Patent ID: 8445160
Filing Date: 2013-05-21
Classification: H01M,Y02E

Abstract:
1. A power generating cell for a fuel battery, comprising: a looped frame; an electrolyte membrane attached inside the frame; an anode-side electrode catalyst layer laid on a first surface of the electrolyte membrane; a cathode-side electrode catalyst layer laid on a second surface of the electrolyte membrane; a first gas passage forming member made of a metal lath, wherein the first gas passage forming member is laid on the surface of the anode-side electrode catalyst layer and has a first gas passage for supplying fuel gas; and a second gas passage forming member made of a metal lath, wherein the second gas passage forming member is laid on the surface of the cathode-side electrode catalyst layer and has a second gas passage for supplying oxidation gas, wherein a supply passage for supplying fuel gas to the first gas passage and a discharge passage for discharging fuel off-gas from the first gas passage are formed in the frame, wherein water ingression preventing means prevents water remaining in a part of the first gas passage at an outer peripheral portion of the first gas passage forming member from entering the anode-side electrode catalyst layer, wherein the outer peripheral portion of the first gas passage forming member extends outward beyond the outer periphery of the anode-side electrode catalyst layer and is directly exposed to a discharge passage for discharging fuel gas, and the outer peripheral portion of the second gas passage forming member does not extend outward beyond the outer periphery of the cathode-side electrode catalyst layer, wherein the water ingression preventing means includes a band-like shield plate that is located at an inner periphery of the frame, between the electrolyte membrane and the outer peripheral portion of the first gas passage forming member, and outside of the anode-side electrode catalyst layer, and wherein it is possible to discharge, to the discharge passage for fuel gas, the water remaining in the part of the first gas passage at the outer peripheral portion of the first gas passage forming member.