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Composite material as well as preparation method and application thereof

A technology of composite materials and raw materials, applied in the direction of active material electrodes, structural parts, electrical components, etc., can solve problems such as limited electrochemical performance

Pending Publication Date: 2022-02-18
GUANGDONG BRUNP RECYCLING TECH +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing technology has limited effects on increasing the specific surface area, improving the capacity of materials, and improving the electrochemical performance of carbon materials.

Method used

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  • Composite material as well as preparation method and application thereof
  • Composite material as well as preparation method and application thereof
  • Composite material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0075] This embodiment has prepared a kind of composite material, and specific preparation method is:

[0076] A1. Preparation of cellulose

[0077] A1a: Mix glucose, yeast extract, peptone, and sodium dihydrogen phosphate, the mixing mass ratio is 4:1:1:0.6, add citric acid to the mixture, the concentration of citric acid is 1.2g / L, stir well, and Bacillus colomai is fermented at 30°C for 15 days to form bacterial cellulose.

[0078] A1b: Put bacterial cellulose into 2M NaOH solution, stir for 20 hours, remove impurities and peel off pure cellulose, and then wash with deionized water several times until the pH is close to 7.

[0079] Glucose specification: D-(+)-glucose, GC, ≥99.5%, purchased from Aladdin; yeast essence (yeast extract powder): super pure, used for microorganisms, purchased from Aladdin; peptone: yeast peptone, purchased from Aladdin Latin; sodium dihydrogen phosphate: used in molecular biology, ≥99%, purchased from Aladdin.

[0080] A2. Preparation of comp...

Embodiment 2

[0085] In this embodiment, a kind of electrode material is prepared, and the specific preparation method is as follows:

[0086] B1. Electrode material

[0087] B1b: 75% of the prepared active material, 15% carbon black and 10% PVDF were evenly mixed in NMP, then coated on a copper foil, dried at room temperature for 24 hours, and then dried at 80°C for 24 hours, the dried The electrode material is cut into a disc, and the loading capacity of the active material is 1.5mg / cm 2 .

Embodiment 3

[0089] This embodiment has prepared a kind of composite material, and specific preparation method is:

[0090] A1. Preparation of cellulose

[0091] A1a: Mix glucose, yeast extract, peptone, and sodium dihydrogen phosphate, the mixing mass ratio is 4:1:1:0.6, add citric acid to the mixture, the concentration of citric acid is 1.2g / L, stir well, and Bacillus colomai is fermented at 30°C for 15 days to form bacterial cellulose.

[0092] A1b: Put bacterial cellulose into 2M NaOH solution, stir for 20 hours, remove impurities and peel off pure cellulose, and then wash with deionized water several times until the pH is close to 7.

[0093] Glucose specification: D-(+)-glucose, GC, ≥99.5%, purchased from Aladdin; yeast essence (yeast extract powder): super pure, used for microorganisms, purchased from Aladdin; peptone: yeast peptone, purchased from Aladdin Latin; sodium dihydrogen phosphate: used in molecular biology, ≥99%, purchased from Aladdin.

[0094] A2. Preparation of comp...

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Abstract

The invention discloses a composite material and a preparation method and application thereof.The composite material comprises carbon fibers and polyaniline particles attached to the carbon fibers, holes exist in the composite material, and the hole diameter of the holes is smaller than or equal to 4nm. A hierarchical structure and a nitrogen-containing structure (pyridine nitrogen, pyrrole nitrogen, nitric oxide and the like) can be introduced, so that the electrochemical performance of the material can be effectively improved; the nitrogen-doped composite material is carbonized and activated to synthesize a porous carbon material with a hierarchical pore structure, so that migration and storage of lithium ions are facilitated, and the capacity of the material is improved.

Description

technical field [0001] The invention belongs to the technical field of inorganic non-metallic materials, and in particular relates to a composite material and its preparation method and application. Background technique [0002] Carbon conductive materials have broad development potential since they were discovered. As a new type of conductive material, it has both good conductivity and high reversible capacity. At the same time, carbon materials are widely used in the preparation of lithium batteries because of their low insertion voltage, high stability, and tunable microstructure. With the increasing demand for the development of high-efficiency and high-storage energy storage battery materials, research on new battery systems to replace lithium-ion batteries has received extensive attention. [0003] Carbon-based materials have become a research hotspot for battery anode materials due to their high conductivity, low cost and chemical stability, but some carbon materials...

Claims

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Application Information

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IPC IPC(8): H01M4/36H01M4/48H01M4/583H01M4/60H01M4/62H01M10/052
CPCH01M4/362H01M4/583H01M4/625H01M4/483H01M4/606H01M10/052H01M2004/027Y02E60/10
Inventor 张振华李长东范霞毛林林阮丁山蔡勇
Owner GUANGDONG BRUNP RECYCLING TECH
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