Patent ID: 7855032
Filing Date: 2010-12-21
Classification: H01M,Y02E

Abstract:
1. A fuel cell comprising: a porous anode to oxidize liquid fuel; a cathode to reduce oxygen; a solid polymer electrolyte membrane formed between the anode and the cathode; and a porous body facing the porous anode, which has a first group of continuous micro pores having liquid retentivity for forming a liquid fuel supply channel and a second group of continuous micro pores having no liquid retentivity for forming a gas release channel from the anode; wherein the liquid fuel is supplied to the anode by capillary force generated at the anode, and wherein an average radius of the second group of the micro pores is larger than that of the first group of the micro pores, and the average radius of the second group of the micro pores is at least 500 μm.