FUEL CELL, ELECTRONIC DEVICE, AND FUEL SUPPLY METHOD

PROBLEM TO BE SOLVED: To provide a fuel cell having a simple structure and capable of downsizing the cell itself. SOLUTION: A fuel diffusion layer 3 having a surface on a cell body 5 side made of a porous oxide film 32 is provided between the cell body 5 and a fuel tank 20. A liquid fuel 21 supplied to the fuel diffusion layer 3 from the fuel tank 20 is diffused in the porous oxide film 32. By a capillary phenomenon attributed to micro pores, the liquid fuel 21 is uniformly diffused to a wide extent and vaporized. The vaporized fuel is supplied to respective cells 5A to 5C in the cell body 5. Groove parts radially extending from the fuel supply position toward the peripheral part of the fuel diffusion part are formed on the surface of the fuel diffusion layer on the cell body 5 side. The liquid fuel is moved in the groove parts by using the capillary phenomenon irrespective of the direction of gravity and uniformly supplied to the respective power generating parts while suppressing the influence of the gravity due to the posture difference. COPYRIGHT: (C)2008,JPO&INPIT