Fuel cell and cell stack device
AssigneeNGK Insulators, Ltd.
InventorsRyuhei Ohara, Hirofumi Kan, Makoto Ohmori
Life of this patent
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Abstract
A fuel cell includes a support substrate, at least one power generation element portion, at least one first gas channel, and at least one second gas channel. The power generation element portion is disposed on the support substrate. The first and second gas channels extend from a proximal end portion toward a distal end portion in the support substrate and are connected to each other at the distal end portion. The sum of a cross-sectional area of the at least one first gas channel is smaller than the sum of a cross-sectional area of the at least one second gas channel.
Claims7
A fuel cell including a distal end portion and a proximal end portion, the fuel cell comprising:
- a support substrate constituted of a porous material having no electron conductivity;
- at least one power generation element portion disposed on the support substrate;
- at least one first gas channel extending from the proximal end portion toward the distal end portion in the support substrate;
- and
- at least one second gas channel extending from the proximal end portion toward the distal end portion in the support substrate, the second gas channel being connected to the first gas channel in the distal end portion,
- wherein only the support substrate is provided between the at least one first gas channel and the at least one second gas channel, the sum of a cross-sectional area of the at least one first gas channel is smaller than the sum of a cross-sectional area of the at least one second gas channel and a ratio of the sum of the cross-sectional area of the at least one first gas channel to the sum of the cross-sectional area of the at least one second gas channel is 0.92 or less.
Dependencies are inferred from the claim text.