Aluminum-water electrochemical battery system

Abstract

The invention discloses an aluminum-water electrochemical battery system which comprises an aluminum-water battery and a maintaining system. The aluminum-water battery comprises a battery unit, the battery unit comprises a shell, a positive electrode, a negative electrode, a water body interaction system and a reaction system. The reaction system is arranged in the shell, and the water body interaction system and the positive and negative electrodes are distributed on the shell. The water body interaction system is connected with the reaction system and the maintaining system, the shell comprises cathode shells and an anode shell, the cathode shells are symmetrically arranged on the two sides of the anode shell, sealing rings are arranged between the two sides of the anode shell and the cathode shells, and the anode shell is detachably connected with the cathode shells on the two sides; the reaction system comprises an anode, an anode support and a cathode, the anode is nested in the anode support, an aluminum hydroxide floccule is arranged on the surface of the anode, the cathode is arranged in the cavity, hydrogen bubbles are attached to the surface of the cathode, and electrolyte is arranged in a cathode shell and an anode shell; the positive electrode and the negative electrode comprise two electrode bars distributed up and down and a connector. Stable power supply can be realized.

Description

technical field [0001] The invention belongs to the technical field of marine chemistry and energy application, and specifically relates to a kind of electric energy generated by chemical reaction of aluminum metal or aluminum alloy and water, which can continuously provide long-term power supply for equipment in the marine environment. Aluminum-water electrochemical cell system. Background technique [0002] The aluminum-water electrochemical cell is a kind of fuel cell with aluminum metal or aluminum alloy as the anode and water as the cathode. It is different from the traditional aluminum-air (oxygen) fuel cell. , can be used under anaerobic conditions, only consume aluminum alloy anode and water during use, can generate hydrogen while supplying power to the load, and realize the symbiosis of electric energy and hydrogen energy. [0003] The aluminum-water electrochemical battery uses aluminum alloy as the anode of the battery, which has the following advantages: (1) hig...

AI Technical Summary

Problems solved by technology

[0004] There are still many disadvantages in aluminum-water electrochemical cells using aluminum alloy as the anode of the battery: (1) the actual working potential of aluminum is much higher than the theoretical value; there is a strong affinity between aluminum alloy and oxygen, in air and aqueous solution, its A dense passivation oxide film will be formed on the surface, so that the electrode potential of aluminum in neutral solution cannot reach the theoretical electrode potential, and it will also cause voltage hysteresis during discharge.

(2) The aluminum anode is prone to serious hydrogen evolution self-corrosion during the reaction, which reduces the utilization rate of the aluminum alloy, reduces the specific energy and specific power of the battery, and affects the normal operation of the battery

[0007] 1. The performance of the aluminum alloy anode cannot reach the theoretical value due to passivation and self-corrosion;

[0008] 2. The battery is easy to generate AI(OH) due to chemical reaction during work 3 The flocs lead to battery blockage and capacity loss;

[0009] 3. When the battery moves with the device, its posture will change, and the exhaust effect of the fixed exhaust port is poor, so a new exhaust method is needed

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