▎ 摘　　要

NOVELTY - The device has a second coating includes a first active material, wherein a first coating (102) is arranged between a current collector (101) and a second coating (103). The first current charged with constant current to a first voltage during the charging process, then charge with a constant current of a second current smaller than the first current to a second voltage higher than the first voltage, and then charge with a constant voltage until the cut-off current. The first binder includes polyvinylidene fluoride, vinylidene fluoride-fluorinated olefin copolymer, polyvinylpyrrolidone, polyacrylonitrile, polymethyl acrylate, polytetrafluoroethylene, carboxymethyl cellulose, sodium, styrene butadiene rubber, polyurethane, fluorinated rubber or polyvinyl alcohol. The conductive carbon includes conductive carbon black, carbon nanotubes, conductive graphite, graphene, acetylene black, or carbon nanofibers. USE - Electrochemical device for electronic device (claimed). ADVANTAGE - The device realizes faster charging and improve fast charging performance while this application ensures the safety performance of electrochemical devices. DESCRIPTION OF DRAWING(S) - The drawing shows a cross-sectional view of a pole portion of an electrochemical device. (Drawing includes non-English language text) Pole portion (10) Current collector (101) First coating (102) Second coating (103)