| 摘要 |
PURPOSE: To enhance resistance of a fuel electrode against carbon monoxide so as to decide the optimum operation method of a battery by using this electrode. CONSTITUTION: A catalyst formed by mixing catalyst for supporting platinum on a carbon holder, with a catalyst for supporting nickle l on a carbon holder or catalyst for holding platinum and nickel fine particles on one carbon holder is proposed as a catalyst formed in a fuel electrode. Thereby, when a battery is operated at a comparatively low temperature at its start and stop, bad effect caused by suction of carbon monoxide included in fuel gas is eliminated so that the service life characteristic of the battery can be improved. Furthermore, any drop of resistant property of a fuel electrode against carbon monoxide owing to decreased nickel is prevented as the best operation method of the battery by using this fuel electrode by measuring a nickel quantity included in the exhaust gas on fuel electrode side and supplying optionally nickel carbonyl in response to a decreased quantity of nickel so as to raise the temperature of the battery up to 190 deg.C, thus precipitating nickel and supplying it. |
