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A kind of preparation method of metal chloride-graphite intercalation compound electrode material and application thereof

A graphite intercalation and chloride technology, applied in active material electrodes, negative electrodes, battery electrodes, etc., can solve problems such as chlorine toxicity, and achieve the effects of large intercalation amount, simple process and stable intercalation structure.

Active Publication Date: 2022-07-12
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chlorine gas is highly toxic, making this preparation method a relatively large safety hazard

Method used

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  • A kind of preparation method of metal chloride-graphite intercalation compound electrode material and application thereof
  • A kind of preparation method of metal chloride-graphite intercalation compound electrode material and application thereof
  • A kind of preparation method of metal chloride-graphite intercalation compound electrode material and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Weigh 0.2g of graphite powder and 1.0g of bismuth trichloride, add them into an agate mortar, grind them uniformly for 5 minutes, and then transfer them to a reaction kettle. Add 0.8 mL of sulfonyl chloride to the reaction kettle. The above operations are completed in a glove box, and then Take the reaction kettle out of the glove box and put it into a muffle furnace for the reaction. The temperature is from room temperature to 5 °C min. -1 The heating rate was raised to 450 °C, and the temperature was kept constant for 24 h. After the reaction, the product was taken out, washed with absolute ethanol for 3 times, and filtered with suction. The filter cake was placed in a vacuum drying box and dried at 80 °C for 10 h to obtain trichloride. Bismuth-graphite intercalation compounds. Its X-ray diffraction pattern, such as figure 1 It can be seen that, compared with the characteristic diffraction peak of the (002) crystal plane of graphite, the bismuth trichloride-graphite ...

Embodiment 2

[0018] Weigh 0.2g of graphite powder and 1.0g of bismuth trichloride, add them into an agate mortar, grind them uniformly for 5 minutes, and then transfer them to a reaction kettle, and add 1.5 mL of sulfonyl chloride to the reaction kettle. The above operations are completed in a glove box, and then Take the reaction kettle out of the glove box and put it into a muffle furnace for the reaction. The temperature is from room temperature to 5 °C min. -1 The heating rate was raised to 200 °C, and the temperature was kept constant for 10 h. After the reaction, the product was taken out, washed with anhydrous ethanol for 3 times, and then suction filtered. The filter cake was placed in a vacuum drying box and dried at 80 °C for 10 h to obtain trichloride. Bismuth-graphite intercalation compounds. Its scanning electron microscope photos, such as figure 2 It can be seen that the bismuth trichloride-graphite intercalation compound shows a typical flake structure, which is similar to...

Embodiment 3

[0020] Weigh 0.5g of graphite powder and 2.5g of tungsten hexachloride, add them into an agate mortar, grind them uniformly for 5 minutes, and then transfer them to the reaction kettle, and add 0.8 mL of sulfonyl chloride to the reaction kettle. The above operations are completed in a glove box, and then Take the reaction kettle out of the glove box and put it into a muffle furnace for the reaction. The temperature is from room temperature to 5 °C min. -1 The heating rate was raised to 350 °C, and the temperature was kept constant for 10 h. After the reaction was completed, the product was taken out, washed with absolute ethanol for 5 times, and then suction filtered. Tungsten-graphite intercalation compound.

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Abstract

The invention belongs to the technical field of carbon-based material preparation, a preparation method of metal chloride-graphite intercalation compound electrode material and application thereof. The preparation method comprises the following steps: (1) mixing graphite powder, metal chloride and sulfonyl chloride In the reaction kettle, after the reaction is completed, the product is taken out, rinsed repeatedly with absolute ethanol, and then suction filtered, and the filter cake is placed in a drying oven for drying to obtain the metal chloride-graphite intercalated compound; (2) take the prepared in step 1. Metal chloride-graphite intercalation compound, conductive carbon black and polyvinylidene fluoride were added to an agate mortar, and N-methylpyrrolidone was added dropwise to grind, and then the grinding slurry was coated on copper foil and placed in a vacuum drying oven After drying, it is punched into a disk with a punching machine to obtain a metal chloride-graphite intercalation compound target material electrode. The metal chloride-graphite intercalation compound prepared by the invention has the advantages of large intercalation amount, low graphite defect density and the like.

Description

technical field [0001] The invention relates to a preparation method and application of a metal chloride-graphite intercalation compound electrode material, and belongs to the technical field of carbon-based material preparation. Background technique [0002] The development of new renewable energy requires the support of large-scale energy storage systems. Among many energy storage technologies, secondary batteries have the advantages of strong adaptability, high energy conversion efficiency and simple maintenance. stored energy system. The reserves of sodium in the earth's crust ranks fourth, and it has the advantages of abundant resources and easy extraction. Therefore, sodium-ion batteries are expected to be applied in the field of large-scale electrical energy storage. The research on electrode materials is the key to the development of energy storage technology for sodium-ion batteries. Only by developing electrode materials with stable intercalation / deintercalation c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/58H01M4/62H01M10/054
CPCH01M4/582H01M4/625H01M10/054H01M2004/027Y02E60/10
Inventor 于畅任伟成邱介山王钊
Owner DALIAN UNIV OF TECH
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