Carbon material and preparation method and application thereof

A carbon material and carbon source technology, applied in chemical instruments and methods, nanocarbons, carbon nanotubes, etc., can solve the problems of complex preparation process of carbon nanotubes and high equipment requirements, and achieve improved battery rate performance, improved electrical conductivity, The effect of improving the conductivity of the electrode

Inactive Publication Date: 2020-11-27
CENT SOUTH UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the preparation process of carbon nanotubes is complex and requires high equipment

Method used

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  • Carbon material and preparation method and application thereof
  • Carbon material and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A method for preparing a carbon material, comprising the steps of:

[0037] (1) Weigh 10mmol and 30mmol of citric acid monohydrate and urea at a molar ratio of 1:3 respectively, add 100ml of deionized water to dissolve, then transfer to the reaction kettle for hydrothermal reaction at 180°C for 8h, after the reaction is completed, the product Evaporate the solvent in to obtain the carbon quantum dot precursor;

[0038] (2), take by weighing 2g step (1) gained organic quantum dot precursor and 20g ferric nitrate respectively, add 50ml deionized water to dissolve and then freeze-dry;

[0039] (3), the dried material in step (2) is sintered at 700° C. for 3 h to obtain a composite of carbon nanotubes and nanocarbon ring points containing iron element, pickling to remove iron element, washing with water until neutral, Dry to obtain carbon nanotubes and nano carbon ring point composite materials. Such as figure 1 shown.

Embodiment 2

[0041] It is basically the same as Example 1, except that the sintering temperature is 1000°C.

Embodiment 3

[0043] It is basically the same as Example 1, except that the sintering temperature is 1300°C.

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Abstract

The invention provides a carbon material as well as a preparation method and an application thereof, the carbon material comprises a carbon nano tube and a nano carbon ring point, the nano carbon ringpoint comprises one or two of a carbon nano ring and a carbon nano point, and the mass ratio of the carbon nano tube to the nano carbon ring point is 1: 100-10: 1. The carbon material disclosed by the invention is prepared by taking organic quantum dots as a precursor through one-step pyrolysis catalysis. The carbon nano tubes and the nano carbon ring points are uniformly distributed and organically combined together, so that surface contact and long-range conductivity between active material particles are considered, and an efficient conductive network is constructed; through the synergisticeffect of the two, the battery electrode conductivity is improved.

Description

technical field [0001] The invention relates to the technical field of conductive materials, in particular to a carbon material and its preparation method and application. Background technique [0002] The conductive agent material is an important part in the battery assembly process and has a significant impact on the electrochemical performance of the battery. Adding an appropriate amount of conductive agent to the electrode material can significantly enhance the electronic conductivity of the material, and can also build contact sites between material particles. At present, conductive carbon black is mainly used, but the granular structure of conductive carbon black leads to point contact between particles, which cannot form an effective long-range conductive network. [0003] Carbon nanotubes are carbon nanomaterials with a one-dimensional linear structure and have excellent mechanical, optical, and electrical properties. In recent years, with the continuous improvemen...

Claims

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Application Information

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IPC IPC(8): C01B32/15C01B32/16H01M4/62H01M10/0525B82Y40/00
CPCB82Y40/00C01B2202/22C01B32/15C01B32/16H01M4/625H01M10/0525Y02E60/10
Inventor王接喜李广超李新海颜果春王志兴郭华军戴雨晴胡启阳彭文杰
OwnerCENT SOUTH UNIV