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Aluminum air battery

An aluminum-air battery and air electrode technology, which is applied in the direction of fuel cell control, fuel cell additives, fuel cell-type half-cells and primary battery-type half-cells, can solve problems such as low power generation efficiency and hydrogen evolution corrosion, and achieve The effect of improving power generation efficiency, saving energy, and improving material utilization

Active Publication Date: 2019-09-24
YUNAN JINGCHUANG LIQUID METAL THERMAL CONTROL TECH RES & DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide an aluminum-air battery to solve the problems of hydrogen evolution corrosion and low power generation efficiency in aluminum-air batteries in the prior art

Method used

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  • Aluminum air battery
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Examples

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Effect test

Embodiment 1

[0030] Such as figure 1 As shown in , the aluminum-air battery provided by the embodiment of the present invention includes a power generation area surrounded by a hollow reaction cell 5. The power generation area is a closed structure, and the interior is provided with: aluminum objects, liquid metal or liquid metal alloy, electrolyte 3, Air electrode 2, 2 electrode pieces.

[0031] The liquid metal can be gallium. If it is a liquid metal alloy, it is a gallium-based liquid metal alloy added with one or more of indium, tin, zinc, and bismuth, such as gallium-indium alloy, gallium-tin alloy, etc., according to specific needs choose.

[0032] The aluminum object means that during the power generation process of the battery, metal aluminum will lose electrons and transform into aluminum ions, so it exists as a negative electrode inside the battery. Metal aluminum as the negative electrode can be in various forms such as aluminum powder, aluminum block, aluminum foil, etc.

[...

Embodiment 2

[0044] This embodiment is basically the same as Embodiment 1. For the sake of brevity, in the description process of this embodiment, the same technical features as Embodiment 1 will not be described, and only the differences between this embodiment and Embodiment 1 will be described:

[0045] The structure and reaction principle of the aluminum-air battery provided in this example are the same as those in Example 1, except that the hollow cavity in this example adopts a square structure, and the air electrode 2 adopts a plate-like structure. There are multiple air electrodes 2 in this embodiment, such as image 3 As shown in , a plurality of air electrodes 2 are arranged in an array, and the plurality of air electrodes 2 are connected by wires, so that the generated current can be converged into a single current output through the wires, and this arrangement can increase the distance between the air electrodes 2 and the electrolyte 3 The contact area is conducive to the diffu...

Embodiment 3

[0048] This embodiment is basically the same as Embodiment 1 and Embodiment 2. For the sake of brevity of description, in the description process of this embodiment, no longer describe the same technical features as Embodiment 1 and Embodiment 2, and only illustrate this embodiment and its the difference:

[0049] The aluminum-air battery provided in this example adopts the same external structure as that in Example 2. The difference is that the hollow reaction tank 5 in this embodiment is provided with a separator 10, and the separator 10 divides the hollow reaction tank 5 into a plurality of independent power generation areas, and the number of power generation areas is the same as the number of air electrodes 2 , a plurality of air electrodes 2 can also be set in one power generation area, the principle is the same as that described in Embodiment 2. In this way, multiple small battery units can be connected in series to generate power, and the power generation areas are co...

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Abstract

The invention relates to the field of air batteries, and discloses an aluminum air battery. The aluminum air battery comprises a power generating region defined by a hollow reaction pool, wherein an aluminum object, liquid-state metal or liquid-state metal alloy, electrolyte and an air electrode are arranged in the power generating region; in a work state, the aluminum object, the liquid-state metal and the electrolyte are positioned in the power generating region; the aluminum object is soaked into the liquid-state metal; the electrolyte is in contact with the aluminum object soaked into the liquid-state metal; oxygen gas adsorbed by the air electrode is input into the electrolyte; an electrode plate is used for outputting charges. The aluminum air battery provided by the invention has the advantages that an oxide film on the surface of the aluminum object in the aluminum air battery is removed by using the liquid-state metal, so that the aluminum object is activated; the aluminum air battery is triggered to generate electricity; the hydrogen evolution corrosion of the aluminum object can be effectively inhibited; the battery power generation efficiency is improved; the advantages of high-energy-density, high power density and high discharging efficiency are realized; the manufacturing cost is low.

Description

technical field [0001] The invention relates to the field of air batteries, in particular to an aluminum-air battery. Background technique [0002] Metal-air batteries have become an ideal energy storage device and power source due to their low production cost, environmental protection and non-toxicity, convenient and safe storage and transportation. Metal aluminum, as the most abundant metal element in the earth's crust, is cheap, environmentally friendly and safe, has low internal resistance, high specific energy, and long storage life, and is an ideal negative electrode material. Aluminum-air battery is a kind of air battery that is widely researched and applied at this stage. [0003] The aluminum-air battery in the prior art uses aluminum or aluminum alloy as the negative electrode and oxygen in the air as the positive electrode. Under the joint action of the electrolyte and the catalyst, an electrochemical reaction occurs to form a current to generate electricity. Th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M12/06H01M8/04298
CPCH01M8/04298H01M12/06Y02E60/10Y02E60/50
Inventor 徐硕刘静
Owner YUNAN JINGCHUANG LIQUID METAL THERMAL CONTROL TECH RES & DEV CO LTD
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