Solid electrolyte type fuel cells

Abstract

Abstract A plate (11) 0.05 - 0.3 mm thick is made of a solid electrolyte, e.g. zirconia containing 2-5 wt % of yttria, and is coated on one side with a cathode layer (12) of material resistant to 0₂, e.g. made from powdered LaSr .MnO₃ and on the other side with an anode layer (13) of material resistant to H₂, each layer being porous to gases and electrically conductive; an assembly of plates (11) is made up with alternating interconnectors (14) having grooves (14a, 14b) on each side to define gas passages; the interconnectors and plates are made of conductive heat-­resistant material, preferably of an alloy containing Co, Cr, Ni, Fe or Mn coated with a composite oxide of La and an alkaline earth metal, or of a noble metal. The ends of the assembly are formed by terminals (15, 16) groov­ed only on their inner faces. The parts can be sealed together with glass paste, and gas supply lines (23-26, Fig 5) are provided externally. When the cell is heated at 1000 o C and H₂ and O₂ are supplied to the anodes and cathodes, a current is generated between the terminals (15, 16). The cells are simple of low internal resistance and efficient in operation.

Inventors

• 👤 Toshihiko C/O Toa Nenryo Kogyo K.K. Yoshida
• 👤 Tsukasa C/O Toa Nenryo Kogyo K.K. Shima
• 👤 Fumiya C/O Toa Nenryo Kogyo K.K. Ishizaki
• 👤 Hiroyuki C/O Toa Nenryo Kogyo K.K. Iwasaki
• 👤 Isao C/O Toa Nenryo Kogyo K.K. Mukaizawa
• 👤 Yoshiyuki C/O Toa Nenryo Kogyo K.K. Someya
• 👤 Satoshi C/O Toa Nenryo Kogyo K.K. Sakurada
• 👤 Osamu C/O Toa Nenryo Kogyo K.K. Yamamoto

Bibliographic Details