Patent ID: 7829235
Filing Date: 2010-11-09
Classification: H01M,Y02E,Y02P,Y10T

Abstract:
1. A production method for a fuel cell that obtains an electromotive force through an electrochemical reaction, comprising the steps of: (a) forming a solid-state electrolyte layer that has a conductivity for an ion of one of hydrogen and oxygen; (b) forming, on a surface of the electrolyte layer, a dense layer made of an electrode material that has an electron conductivity, a catalyst activity to accelerate the electrochemical reaction, and a characteristic of allowing permeation of an ion and/or an atom of another one of hydrogen and oxygen; (c) building a fuel cell structure that includes the electrolyte layer and the dense layer; and (d) causing the electrochemical reaction to progress by supplying a fuel and oxygen to the fuel cell structure, so that in the dense layer, many micropores extending through the dense layer in a film thickness direction are created due to a generated water that is created between the electrolyte layer and the dense layer, wherein the dense layer has a film thickness of 10 nm to 200 nm, and the dense layer is formed by Physical Vapor Deposition.