Graphene-magnesium seawater battery device

Abstract

The invention belongs to the technical field of seawater battery equipment, and in particular relates to a graphene-magnesium seawater battery device. The graphene-magnesium seawater battery device consist of 1 to n groups of graphene-magnesium seawater battery units; the main body structure of each graphene-magnesium seawater battery unit comprises a shell, an upper part water-permeable hole, a bottom water-permeable hole, a convex cone, a magnesium alloy anode polar plate, a negative pole binding post, a graphene composite cathode polar plate, a positive pole binding post, an ion conducting plate grid, an inner seal cover, a binding post through hole, an outer seal cover, a lead hole, a voltage-resistant area, a negative pole output lead and a positive pole output lead; based on the technical principle of a fuel battery, the anode material adopts high-potential and inert AZ31 magnesium alloy, the cathode adopts a graphene composite material with high electrical conductivity and prominent catalytic reduction efficiency on seawater dissolved oxygen, and a seawater solution with dissolved oxygen more than or equal to 5 ppm and sodium chloride more than or equal to 3.5 percent serves as electrolyte; the graphene-magnesium seawater battery device is simple in structure, scientific and reasonable in principle, high in operability, low in cost, friendly in using environment, safe, environmentally friendly, high in popularization value, and easy to popularize and use.

Description

[0001] Technical field: [0002] The invention belongs to the technical field of seawater battery equipment, and relates to a graphene-magnesium seawater battery device, in particular to a unit combined seawater battery with a graphene composite material as a cathode, a magnesium alloy material as an anode, and seawater as an electrolyte. [0003] Background technique: [0004] With the in-depth development of people's marine scientific research and marine resource development activities, marine equipment such as marine monitoring, marine engineering, marine military activities, marine lifesaving and submersibles, especially marine deep-water exploration and resource development and production activities, have put forward urgent demands on power supplies. Relying on shore power transmission, ship power supply or rechargeable battery power supply with great limitations is far from meeting the increasingly prominent requirements of marine activities, which greatly limits people's ...

AI Technical Summary

Problems solved by technology

[0004] With the in-depth development of people's marine scientific research and marine resource development activities, marine equipment such as marine monitoring, marine engineering, marine military activities, marine lifesaving and submersibles, especially marine deep-water exploration and resource development and production activities, have put forward urgent demands on power supplies. Relying on shore power transmission, ship power supply or rechargeable battery power supply with great limitations is far from meeting the increasingly prominent requirements of marine activities, which greatly limits people's in-depth development and marine scientific research and production activities. For many years, people have been seeking to manufacture a relatively long-lasting independent power source that is suitable for marine activities, and seawater batteries with broad prospects for use have emerged as the times require.

Scientists have successively invented silver chloride seawater batteries, aluminum seawater batteries and zinc seawater batteries, etc., all of which are difficult to popularize because of expensive materials or irreversible technical defects

Magnesium has the characteristics of high potential, light weight, good physical and chemical properties, and low processing cost. In particular, magnesium alloy materials are recognized as the best anode material for seawater batteries. Therefore, using magnesium alloy materials as anodes for seawater batteries has low cost. , technologically accessible and environmentally friendly; however, magnesium alloys corrode too quickly in seawater, causing the plate to loosen and fall off, short service life, and the accumulation of corrosion products will cause self-discharge or short-circuit of the battery. These objective defects belong to the reachable range that subjective technology can easily overcome

The cathode of the magnesium seawater battery in the prior art generally uses inert conductive materials such as graphite, carbon steel or copper alloy, and its current density is generally 2 , low catalytic efficiency, slow reaction speed, and poor stability for seawater dissolved oxygen reduction, seriously inhibiting the generation of electric energy, and greatly restricting the development and application of seawater batteries

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