Fuel cell

Abstract

Abstract PURPOSE:To make current density distribution and temperature distribution in a fuel cell uniform by forming an electrolyte plate, a fuel electrode, an oxidizing electrode, and a current collecting plate in a doughnut shape. CONSTITUTION:A doughnut-shaped fuel electrode 2 and a doughnut-shaped oxidizing electrode 3 are sticked on the both sides of a doughnut-shaped electrolyte plate 1. Doughnut-shaped current collecting plates 5 are sticked on the surfaces, which are not in contact with the electrode plate, of the fuel electrode 2 and oxidizing electrode 3 to form a cell. The cell is stacked to a separator 4 having supply and exhaust holes of fuel and oxidizing agent in its center and periphery. A catalyst 6 for internal reforming is sticked to a separator on the fuel electrode side. CH4 serving as fuel is supplied through a fuel supply hole 8, and passes through a gas passage as shown in an arrow 9, then is exhausted from a fuel gas exhaust hole 10. The fuel gas keeps a reducing atmosphere in the outer frame 11 of the separator. On the other hand, an oxidizing agent is supplied through an oxidizing agent supply hole 12, and passes through a cathode as shown in an arrow 13, and is exhaust from an exhaust hole 14. The fuel exhaust hole 10 and the oxidizing agent exhaust hole 13 are separated each other.

Inventors

• 👤 Makoto Shimoda
• 👤 誠 下田
• 👤 Susumu Yoshioka
• 👤 進 吉岡
• 👤 Tadataka Murakami
• 👤 村上　忠孝
• 👤 Kazuhisa Higashiyama
• 👤 和寿 東山

Bibliographic Details