Carbon-coated foamed aluminium compound and preparation method thereof, current collector and filtering material

A foamed aluminum and composite technology, applied in the field of materials, can solve the problems of uncontrollable activity, poor mechanical strength, narrow electrochemical window, etc., and achieve the effect of improving interface contact effect, improving mechanical strength, and reducing contact resistance.
CN109786757AInactive Publication Date: 2019-05-21ZHONGTIAN ENERGY STORAGE TECH +2
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ZHONGTIAN ENERGY STORAGE TECH
Publication Date
2019-05-21
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a carbon-coated porous aluminum compound. The compound is of a coated core-shell structure, the core body is foamed aluminium formed by an aluminum wire skeleton and a three-dimensional communication hole, the shell layer is a carbon layer having a plurality of micropores, the carbon layer is uniformly coated on the surface of the aluminum wire skeleton, and the carbon layerhas a thickness of 0.34 nm to 5 um. In the carbon-coated porous aluminum compound provided by the invention, the foamed aluminium is formed by the aluminum wire skeleton and the three-dimensional communication hole, the surface of the aluminum wire skeleton is uniformly and densely coated with a thin carbon layer having a thickness of nanometer to several micrometers to avoid formation of an oxide film, and compared with the conventional porous aluminum material, the mechanical strength is effectively improved; when being used as an electrochemical energy storage current collector, the contact resistance with an electrode material can be reduced; and the microporous structure carbon layer can not only function to improve the conductivity and improve interface contact effect, but also hasenergy storage and active substance fixation functions, thereby improving the stability of an electrochemical energy storage device.
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Description

technical field

[0001] The invention relates to the technical field of materials, in particular to a carbon-coated aluminum foam composite, a preparation method thereof, a current collector and a filter material. Background technique

[0002] This section is intended to provide a background or context for implementations of the invention that are recited in the claims. The descriptions herein are not admitted to be prior art by inclusion in this section.

[0003] Aluminum-based materials are light in weight, high in weight, and excellent in performance. They are widely used in industry, mainly including various electrical conduction, heat dissipation, sound insulation, and mechanical applications (such as cushioning, weight reduction, and strength support). At the same time, the preparation of aluminum into a porous film-like material can be used as a current collector for various energy storage devices, which is of great value in the field of electrochemical energy storage...

Claims

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