Patent ID: 8318374
Filing Date: 2012-11-27
Classification: H01M,Y02E

Abstract:
1. A fuel cell comprising an oxygen electrode, a hydrogen electrode, and solid polyelectrolyte, wherein: the solid polyelectrolyte is sandwiched between the oxygen electrode and the hydrogen electrode, the oxygen electrode comprises carbon particles, a carbon thin-film, and surface nanostructure, the carbon particles are bonded to one another with the carbon thin-film, the surface nanostructure is formed on the surface of the carbon thin-film, the surface nanostructure comprises catalyst nanoparticles and carbon nanoparticles, each of the carbon nanoparticles has a shape of a sphere, each of the carbon particles has a diameter of not less than 30 nm and not more than 100 nm, each of the catalyst nanoparticles has a diameter of a nanometers, which falls within a range of not less than 1.7 nm and not more than 3.1 nm, each of the carbon nanoparticles has a diameter of b nanometers, which falls within a range of not less than 1.0 nm and not more than 11.2 nm, an equation is satisfied such that the carbon nanoparticles form a three-dimensional structure where the catalyst nanoparticles are confined at vacancies and recess of the three-dimensional structure.