▎ 摘　　要

NOVELTY - The negative pole electrode comprises negative electrode active substance layer including negative electrode active substance, where particle size (D90), film layer density (PD) and surface density (CW) of negative electrode active substance satisfy the relational formula 5 less than or equal to D90asteriskPDasteriskCW less than or equal to 450. USE - The negative pole electrode is used for battery of electronic device (all claimed). ADVANTAGE - By making the particle diameter of the negative electrode active substance greater than or equal to 3 microm, the transmission distance of the active ion in the active substance can be effectively reduced, so as to facilitate the diffusion of active ion. The negative electrode can be applied with the pole piece to obtain excellent quick charging performance, to satisfy the endurance requirement of the electronic device. Thus, the fast charging performance of the battery can be improved effectively, and the cost of the batteries can be reduced effectively.