A kind of carbon-coated aluminum foil with high temperature resistance, low resistance and high organic compatibility and preparation method thereof

Abstract

The invention relates to a high-temperature-resistant low-resistance high-organic-compatibility coated-carbon aluminum foil and a preparation method thereof. A carbon layer of the carbon-coated aluminum foil contains a co-existing mixture of graphite and linear carbon and is excellent in high temperature resistance, low resistance, and high organic system compatibility. According to the preparation method of the high-temperature-resistant low-resistance high-organic-compatibility coated-carbon aluminum foil, the limitation of a traditional chemical vapor precipitation carbon process that only hydrocarbon is adopted as a carbon source is broken through, a compound containing carbon element, hydrogen element and oxygen element or composite gas obtained by heating a mixture of the compound containing the carbon element, the hydrogen element and the oxygen element and a carbon material is used as a carbon source, so that the raw material is simple and is easily available, the process safety is controllable, and the prepared carbon-coated aluminum foil has advantages of high temperature resistance, low resistance, high carbon layer bonding rate, large specific surface area and high organic compatibility.

Description

technical field [0001] The invention relates to a carbon-coated aluminum foil with high temperature resistance, low resistance and high organic compatibility and a preparation method thereof. Specifically, the carbon-coated aluminum foil prepared by the preparation method of the present invention can be used as a current collector for aluminum electrolytic capacitors, especially solid aluminum electrolytic capacitors, supercapacitors, lithium-ion batteries and other devices, and belongs to the field of materials. Background technique [0002] Commonly used energy devices such as lithium-ion batteries, supercapacitors and aluminum electrolytic capacitors all require current collectors as electrode material carriers or electrical terminals. Aluminum foil is the most commonly used current collector material, and its main uses include: positive current collectors for lithium-ion batteries, positive and negative current collectors for supercapacitors, and negative current collect...

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Problems solved by technology

However, the amount of naturally occurring linear carbon (carbene carbon) is very small. According to the phase diagram of carbon, researchers try to synthesize carbon containing triple bonds or double bonds through the condensation of carbon vapor and liquid carbon or through phase transformation using graphite and diamond as raw materials. Alkyne and alkene polymers have been dehydrogenated and polycondensed by catalytic, electrochemical, photochemical or pyrolysis chemical reactions, etc., but because the experimental conditions are too harsh, the yield and purity are not high, so far it has not been possible to synthesize linear carbon in batches. Research on performance characteristics and practical applications is still relatively blank, and examples of its actual application in industrial products are even rarer

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