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Manganese-aluminum containing anode material and preparation method thereof, as well as air cell prepared by using anode material

A manganese-aluminum alloy and air battery technology, which is applied to fuel cell type half cells and primary cell type half cells, battery electrodes, circuits, etc. Mitigation of harmful effects, cost reduction effect

Inactive Publication Date: 2012-12-12
HENAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The purity of the raw material aluminum used in today's aluminum-air batteries is above 99.9%, which is mainly to reduce the self-corrosion of aluminum anode materials caused by impurity element iron, but high-purity aluminum is expensive

Method used

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  • Manganese-aluminum containing anode material and preparation method thereof, as well as air cell prepared by using anode material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] The cathode of the air battery is composed of a catalytic layer, a nickel mesh conductive framework and a waterproof and breathable layer, in which the catalytic layer is γ-MnO 2 1. Activated carbon and polytetrafluoroethylene are mixed and rolled at a weight ratio of 0.5:2:1 to make a 0.5mm thick film. The waterproof layer is made of polytetrafluoroethylene and acetylene black at a weight ratio of 1:1 to make a 0.3mm thick film. Finally, the catalytic layer, nickel mesh and waterproof and breathable layer are laminated to form a 0.3mm thick air cathode. The electrolyte is 4M NaCl.

[0017] The weight percentage of each component of the manganese aluminum alloy anode material is: Mg: 0.05%; Sn: 1%; Ga: 2.5%; Mn: 0.1%; the rest is Al.

[0018] Under the protection of argon, the aluminum ingots were melted in the crucible of the ZGJL0.01-40-4 induction melting furnace at a temperature of 700 °C, and then magnesium ingots, aluminum-manganese intermediate alloys (90%Al-10%...

Embodiment 2

[0020] The cathode of the air battery is composed of a catalytic layer, a nickel mesh conductive framework and a waterproof and breathable layer, in which the catalytic layer is γ-MnO 2 1. Activated carbon and polytetrafluoroethylene are mixed and rolled at a weight ratio of 2:4:3 to make a 0.3mm thick film. The waterproof layer is made of polytetrafluoroethylene and acetylene black at a weight ratio of 1:1 to make a 0.35mm thick film. Finally, the catalytic layer, nickel mesh and waterproof and breathable layer are laminated to form a 0.5mm thick air cathode. The electrolyte is 2M NaCl.

[0021] The weight percentage of each component of the manganese aluminum alloy anode material is: Mg: 2.5%; Sn: 0.05%; Ga: 0.05%; Mn: 1%; the rest is Al.

[0022] Under the protection of argon, the aluminum ingots were melted in the crucible of the ZGJL0.01-40-4 induction melting furnace at a temperature of 680 °C, and then magnesium ingots, aluminum-manganese intermediate alloys (90%Al-10%Mn...

Embodiment 3

[0024] The cathode of the air battery is composed of a catalytic layer, a nickel mesh conductive framework and a waterproof and breathable layer, in which the catalytic layer is γ-MnO 2 , Activated carbon and polytetrafluoroethylene are mixed and rolled at a weight ratio of 1:3:2 to make a 0.4mm thick film, and the waterproof layer is made of polytetrafluoroethylene and acetylene black mixed and rolled at a weight ratio of 1:1 to make a 0.5mm thick film Finally, the catalytic layer, nickel mesh and waterproof and breathable layer are laminated to form a 0.35mm thick air cathode. The electrolyte is 1M NaCl.

[0025] The weight percentage of each component of the manganese aluminum alloy anode material is: Mg: 2%; Sn: 1.5%; Ga: 1%; Mn: 0.5%; the rest is Al.

[0026] Under the protection of argon, the aluminum ingots were melted in the crucible of the ZGJL0.01-40-4 induction melting furnace at a temperature of 690 °C, and then magnesium ingots, aluminum-manganese intermediate al...

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Abstract

The invention discloses a manganese-aluminum containing anode material for an air cell, and a preparation method and an application of the manganese-aluminum containing anode material. The air cell comprises a manganese-aluminum containing anode, an air cathode and neutral electrolyte. The anode material comprises the following elements in percentage by weight: 0.05 to 2.5 percent of Mg, 0.05 to 1.5 percent of Sn, 0.05 to 2.5 percent of Ga, 0.1 to 1 percent of Mn and the balance of Al, and is prepared through an inert gases protection induction smelting method. With the adoption of the manganese-aluminum containing anode material, the open-circuit voltage is negative (minus 1.6 to minus 1.8V (vs.SHE)), the anode utilization is high (larger than or equal to 94%), the self-corrosion speed is low (smaller than or equal to 0.03mg / cm<2>*h), the surface corrosion is uniform, and the manganese-aluminum containing anode material belongs to high-performance anode material for the air cell operated in a neutral solution.

Description

technical field [0001] The invention relates to the field of air batteries, in particular to an air battery using manganese-containing aluminum alloy as an anode material and a preparation method of the anode material. Background technique [0002] Metal-air battery is a new generation of green battery, which has low manufacturing cost, non-toxicity, high specific energy, recyclable raw materials, and superior performance. At present, metal-air batteries that have been studied more include zinc-air batteries, aluminum-air batteries, and lithium-air batteries, etc., and only zinc-air batteries are closest to industrialization. Since aluminum is more active than zinc in the potential series, a higher battery voltage can be obtained, and one aluminum atom can release three electrons, while one zinc atom releases two electrons, and aluminum can increase the energy of the battery. In addition, aluminum is a cheap metal that can be produced in large quantities, so the research on...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/62H01M4/46H01M12/06
CPCY02E60/128Y02E60/10
Inventor 马景灵文九巴翟文霞张清李全安
Owner HENAN UNIV OF SCI & TECH
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