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Preparation method of air battery

An air battery and air electrode technology, which is applied to battery electrodes, fuel cell half-cells, secondary battery-type half-cells, circuits, etc., to achieve excellent discharge performance

Inactive Publication Date: 2018-04-20
张志霞
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are few researches on metal borides as battery anode materials at home and abroad, mainly focusing on the application of low-power batteries such as button-type batteries, and there are no public reports on the application of them in higher-power equipment and power batteries.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A method for preparing an air battery, comprising the steps of:

[0021] (1) Preparation of porous VB 2 Negative plate:

[0022] VB with an average particle size of 3 μm 2 Mix the powder and 37μm Ni powder evenly, add a pore-forming agent, weigh the above-mentioned mixed powder and press it in a φ30mm mold, the forming pressure is 160 MPa, and the holding time is 3 minutes; the forming blank is placed under the protection of high-purity argon Sintering treatment in a tube furnace, porous VB can be obtained after cooling in the furnace 2 Negative plate;

[0023] (2) With porous VB 2 Negative sheet preparation VB 2 Air battery:

[0024] porous VB 2 The negative electrode is the negative electrode, and the air electrode is the positive electrode to assemble VB 2 air battery.

[0025] The air electrode consists of a diffusion layer, a current collector, and a catalytic layer with an area of ​​10 cm 2 ; where the catalytic layer is Mn0 2 , the diffusion layer, tha...

Embodiment 2

[0028] On the basis of Example 1, the pore forming agent is 15wt% NH 4 HC0 3 . VB at this time 2 The discharge performance of the air battery is the best: the discharge capacity is 7792 mAh, the discharge specific capacity is 3463 mAh / g, the Coulombic efficiency is 85.30%, and the discharge specific energy is 2370 mWh / g.

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Abstract

The invention relates to the technical field of an inorganic material, and particularly relates to a preparation method of an air battery. The preparation method of the air battery comprises the following steps of: (1) preparing a porous VB2 negative electrode plate; and (2) preparing the VB2 air battery by the porous VB2 negative electrode plate. According to the invention, the prepared porous VB2 negative electrode plate is excellent in discharge performance, and can reach specific discharge capacity of a range of 3,216 to 3,463 mAh / g; and when a 15wt% NH4HC03 pore former is added, porosityof the porous VB2 negative electrode plate prepared by sintering is 60.91%, and at the moment, the VB2 air battery has the optimal discharge performance of 7,792 mAh of discharge capacity, 3,463 mAh / gof specific discharge capacity, 85.30% of coulombic efficiency and 2,370 mWh / g of specific discharge energy.

Description

technical field [0001] The invention relates to the technical field of inorganic materials, in particular to a preparation method of an air battery. Background technique [0002] With the rapid development of modern science and technology, the demand for energy continues to grow, and resource and environmental problems become increasingly severe. Therefore, accelerating the development of new cheap and clean energy has become one of the current research hotspots. Among them, chemical power sources, as one of the clean and efficient energy sources, have received high attention because of their high efficiency, convenience, and safety. Traditional chemical batteries, such as zinc-manganese batteries, have high capacity, long storage period, and good low-temperature performance, and are widely used in daily life, but they contain toxic substances, which are not good for the human body and the environment; lead-acid batteries have reliable performance, low cost, and long service...

Claims

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Application Information

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IPC IPC(8): H01M12/08H01M4/38
CPCH01M4/38H01M12/08H01M2004/021Y02E60/10
Inventor 张志霞
Owner 张志霞
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