▎ 摘　　要

NOVELTY - The pole piece comprises a pole piece current collector (1) and an active material arranged on the surface of the current collector of the pole piece. The current collector is provided with at least one storage hole (1a). The storage hole is filled with conductive porous material (2). The conductive porous material is stored with electrolyte. The active material is a conductive polyurethane material. USE - The pole piece is useful in a lithium battery (claimed). Can also be used in consumer electronics, electric automobile, aerospace and equipment industry application and development. ADVANTAGE - The conductive porous material can absorb and store part of the electrolyte, which improves the liquid retention capacity of the battery. The electrolyte stored by conductive porous material supplements the consumption of the electrolyte during the cycle, and improves battery cycle life, reduces the replacement frequency of battery, and reduces the use cost of battery and improves the market competitiveness of the product. The pole piece does not affect the load quantity of the current collector active substance, and realizes the lifting of long cycle life performance. The battery is capable of improving battery long cycle performance and lithium battery using pole piece. DESCRIPTION OF DRAWING(S) - Pole piece current collector (1) Storage hole (1a) Conductive porous substance (2) Conductive porous material (3)