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mos2 porous nanosheet/graphene electrochemical magnesium storage composite electrode and preparation method

A composite electrode, ene electrochemical technology, applied in the direction of battery electrodes, nanotechnology, nanotechnology, etc., to achieve the effect of enhancing the performance of electrochemical magnesium storage, increasing the contact area, and improving electrochemical performance

Inactive Publication Date: 2016-07-06
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] However, so far, with MoS 2 Electrochemical magnesium storage composite electrodes with porous nanosheets / graphene composite nanomaterials as electrochemically active substances and their preparation have not been reported yet

Method used

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  • mos2 porous nanosheet/graphene electrochemical magnesium storage composite electrode and preparation method
  • mos2 porous nanosheet/graphene electrochemical magnesium storage composite electrode and preparation method

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Embodiment 1

[0023] 1) Ultrasonic disperse 2.5mmol of graphene oxide in 60mL of deionized water, then add 0.12mmol of cationic pillar[5]arene supermolecule, and stir well, then add 0.76g (6.25mmol) of L-cysteine ​​and 0.3g (1.25mmol) sodium molybdate (Na 2 MoO 4 2H 2 O), and keep stirring to completely dissolve L-cysteine ​​and sodium molybdate, adjust the volume to about 80mL with deionized water;

[0024] 2) Transfer the obtained mixed solution to a 100mL hydrothermal reaction kettle, put the reaction kettle into a constant temperature oven, and after hydrothermal reaction at 240°C for 24 hours, let it cool down to room temperature naturally, and collect the solid product by centrifugation. And fully washed with deionized water, vacuum-dried at 100 °C, the obtained solid product was heat-treated at 800 °C for 2 h in a nitrogen / hydrogen mixed atmosphere, and the volume fraction of hydrogen in the mixed gas was 10%, and MoS was prepared. 2 Composite nanomaterials with hole nanosheets / gr...

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Abstract

The invention discloses a MoS2 perforated nanosheet / graphene electrochemical magnesium storage composite electrode and a preparation method. An electrochemical magnesium storage active substance of the composite electrode adopts a MoS2 perforated nanosheet / graphene composite nanomaterial, a substance ratio of MoS2 perforated nanosheets to graphene in the composite material is (1:1)-(1:3), a few layers of the MoS2 perforated nanosheets are provided, and the composite electrode comprises components in percentage by mass as follows: 80% of the MoS2 perforated nanosheet / graphene composite nanomaterial, 10% of acetylene black, 5% of carboxymethyl cellulose and 5%-10% of polyvinylidene fluoride. The preparation method comprises the steps as follows: the MoS2 perforated nanosheet / graphene composite nanomaterial is prepared firstly and is prepared into slurry with acetylene black, carboxymethyl cellulose and polyvinylidene fluoride, a current collector is uniformly coated with the slurry, and after the slurry is dried and rolled, the MoS2 perforated nanosheet / graphene electrochemical magnesium storage composite electrode is obtained. The electrochemical magnesium storage composite electrode has high reversible magnesium storage capacity, excellent cycle performance and enhanced magnification characteristic.

Description

technical field [0001] The invention relates to an electrochemical magnesium storage electrode and a preparation method thereof, in particular to MoS 2 The nanosheet / graphene electrochemical magnesium storage composite electrode with holes and a preparation method thereof belong to the technical field of new energy storage and conversion. Background technique [0002] With the development of modern mobile communications, new energy vehicles and smart grids, new chemical power sources play an increasingly important role in modern society. Traditional secondary batteries, such as lead-acid batteries, have limited applications due to the harmful metal element Pb they contain. Lithium-ion batteries have excellent properties such as high specific energy, no memory effect, and environmental friendliness, and have been widely used in portable mobile appliances such as mobile phones and notebook computers. As a power battery, lithium-ion batteries also have broad application prosp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/136H01M4/1397B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00H01M4/136H01M4/1397H01M4/366H01M4/5815H01M4/625Y02E60/10
Inventor 陈卫祥马琳黄国创王臻叶剑波
Owner ZHEJIANG UNIV
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