry in the slurry; and b. forming a liquid bridge between the solid organic solvent in the slurry, the three-phase contact angle of the liquid bridge and the solid particles is less than 90 degreesC, the three-phase angle contact the included angle of the interface extension organic solvent of the water and the solid particles at the tangential line of the solid organic solvent contact coating the slurry on the current collector surface the coating thickness of the slurry at least one side of the current collector is not less than 100 m, to dry the pole piece; and 2. a kind of battery, which comprises the pole piece. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of the pole piece. (Drawing includes non-English language text). Active material (1) Conductive agent (2) Capillary (4) Interface extension line (L1) Tangent line (L2)