Carbon-coated aluminum member and method for producing the same

Abstract

Disclosed is a carbon-coated aluminum member wherein adhesion between a carbon-containing layer and an aluminum material as well as adhesion between carbon-containing particles contained in the carbon-containing layer are improved. Also disclosed is a method for producing such a carbon-coated aluminum member. Specifically disclosed is a carbon-coated aluminum member comprising an aluminum foil (1), a carbon-containing layer (2) formed on the surface of the aluminum foil (1), and an intervening layer (3) which contains aluminum carbide and is formed on at least a part of the surface of the aluminum foil (1) between the carbon-containing layer (2) and the aluminum foil (1). The carbon-containing layer (2) contains a plurality of carbon-containing particles (22), and an organic matter layer (23) is formed on the surface of each carbon-containing particle (22). Also specifically disclosed is a method for producing a carbon-coated aluminum member, wherein a resin layer is formed on the surface of each carbon-containing particle (22), then the resin-coated carbon-containing particles are adhered to the surface of an aluminum foil (1), and then the aluminum foil (1) and the resin-coated carbon-containing particles are placed and heated in a space containing a hydrocarbon-containing material.

Description

Technical field [0001] The present invention relates to a carbon-coated aluminum material having the surface of an aluminum material coated with carbon and a manufacturing method thereof, in particular to the carbon-coated aluminum used in the current collectors and electrodes of various capacitors, and the current collectors and electrodes of various batteries Material and its manufacturing method. Background technique [0002] Conventionally, when an aluminum material is used directly as a material of a current collector or an electrode, the oxide film formed on the surface of the aluminum material is passivated, and as a result, there is a problem that the surface conductivity is reduced and the surface is insulated. In order to solve this problem, a method of improving the conductivity of the surface by coating carbon on the surface of the aluminum material has been adopted. [0003] For example, there is a method of forming a carbon film on the surface of an aluminum material...

AI Technical Summary

Problems solved by technology

[0005] However, in these production methods, there is still a problem that the adhesion between the active material layer and the aluminum material and the adhesion between the aluminum carbide film and the aluminum material are still insufficient.

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