Patent ID: 9620780
Date: 2017-04-11
CPC Classifications: H01M,Y02E

Claim:
1. An anode for a secondary battery, comprising: an electrode current collector; a first coating layer formed on the electrode current collector and comprising an anode active material, a first nonaqueous binder and a conducting material; and a second coating layer formed on the first coating layer and comprising a second nonaqueous binder, wherein the first nonaqueous binder is one or more nonaqueous binder selected from a group consisting of polyvinylidene fluoride (PVDF), polyacrylonitrile (PAN), an acrylonitrile-containing binder (X-linking agent), polyvinyl chloride, polyvinylpyrrolidone, polytetrafluoroethylene, polyethylene and polypropylene, wherein the second nonaqueous binder is one or more nonaqueous binder selected from a group consisting of polyvinylidene fluoride (PVDF), polyacrylonitrile (PAN), an acrylonitrile-containing binder (X-linking agent), polyvinyl chloride, polyvinylpyrrolidone, polytetrafluoroethylene, polyethylene and polypropylene, wherein the second coating layer is coated on the first nonaqueous binder which is coated only at a point of contact areas of neighboring anode active material particles, wherein the second coating layer is coated in an amount of 1-5 wt % based on the total weight of the electrode on which the first coating layer has been formed, and wherein the second nonaqueous binder is different from the first nonaqueous binder.