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Rechargeable metal hydride air battery

A technology of air batteries and hydrides, applied in electrical components, battery electrodes, circuits, etc., can solve problems such as diaphragm penetration and battery failure, and achieve the effects of increasing the number of times of use, improving life, and high social and economic benefits

Inactive Publication Date: 2010-06-23
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Mainly due to the formation of zinc dendrites during recharging, it is easy to cause the diaphragm to penetrate and cause the battery to fail

Method used

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  • Rechargeable metal hydride air battery
  • Rechargeable metal hydride air battery
  • Rechargeable metal hydride air battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] Embodiment one: with LaNi 5 Rechargeable air battery as anode material

[0055] Sieve LaNi with particle size less than 10 microns 5 fine powder, LaNi 5 Fine powder and sodium carboxymethyl cellulose solution (5wt.%) as a binder are prepared into a slurry in a mass ratio of 1:1, coated into foamed nickel, dried at room temperature, and pressed into shape to obtain LaNi 5 The negative terminal of the air battery. LaNi 5 The mass ratio to nickel foam is 1:0.5.

[0056] Disperse carbon black in water to form a suspension with a mass ratio of 1:15; add glacial acetic acid to adjust the pH value to 2.5, and stir at room temperature for 30 minutes; the mass ratio of carbon black and pyrrole is 1:0.3, add pyrrole and stir for 5 minutes, Then add cobaltous chloride as the initiator of polymerization, the mass ratio of carbon black and cobaltous chloride is 1: 4, then add 10 milliliters of hydrogen peroxide (concentration is 0.5wt.%) to accelerate polymerization speed, afte...

Embodiment 2

[0058] Embodiment two: with MmNi 3.9 V 0.1 Air battery with Al as negative electrode material

[0059] MmNi with a particle size greater than 10 microns and less than 100 microns 3.9 V 0.1 Al fine powder and polyvinyl alcohol (PVA) solution (5wt.%) were mixed at a mass ratio of 1:2 to form a slurry coated on copper foam, dried at room temperature and then pressed into shape to obtain a negative electrode for an air battery. MmNi 3.9 V 0.1 The mass ratio of Al to copper foam is 1:10.

[0060] Disperse carbon black in methanol to form a suspension with a mass ratio of 1:15, add hydrochloric acid to adjust the pH value to 3, and stir at room temperature for 20 minutes; the mass ratio of carbon black and pyrrole is 1:0.05, add pyrrole and stir for 10 minutes, Then add vanadium chloride as the initiator of the polymerization reaction, the mass ratio of carbon black and vanadium chloride is 1: 5, then add 15 milliliters of hydrogen peroxide (concentration is 0.5wt.%) to accele...

Embodiment 3

[0062] Embodiment three: with MlNi 4.5 co 0.25 Al 0.25 Air battery as negative electrode material

[0063] MlNi 4.5 co 0.25 Al 0.25 Fine powder (100 microns) and PVA aqueous solution (5wt.%) are mixed in a mass ratio of 1:3 to form a slurry, which is applied to a carbon fiber mat, dried at room temperature, and pressed into shape to obtain a negative electrode for an air battery, MlNi 4.5 co 0.25 Al 0.25 The mass ratio to carbon fiber felt is 1:0.05.

[0064]Disperse carbon black in chloroform to form a suspension, the mass ratio of which is 1:15, add hydrochloric acid to adjust the pH value to 3, and stir at room temperature for 10 min; the mass ratio of carbon black and pyrrole is 1:0.1, add pyrrole and stir for 5 min, Then add manganese chloride, cobalt chloride as the initiator of polymerization, the mass ratio of carbon black and manganese chloride, cobalt chloride is 1: 2.5: 2.5, then add hydrogen peroxide (concentration is 0.5wt.%) 20 milliliters or more Accele...

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Abstract

The invention relates to an air battery and aims at providing a rechargeable metal hydride air battery. In the batter, an anion-exchange membrane or polypropylene non-woven fabric can be taken as the diaphragm to separate a cathode and an anode; the transverse structure sequentially comprises a cathode current collection body, a porous cathode, a diaphragm, a carrier and an anode current collection body that are sealed by a sealing ring; the carrier is coated with an anode catalyst, and the anode current collection body is provided with an air channel; an anode terminal of the air battery is led out by the anode current collection body, and a cathode terminal thereof is led out by the cathode current collection body; and the porous cathode is loaded with hydrogen-stored metal as cathode material, and electrolyte solution is absorbed in the porous cathode. The invention can avoid the short circuit of the battery and the deformation of a zinc electrode after recharging for a plurality of times caused by the formation of dendritic crystal as zinc serves as the energy storage medium in a zinc air battery, so as to increase the use times of the air battery and prolong the service life of the air battery. In the invention, single batteries can be connected with each other in series for producing the high-power air battery, so as to meet the requirement as the power supply of an electric vehicle, thereby reducing the air pollution.

Description

technical field [0001] The present invention relates to an air battery and, in particular, to a rechargeable metal hydride air battery. Background technique [0002] The invention of the air battery has a history of hundreds of years. In 1878, the French scientist L. Meche used a platinum-containing porous carbon electrode instead of manganese dioxide in the zinc-manganese battery, and developed the technology of the zinc-air battery for the first time. In 1917, French scientist C. Ferry replaced platinum with activated carbon to absorb oxygen, and achieved the practical application of zinc-air batteries. In 1932, G.W. Heizer and E.A. Schmeichel published a zinc-air battery using alkaline electrolyte. In the 1960s, the development of high-power zinc-air batteries reached the stage of practical application due to the great success in the research on oxygen electrodes of normal-temperature fuel cells for aerospace. In the mid-1970s, a miniature button-type zinc-air battery w...

Claims

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Application Information

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IPC IPC(8): H01M12/06H01M4/38H01M4/04
CPCY02E60/128Y02E60/10
Inventor 李洲鹏刘宾虹
Owner ZHEJIANG UNIV
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