US 12,218,337 B2
Power storage device electrode, method for manufacturing the same, power storage device, and electronic device
Tatsuya Ikenuma, Kanagawa (JP); and Kazutaka Kuriki, Kanagawa (JP)
Assigned to Semiconductor Energy Laboratory Co., Ltd., Kanagawa-ken (JP)
Filed by SEMICONDUCTOR ENERGY LABORATORY CO., LTD., Atsugi (JP)
Filed on Jun. 17, 2021, as Appl. No. 17/350,248.
Application 17/350,248 is a division of application No. 14/517,994, filed on Oct. 20, 2014, abandoned.
Claims priority of application No. 2013-219537 (JP), filed on Oct. 22, 2013.
Prior Publication US 2021/0313555 A1, Oct. 7, 2021
Int. Cl. H01M 4/13 (2010.01); H01M 4/04 (2006.01); H01M 4/139 (2010.01); H01M 4/36 (2006.01); H01M 4/62 (2006.01); H01M 10/42 (2006.01); H01M 10/052 (2010.01)
CPC H01M 4/13 (2013.01) [H01M 4/0404 (2013.01); H01M 4/139 (2013.01); H01M 4/366 (2013.01); H01M 4/622 (2013.01); H01M 4/625 (2013.01); H01M 10/4235 (2013.01); H01M 10/052 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A method for manufacturing an electrode, comprising the steps of:
providing a first mixture comprising a first solvent, a first binder and a conductive particle over a current collector to form a first layer comprising the first binder and the conductive particle;
forming a second mixture comprising a second solvent, a second binder and an active material particle;
adding perhydropolysilazane to the second mixture in order to form a third mixture;
providing the third mixture over the first layer;
volatilizing the second solvent in the third mixture under an atmosphere with lower humidity than air to form an active material layer;
exposing the active material layer to moisture; and
baking the active material layer to form a coating film covering at least part of a surface of the active material particle in the active material layer after exposing the active material layer to moisture,
wherein each of the first binder and the second binder comprises a functional group that is a least one of a carboxyl group, a carbonyl group and a hydroxy group, and
wherein any one of the steps of forming the third mixture and baking the third mixture includes gas generation by a reaction between the functional group in the second binder and the perhydropolysilazane.