Carbon-coated molybdenum sulfide/water hyacinth biomass carbon composite material and preparation method and use thereof

A technology of biomass carbon and composite materials, which is applied in the field of negative electrode materials, can solve the problems of cumbersome preparation procedures and expensive preparation costs, and achieve the effects of wide sources, simple preparation process and low price

Inactive Publication Date: 2019-01-25
DONGGUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these methods can improve MoS to a certain extent 2 As the electrochemical performance of sodium-ion battery electrodes, but its reversible capacity and rate performance are still far from industrialization, and need to be improved
In addition, the preparation costs of carbon materials such as graphene and carbon nanotubes are often expensive and non-renewable materials, and the preparation procedures of these carbon materials are cumbersome and require a lot of time and energy.

Method used

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  • Carbon-coated molybdenum sulfide/water hyacinth biomass carbon composite material and preparation method and use thereof
  • Carbon-coated molybdenum sulfide/water hyacinth biomass carbon composite material and preparation method and use thereof
  • Carbon-coated molybdenum sulfide/water hyacinth biomass carbon composite material and preparation method and use thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] (1) Dissolve 0.15g of sodium molybdate in 60mL of deionized water, and stir at room temperature to form a colorless solution A;

[0035] (2) Disperse and dissolve 0.25 g of thioacetamide in solution A to form yellow solution B;

[0036] (3) Take 0.3g of peeled water hyacinth, cut it into pieces, after alcohol treatment, put it in solution B and stir it, transfer it to the reaction kettle, conduct a hydrothermal reaction at 200°C for 24 hours, wash, and dry to obtain MoS 2 / water hyacinth biomass carbon composite material;

[0037] (4) Weigh 0.15g of dopamine hydrochloride, dissolve it in 60mL of deionized water to form a solution, and then add MoS 2 / water hyacinth biomass carbon composite material soaked in it, 80 ℃ water bath polymerization reaction for 24 hours, washed and dried;

[0038] (5) Polymerize the above-mentioned dopamine to MoS 2 / Water hyacinth biomass carbon composite material is carbonized at 600 ℃ for 4 hours under inert gas argon to obtain carbon...

Embodiment 2

[0047] (1) Dissolve 0.3g of sodium molybdate in 60mL of deionized water, and stir at room temperature to form a colorless solution A;

[0048] (2) Disperse and dissolve 0.5 g of thioacetamide in solution A to form yellow solution B;

[0049] (3) Take 0.6g of water hyacinth, peel it and cut it into blocks. After alcohol treatment, put it in solution B and stir it, transfer it to the reaction kettle, and conduct a hydrothermal reaction at 200°C for 24 hours, wash and dry to obtain MoS 2 / water hyacinth biomass carbon composite material;

[0050] (4) Weigh 0.3g of dopamine hydrochloride, dissolve it in 60mL of deionized water to form a solution, and then add MoS 2 / water hyacinth biomass carbon composite material soaked in it, 80 ℃ water bath polymerization reaction for 12 hours, then let stand for 12 hours, washed and dried;

[0051] (5) MoS polymerized with dopamine 2 / Water hyacinth biomass carbon composite material was carbonized at 700°C for 3 hours under a protective a...

Embodiment 3

[0056] (1) Dissolve 0.2g of sodium molybdate in 60mL of deionized water, and stir at room temperature to form a colorless solution A;

[0057] (2) Disperse and dissolve 0.3 g of thioacetamide in solution A to form yellow solution B;

[0058] (3) Take 0.4g of peeled water hyacinth, cut it into blocks, and after alcohol treatment, put it in solution B and stir it, transfer it to the reaction kettle, react with water at 200°C for 36 hours, wash, and dry to obtain MoS 2 / water hyacinth biomass carbon composite material;

[0059] (4) Weigh 0.2g of dopamine hydrochloride, dissolve it in 60mL of deionized water to form a solution, and then add MoS 2 / water hyacinth biomass carbon composite material soaked in it, 80 ℃ water bath polymerization reaction for 18 hours, washed and dried;

[0060] (5) MoS polymerized with dopamine 2 / Water hyacinth biomass carbon composite material was carbonized at 800°C for 3 hours under a protective atmosphere to obtain carbon-coated molybdenum sul...

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Abstract

A carbon-coated molybdenum sulfide/water hyacinth biomass carbon composite material and a preparation method and use thereof comprise the following steps of: Including: the first step, using sodium molybdate and thioacetamide as raw materials, through a 160-200 DEGC hydrothermal method, growing a MoS2 nanosheet array on the surface of the bulbous water hyacinth biomass carbon; the second step, 80-100 DEG C water bath method is coated on the MoS2 nanosheet array with a layer of dopamine polymer; the third step is to carbonize the polymerized dopamine to form a carbon coating layer by calcination at 500 to 800 DEG C in an inert atmosphere to obtain carbon coated molybdenum sulfide. /Water hyacinth biomass carbon core shell composite. The invention has simple operation, large output and uniform coating layer . The invention has the advantages of simple operation, large output and uniform coating layer. The composite material has the advantages of low cost, high reversible charge-dischargecapacity, long cycle life and excellent rate performance when it is used as a sodium ion negative electrode material.

Description

technical field [0001] The invention relates to a negative electrode material of a sodium ion battery, in particular to a carbon-coated molybdenum sulfide / water hyacinth biomass-carbon composite material, a preparation method and an application thereof. Background technique [0002] With the massive development and utilization of energy to gain economic development, problems such as environmental pollution and energy shortage have become increasingly prominent. The development and utilization of clean and renewable energy is an urgent need for the development of today's society. At present, due to the advantages of high energy density, high power density, long cycle life and higher safety performance, lithium-ion secondary batteries are widely used in electronic products, electric vehicles and even in the field of aerospace. Environmentally friendly chemical energy storage power supply. However, limited lithium resources cannot satisfy people's huge demand for lithium-ion s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/36H01M4/58H01M4/583H01M4/62H01M10/054
CPCH01M4/366H01M4/5815H01M4/583H01M4/625H01M10/054Y02E60/10
Inventor 谢东程发良袁应东李宏高
Owner DONGGUAN UNIV OF TECH
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