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Preparation and application of flower-shaped molybdenum disulfide coated spherical sisal carbon electrode material

A molybdenum disulfide, spherical technology, applied in the field of electrochemical electrode materials, biomass materials and inorganic materials molybdenum disulfide, can solve the problem of low specific capacity of sisal fiber carbon, poor conductivity of molybdenum disulfide, and poor structural stability and other problems, achieve good conductivity, low cost, and solve the effect of poor conductivity of flower-shaped molybdenum disulfide

Inactive Publication Date: 2019-01-11
GUILIN UNIVERSITY OF TECHNOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The theoretical specific capacity of molybdenum disulfide reaches 670mAh / g, but there are defects such as low electronic conductivity and poor structural stability.
It not only solves the problem of low theoretical specific capacity of sisal fiber carbon, but also solves the problem of poor conductivity of molybdenum disulfide

Method used

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  • Preparation and application of flower-shaped molybdenum disulfide coated spherical sisal carbon electrode material
  • Preparation and application of flower-shaped molybdenum disulfide coated spherical sisal carbon electrode material
  • Preparation and application of flower-shaped molybdenum disulfide coated spherical sisal carbon electrode material

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Experimental program
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Effect test

Embodiment

[0027] (1) Weigh 3 g of washed and dried sisal fiber, cut it into 2-3 cm thin sections with scissors, and put it into a polytetrafluoroethylene reaction kettle. Add 70mL of hydrochloric acid solution with a concentration of 4mol / L, put it in a blast oven at 160°C for 10 hours, cool to room temperature, filter with deionized water and absolute ethanol solution until the pH becomes neutral. Finally, it was dried in an oven at 80° C. for 12 hours to obtain a pre-product 1 .

[0028](2) Put the pre-product obtained in step (1) into a nitrogen tube furnace, set the gas flow rate at 60mL / min and the heating rate at 3°C / min, and calcinate to 700°C, and the holding time is 1 hour . After cooling to room temperature, spherical sisal charcoal (SSFC) is obtained, which has a solid spherical structure, a size between 1 and 3 μm, and a smooth surface without impurities.

[0029] (3) First weigh 0.3g of the SSFC obtained in step (2) and put it into a polytetrafluoroethylene reactor, then ...

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Abstract

The invention discloses the preparation and application of a flower-shaped molybdenum disulfide coated spherical sisal carbon electrode material. Flower-like molybdenum disulfide coated spherical sisal carbon (MoS2 <at> SSFC) is prepared by hydrothermal carbonization of spherical sisal carbon with molybdenum trioxide as molybdenum source, thioacetamide as sulfur source and urea as reducing agent.MoS2 <at> SSFC is used as negative electrode material for lithium ion battery. The concrete preparation steps include: (1) preparation of spherical sisal flax charcoal (SSFC); (2) composite molybdenumdisulfide, hydrothermal reaction; (3) carbonization. As that anode material of the lithium ion battery, the flower-shaped molybdenum disulfide coat spherical sisal carbon (MoS2 <at> SSFC) prepared bythe invention is cheap and easy to obtain, simple in experimental process and easy to control in condition, and has the advantages of good conductivity, good discharge specific capacity and the likebecause of its unique structure, which is conducive to Li + insertion and embedding.

Description

technical field [0001] The invention discloses a preparation method and application of a flower-like molybdenum disulfide-coated spherical sisal carbon electrode material, which belongs to the field of combining biomass materials and inorganic material molybdenum disulfide, and also belongs to the field of electrochemical electrode materials. Background technique [0002] Lithium-ion batteries have been put into the commercial industry as early as the 1990s. So far, lithium-ion batteries are still the key to the battery life of many electronic products. Common lithium-ion batteries on the market, graphite materials are used as negative electrode materials, and have strong It has advantages such as high stability and low cost, but it has a fatal feature-low theoretical specific capacity. The contradiction between the increasing power demand and the low battery life of existing products has prompted people to step up the pace of research and development of lithium-ion batterie...

Claims

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Application Information

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IPC IPC(8): H01M4/36H01M4/58H01M4/583H01M10/0525C01B32/05C01G39/06
CPCH01M4/366H01M4/5815H01M4/583H01M10/0525C01B32/05C01G39/06C01P2006/40C01P2004/80C01P2004/61Y02E60/10
Inventor 覃爱苗莫子琳廖雷陈硕平黄海源
Owner GUILIN UNIVERSITY OF TECHNOLOGY
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