Pyrolysis hard carbon material and preparation method and use thereof

A technology for pyrolyzing hard carbon and hard carbon, which is applied in the direction of electrolytic capacitors, electrical components, battery electrodes, etc., to achieve the effects of easy control, simple process and wide application
CN102956876BActive Publication Date: 2015-09-16INST OF PHYSICS - CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
INST OF PHYSICS - CHINESE ACAD OF SCI
Publication Date
2015-09-16

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Abstract

The invention provides a pyrolytic hard charcoal material and a preparation method and a use thereof. The pyrolytic hard charcoal material is a two dimensional plane-similar sheeting material which is formed by pyrolysing a precursor of the hard charcoal, wherein the average thickness is 1-200nm and the geometric surface area is 10-2000 square meter / g. Micropores or mesopores exist in the pyrolytic hard charcoal material. The invention further provides a method of the pyrolytic hard charcoal material. The sheet pyrolytic hard charcoal material similar to graphene in shape is extremely wide in application and can be applied to preparing a cathode material of a lithium ion battery or a sodium ion battery, an electrode material of an electrochemical capacitor, a carrier for a fuel cell and a metal air battery electrode catalyst, a composite material with great toughness effect, a toxic material absorbent, an absorbent for special use, and a decolorising agent and a gas sensitive element in food production.
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Description

technical field

[0001] The invention relates to a carbon material and a preparation method thereof, in particular to a pyrolytic hard carbon material and a preparation method and application thereof. Background technique

[0002] Hard carbon refers to non-graphitizable carbon, which is pyrolytic carbon of high molecular polymer. For a long time, hard carbon materials have been widely concerned as anode materials for lithium-ion batteries due to their high specific capacity, long cycle life, good power performance, and low cost. It can also be used as anode materials for sodium-ion batteries, electrochemical Electrode materials for capacitors, carriers for chemical and electrochemical reaction catalysts, used in gas sensors, etc.

[0003] The application of hard carbon materials and the influence of the structure and morphology of hard carbon materials on the application effect are always important contents of the material research. Many studies have found that the internal...

Claims

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