Power storage device electrode, method for manufacturing the same, power storage device, and electronic device

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.