Liquid-injected air battery

Abstract

In the conventional air battery, since the electrolyte is recycled, there is a problem that the composition of the electrolyte gradually changes and the output power becomes unstable. By including an electrode structure (A) including an air electrode (1) and a metal negative electrode (2), a battery container (8) capable of holding the electrode structure (A) and the electrolyte solution (4), and a battery container (8) supplied to the battery container ( 8) The tank (5) for supplying the electrolyte (4), the tank (6) for discharging the electrolyte (4) discharged from the battery container (8), and the tank (6) for supplying the electrolyte (4) from the supply tank ( 5) The liquid-injected air battery (C1) of the pump (11A, 11B) of the electrolyte circulation mechanism that flows through the path from the battery container (8) to the discharge tank (6) can make the liquid supplied to the battery container (8) The composition of the electrolyte (4) is constant, and a stable output power is obtained.

Description

technical field [0001] The invention relates to an air battery using oxygen as a positive electrode active material, in particular to a liquid-injected air battery that allows electrolyte to flow during discharge. Background technique [0002] As a conventional air battery, there is an air battery described in Patent Document 1, for example. The air battery described in Patent Document 1 is equipped with a battery composed of a plurality of unit cells. During charging, the electrolyte solution in the liquid storage tank is circulated and supplied to the battery. The electrolyte solution in the drain receiving tank is circulated and supplied to the battery. In addition, the air battery includes a filter through which the electrolyte solution passes between the liquid storage tank and the pressure pump that supplies the electrolyte solution to the battery. [0003] Patent Document 1: (Japanese) Japanese Patent Publication No. 58-32750 [0004] However, in such an air batter...

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Problems solved by technology

[0004] However, in such an air battery, since metal salts are precipitated from the electrolytic solution during discharge, the conductivity decreases due to the precipitates, and the output power decreases.

In view of this, in the above-mentioned conventional air battery, although the precipitate can be removed by a filter, since the electrolyte solution is recycled, there are problems such as the composition of the electrolyte solution gradually changing and the output power becoming unstable. Problems become topics

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