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Aluminum alloy anode material for battery

A technology of anode material and aluminum alloy, which is applied in the direction of battery electrodes, circuits, electrical components, etc., can solve the problems of low working voltage and low actual utilization rate, and achieve high stable working potential, high utilization rate and large output current Effect

Inactive Publication Date: 2009-03-18
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, on the one hand, the materials involved in the above-mentioned patents or researches have a large current density (≥600mA / cm 2 ) The working voltage is not high; on the other hand, the actual utilization rate of the aluminum alloy anode is not high in the actual battery stack environment

Method used

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  • Aluminum alloy anode material for battery

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Effect test

Embodiment 1

[0014] Using aluminum with a purity of ≥99.99% as raw material, the mass percentages of each component of the aluminum alloy anode are selected as: Mg: 1.5%, Bi: 0.2%, Sn: 0.4%, Ga: 0.3%, after being prepared, use ordinary aluminum alloy casting method And processing technology to prepare Al-Mg-Bi-Sn-Ga five-element aluminum alloy anode material.

Embodiment 2

[0016] Using aluminum with a purity of ≥99.99% as raw material, the mass percentages of each component of the aluminum alloy anode are selected as: Mg: 1.0%, Bi: 0.01%, Sn: 0.01%, Ga: 0.01%, after being prepared, use ordinary aluminum alloy casting method And processing technology to prepare Al-Mg-Bi-Sn-Ga five-element aluminum alloy anode material.

Embodiment 3

[0018] Using aluminum with a purity of ≥99.99% as raw material, the mass percentages of each component of the aluminum alloy anode are selected as: Mg: 0.5%, Bi: 0.025%, Sn: 0.085%, Ga: 0.035%, after being prepared, use ordinary aluminum alloy casting method And processing technology to prepare Al-Mg-Bi-Sn-Ga five-element aluminum alloy anode material.

[0019] The electrochemical performance detection method of the prepared aluminum alloy anode is:

[0020] (1) The thickness of the aluminum alloy anode after rolling is (0.5±0.02)mm, and the effective working area is 1cm 2 , The reference electrode is mercury / mercury oxide (Hg / HgO) electrode, the auxiliary electrode is graphite, the area is 4cm 2 ;

[0021] (2) The thickness of the aluminum alloy anode after rolling is (0.5±0.02)mm, and the working area is 100cm 2 , The positive electrode is silver oxide (AgO), the area is 100cm 2 ;

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Abstract

The invention discloses an aluminum alloy anode material of batteries, which uses aluminum whose purity is higher or equal to 99.99% as raw materials. Magnesium (Mg), stannum (Sn), gallium (Ga) and bismuth (Bi) are added, and the mass percentage of elements which are added is that Mg: 0.5-1.5%, Bi: 0.01-0.2%, Sn: 0.01-0.4%, Ga: 0.01-0.3%, and the mass content of impurities is equal to or less than 0.01%. The invention has the advantages of high operating factor of the cathode and the anode of a working potential, stable output of big power and even corrosion on the surface.

Description

Technical field [0001] The invention relates to a long-term, high-power reserve chemical power source constituent material, particularly an aluminum alloy anode material for batteries. Background technique [0002] As an anode material, metal aluminum has a negative electrode potential, which is -2.35V (vs SHE) in an alkaline medium. It has high specific energy, low price, good processing performance and rich resources. The aluminum anode capacity is 2.98Ah / g, second only In lithium; and its volumetric capacity is 8.05Ah / cm 3 , Higher than all other metal materials, is an ideal anode material. [0003] Compared with other batteries, the electrochemical power supply with aluminum as the anode has the advantages of higher cell voltage, higher specific energy, and higher energy density. For example, the aluminum / silver oxide battery, as the power source of the underwater propulsion system, can reach 2 to 3 times the specific energy of the zinc silver battery and the magnesium / silver...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/46
CPCY02E60/10
Inventor 马正青左列庞旭
Owner CENT SOUTH UNIV
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