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A preparation method of molybdenum disulfide microcapsules, positive electrode of magnesium ion battery, magnesium ion battery

A magnesium ion battery, molybdenum disulfide technology, applied in the direction of molybdenum sulfide, battery electrodes, secondary batteries, etc., can solve the problems of poor conductivity and low loading of microcapsules, achieve high reproducibility, improve conductivity, and improve The effect of cycle capacity

Active Publication Date: 2022-04-12
ANHUI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The present invention targets MoS 2 Microcapsules have poor electrical conductivity and low loading capacity, providing a simple and reliable experimental device, uniform particle size, good reproducibility, and real-time control of the capsule material preparation method. high performance

Method used

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  • A preparation method of molybdenum disulfide microcapsules, positive electrode of magnesium ion battery, magnesium ion battery
  • A preparation method of molybdenum disulfide microcapsules, positive electrode of magnesium ion battery, magnesium ion battery
  • A preparation method of molybdenum disulfide microcapsules, positive electrode of magnesium ion battery, magnesium ion battery

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Experimental program
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Effect test

Embodiment 1

[0056] A preparation method for molybdenum disulfide microcapsules, comprising the following steps:

[0057] (1) Hydrothermal process: Weigh 0.9g of ammonium molybdate tetrahydrate and 1.0g of thioacetamide dissolved in 30mL of deionized water, then add 0.5g of polyethylene glycol 750 monomethyl ether to the above solution, and continue to stir for 1h Then transfer to a 50mL polytetrafluoroethylene reactor and put it into an oven at 160°C for 24h. Naturally cooled to room temperature, deionized H 2 O was washed several times by centrifugation, and the precipitated product was collected. Its SEM picture is as follows figure 1 As shown, it can be seen from the figure that it is a nanosphere self-assembled by nanosheets, with a size of 500nm. Take 200mg of the product and ultrasonically disperse it in 10mL of 2wt% polyvinyl alcohol aqueous solution to obtain MoS with a concentration of 20mg / mL 2 solution.

[0058] (2) 0.2g photoinitiator 2-hydroxyl-2-methylpropiophenone is m...

Embodiment 2

[0062] A preparation method for molybdenum disulfide microcapsules, comprising the following steps:

[0063] (1) Hydrothermal process: Weigh 0.8g of ammonium molybdate tetrahydrate and 0.7g of thioacetamide and dissolve them in 30mL of deionized water, then add 0.5g of polyethylene glycol 750 monomethyl ether to the above solution, and continue stirring for 1h Then transfer to a 50mL polytetrafluoroethylene reactor and put it into an oven at 160°C for 24h. Naturally cooled to room temperature, deionized H 2 O was washed several times by centrifugation, and the precipitated product was collected. Take 200mg of the product and ultrasonically disperse it in 10mL of 2wt% polyvinyl alcohol aqueous solution to obtain MoS with a concentration of 20mg / mL 2 solution;

[0064] (2) Mix 0.4g photoinitiator 2-hydroxyl-2-methylpropiophenone with 20g organic photocurable material ETPTA to obtain a mixed solution A with a photoinitiator content of 2%;

[0065] (3) Using liquid flooding co...

Embodiment 3

[0068] A preparation method for molybdenum disulfide microcapsules, comprising the following steps:

[0069] (1) Hydrothermal process: Weigh 0.8g of ammonium molybdate tetrahydrate and 0.7g of thioacetamide and dissolve them in 30mL of deionized water, then add 0.5g of polyethylene glycol 750 monomethyl ether to the above solution, and continue stirring for 1h Then transfer to a 50mL polytetrafluoroethylene reactor and put it into an oven at 160°C for 24h. Naturally cooled to room temperature, deionized H 2 O was washed several times by centrifugation, and the precipitated product was collected. Take 800mg of the product and ultrasonically disperse it in 10mL of 2wt% polyvinyl alcohol aqueous solution to obtain MoS with a concentration of 80mg / mL 2 solution;

[0070] (2) 0.6g photoinitiator 2-hydroxyl-2-methylpropiophenone is mixed with 20g organic photocurable material ETPTA to obtain a mixed solution A in which the quality of photoinitiator is 3% of the organic photocurab...

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Abstract

The invention discloses a preparation method of molybdenum disulfide microcapsules, a positive electrode of a magnesium ion battery, and a magnesium ion battery. Firstly, MoS is obtained by a hydrothermal method 2 nanospheres, and then the MoS 2 The nanospheres are encapsulated into the capsule, and after carbonization treatment, the electrode material with good conductivity and high coating rate is obtained, which solves the problem of low load and poor controllability of the capsule material. It is applied to the positive electrode of magnesium ion battery and has a high discharge capacity. , with long-term cycle stability.

Description

technical field [0001] The invention relates to the technical field of energy storage materials, in particular to a preparation method of molybdenum disulfide microcapsules, a positive electrode of a magnesium ion battery, and a magnesium ion battery. [0002] technical background [0003] The growing energy demand has stimulated the extensive development of advanced energy storage devices. As a major energy carrier, lithium-ion batteries are widely used in daily life and modern industry. However, the shortage of lithium resources and the inherent safety issues caused by the formation of metallic lithium dendrites during battery operation hinder the sustainable development of lithium batteries. Therefore, more and more researchers have turned their attention to developing other rechargeable metal-ion batteries. [0004] In recent years, people have shown great interest in Mg-ion batteries, which have a large theoretical specific capacity (2205mAh g -1 ), high negative pote...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G39/06C01B32/05H01M4/36H01M4/58H01M4/62H01M10/054
CPCC01G39/06C01B32/05H01M4/362H01M4/5815H01M4/625H01M10/054H01M2004/028C01P2004/03C01P2002/72C01P2004/61Y02E60/10
Inventor 刘金云林夕蓉曾祥兵朱红杨在喜司廷李金金
Owner ANHUI NORMAL UNIV
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