Carbon-based coating having high electrical conductivity on surface of substrate and preparation method of coating

A high-conductivity, matrix technology, applied in the field of carbon-based coatings and their preparation, can solve problems such as limiting the performance of materials and devices, and achieve the effects of easy and precise control, uniform coating thickness, and reduced resistivity
CN104388902AInactive Publication Date: 2015-03-04NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
Publication Date
2015-03-04
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a carbon-based coating having high electrical conductivity on the surface of a substrate. The coating is composed of a copper transition layer and a graphite-like amorphous carbon surface layer; the deposition method of the coating is a DC magnetron sputtering method. Compared with the prior art, the carbon-based coating having high electrical conductivity on the surface of the substrate is capable of ensuring that the structure of the amorphous carbon coating is mainly in the sp2 bond state to reduce the specific resistance, and meanwhile, the copper transition layer is advantageous for inducing the chain scission of the aromatic cyclic sp2 structure in the graphite-like amorphous carbon surface layer and more sp2 chain structures can be formed to increase free electrons, and therefore, the specific resistance of the carbon coating is further reduced and the electrical conductivity of the same is improved.
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Description

technical field

[0001] The invention belongs to the technical field of material surface coatings, in particular to a carbon-based coating with high conductivity and a preparation method thereof. Background technique

[0002] In many electronic devices, the size of the contact resistance is the key to the structure and performance of the device. For example, in a solid aluminum electrolytic capacitor, the dense oxide film on the surface of the cathode aluminum foil causes a large contact resistance between the electrolyte and the aluminum foil electrode, resulting in a huge loss of capacitor capacity. In the proton exchange membrane fuel cell in the energy field, due to the high contact resistance between the passivation layer on the surface of the stainless steel bipolar plate and the carbon fiber diffusion layer, the output power of the fuel cell is greatly reduced. The contact resistance mentioned in the above electronic devices is affected by two factors: the contact are...

Claims

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