Novel powered aluminum positive electrode material and fabrication method of aluminum electrolytic capacitor

A technology of aluminum electrolytic capacitors and positive electrode materials, applied in the field of capacitance, can solve the problems of high energy consumption, high cost, and large pollution, and achieve the effects of low energy consumption, small pollution, and reduced pollution and energy consumption

Inactive Publication Date: 2018-06-15
HUNAN AIHUA GRP
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Problems solved by technology

[0004] The novel powder aluminum positive electrode material and the preparation method of aluminum electrolytic capacitors proposed by the present invention aim to solve the t

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  • Novel powered aluminum positive electrode material and fabrication method of aluminum electrolytic capacitor
  • Novel powered aluminum positive electrode material and fabrication method of aluminum electrolytic capacitor
  • Novel powered aluminum positive electrode material and fabrication method of aluminum electrolytic capacitor

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[0021] It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

[0022] Such as figure 1 As shown, the first embodiment of the present invention provides a method for preparing a novel powder aluminum cathode material for aluminum electrolytic capacitors, which includes the following steps:

[0023] Step S100, using spherical aluminum powder with a particle size between 50 nanometers and 100 microns as the main raw material, using one of ethanol, ethyl acetate, acetone, and special epoxy resin as a dispersing solvent and binder, The aluminum powder is pre-mixed, wherein the weight of the solvent accounts for 0.1 to 0.5 of the weight of the aluminum powder. Specifically, the prepared spherical aluminum powder with a certain particle size is mixed with different mixing, dispersing and bonding solvents.

[0024] Step S200: After the pre-mixed spherical aluminum powder is molded by a m...

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Abstract

The invention discloses a novel powdered aluminum positive electrode material and a fabrication method of an aluminum electrolytic capacitor. The preparation method comprises the steps of mixing spherical aluminum powder in advance by taking the spherical aluminum powder with a grain size being between 50 nanometers and 100 micrometers as a main raw material and taking one of ethyl alcohol, ethylacetate, acetone and special epoxy resin as a dispersion solvent and a binding agent, wherein the weight of the solvent accounts for 0.1-0.5 of the weight of the aluminum powder; pressing and formingthe pre-mixed spherical aluminum powder by a die or coating the spherical aluminum powder on a surface of an aluminum foil, sintering under a high-temperature vacuum condition to form a sintering body, and taking the formed sintering body material as a positive electrode of the aluminum electrolytic capacitor. The novel powdered aluminum positive electrode material and the fabrication method of the aluminum electrolytic capacitor, provided by the invention, have the advantages of small pollution, low energy consumption and low fabrication cost, and the fabricated aluminum electrolytic capacitor has high specific capacitance.

Description

technical field [0001] The invention relates to the technical field of capacitors, in particular to a novel powder aluminum positive electrode material for aluminum electrolytic capacitors and a preparation method for aluminum electrolytic capacitors. Background technique [0002] When making aluminum electrolytic capacitors, the positive electrode foil used in existing aluminum electrolytic capacitors is generally made by corroding aluminum foil, that is, under the action of strong acid, the aluminum foil corrodes tiny holes to increase the specific surface area of ​​the aluminum foil surface, but this This preparation method has large pollution, high energy consumption and high cost. [0003] Therefore, in the prior art, the positive electrode foil used in the preparation of aluminum electrolytic capacitors has large pollution, high energy consumption and high cost, which is an urgent problem to be solved. Contents of the invention [0004] The novel powder aluminum pos...

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Application Information

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IPC IPC(8): H01G9/045H01G9/052
CPCH01G9/045H01G9/0029H01G9/0525
Inventor 艾燕潘振炎贾明
Owner HUNAN AIHUA GRP
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