Title:
【発明の名称】バリウムセリウム型固体電解質燃料電池の運転方法
Document Type and Number:
Japanese Patent JP3055350
Kind Code:
B2
Abstract:
PURPOSE:To stably start a cell and to carry out stable operation for a long time by setting carbon dioxide concentration in a gas composition, which is supplied to a fuel electrode and an air electrode during operation, to be 10% or less. CONSTITUTION:A carbon dioxide concentration in a gas composition to be supplied to both of a fuel electrode and an air electrode during operation is set to be 10% or less. Desirably, no water vapor is included in the gas composition to be supplied. When a fuel gas including a carbon dioxide of 10% or more or an oxidative gas is supplied to a cell, a cell actuating temperature is kept 800 deg.C or more. When the carbon dioxide concentration is set to be the predetermined value or less in this way during a temperature rise in such operation conditions as starting, actuating, and restarting, a barium-cerium group oxide takes a cubic system. Once a cubic system is formed, its structure becomes extremely stable, and it is not affected by an environment, so that a stable cell discharge can be carried out. A characteristic chart of a change with the lapse of time during a continuos discharge in this way at a current density of 100mA/cm<2> is given.
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Inventors:
Noboru Taniguchi
Koji Gamo
Koji Gamo
Application Number:
JP7552693A
Publication Date:
June 26, 2000
Filing Date:
April 01, 1993
Export Citation:
Assignee:
Matsushita Electric Industrial Co., Ltd
International Classes:
H01M8/12; H01M6/18; H01M8/04; (IPC1-7): H01M8/12; H01M8/04
Domestic Patent References:
| JP5234606A |
Attorney, Agent or Firm:
Fumio Iwahashi (2 others)