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Patent Searching and Data


Title:
SOLID ELECTROLYTE TYPE FUEL CELL
Document Type and Number:
Japanese Patent JPH0773886
Kind Code:
A
Abstract:

PURPOSE: To provide a practicable low temperature operation type solid fuel cell by using a solid electrolyte of a high ion conductivity and an air electrode composed of lanthanum cobalt oxide having excellent conductivity and catalytic activity.

CONSTITUTION: In a solid electrolyte type fuel cell comprising a fuel electrode 1, a solid electrolyte 2 and an air electrode 3, a ZrO2-Sc2O3-Al2O3 material having an ion conductivity higher than that of stabilizing zirconia (YSZ) is used as the solid electrolyte 2. Consequently, the operation of a fuel cell can be performed at as low as about 800°C. Lanthanum cobalt oxide having conductivity and catalytic activity more excellent than those of conventional La1-zSrzMnO3 or lanthanum cobalt oxide where a part of lanthanum is substituted with strontium is used as the air electrode 3. As a result, it is possible to use the fuel cell at low temperatures and improve mechanical properties at high temperatures.


Inventors:
ISHII TAKAO
CHIBA REIICHI
TAJIMA YUKIMICHI
Application Number:
JP21945293A
Publication Date:
March 17, 1995
Filing Date:
September 03, 1993
Export Citation:
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Assignee:
NIPPON TELEGRAPH & TELEPHONE
International Classes:
C01G51/00; H01M4/86; H01M8/02; H01M8/12; (IPC1-7): H01M4/86; C01G51/00; H01M8/02; H01M8/12
Attorney, Agent or Firm:
Fukumori Hisao