초록 ▼

The disclosure is concerned with a fuel cell battery of an acidic electrolyte type, which comprises means for controlling the flow rate of an oxygen-containing gas, such as air, to be fed to an oxidant electrode of the fuel cell battery in a quantity to completely remove water that is formed on the

The disclosure is concerned with a fuel cell battery of an acidic electrolyte type, which comprises means for controlling the flow rate of an oxygen-containing gas, such as air, to be fed to an oxidant electrode of the fuel cell battery in a quantity to completely remove water that is formed on the oxidant electrode by the reaction between fuel and the oxidant from the oxidant electrode. The fuel cell battery prevents lowering of the battery performance due to accumulated water on the oxidant electrode. Also disclosed is means for removing the gas formed at the fuel electrode of the fuel cell from the fuel chamber.

대표청구항 ▼

A fuel cell battery, using an acidic electrolyte in which the battery reaction is carried out at 100°C. or below, and adapted to utilize a liquid fuel and oxidant gas, comprising said acidic electrolyte, an oxidant electrode and fuel electrode on opposite sides of said acidic electrolyte, wherein up

A fuel cell battery, using an acidic electrolyte in which the battery reaction is carried out at 100°C. or below, and adapted to utilize a liquid fuel and oxidant gas, comprising said acidic electrolyte, an oxidant electrode and fuel electrode on opposite sides of said acidic electrolyte, wherein upon electro-chemical reaction water is generated at the oxidant electrode and carbon dioxide is generated at the fuel electrode, and means for feeding a fuel to said fuel electrode and means for feeding an oxidant gas to said oxidant electrode, wherein said means for feeding an oxidant gas to said oxidant electrode includes means for controlling the flow rate QN of said oxidant gas to be fed to said oxidant electrode in a quantity sufficient to remove the water that is formed on said oxidant electrode by the electro-chemical reaction between fuel and oxidant from said oxidant electrode, said flow rate being QN=(6-20)×10-0.3T0.5×I (1/minㆍcell), where T is a temperature of a gas at an outlet of the oxidant chamber and I is a battery current (A), and T is in the range of 20°C. to 80°C., whereby control of the flow rate of oxidant gas suplied to the oxidant electrode is used to remove said water that is formed on said oxidant electrode and provide optimal cell battery performance.