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Multi-edge MoS2 nano piece/graphene electrochemical magnesium storage composite electrode and preparation method thereof

A composite electrode, ene electrochemical technology, applied in battery electrodes, nanotechnology, nanotechnology, etc.

Inactive Publication Date: 2014-10-08
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 multi-edge MoS 2 Nanosheet / graphene composite nanomaterials as electrochemically active materials for electrochemical magnesium storage composite electrodes and their preparation have not been reported yet

Method used

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  • Multi-edge MoS2 nano piece/graphene electrochemical magnesium storage composite electrode and preparation method thereof
  • Multi-edge MoS2 nano piece/graphene electrochemical magnesium storage composite electrode and preparation method thereof
  • Multi-edge MoS2 nano piece/graphene electrochemical magnesium storage composite electrode and preparation method thereof

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Embodiment 1

[0026] 1) Ultrasonic disperse 2.5mmol graphene oxide in 60mL deionized water, add 0.4mL ionic liquid 1-butyl-3-methylimidazolium tetrafluoroborate (see figure 1 Schematic diagram), and fully stirred, and then sequentially added 0.76g (6.25mmol) 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;

[0027] 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 hydrothermal solid product was heat-treated at 500 ° C for 2 h in a nitrogen / hydrogen mixed atmosphere, and the volume fraction of hydrogen in the mixed gas was 10%, ...

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Abstract

The invention discloses a multi-edge MoS2 nano piece / graphene electrochemical magnesium storage composite electrode and a preparation method thereof, wherein an electrochemical magnesium storage active substance is a composite nanomaterial of few layers of multi-edge MoS2 nano pieces and graphene; the ratio of the amount of substance of MoS2 to the graphene in the composite nanomaterial is 1 to 2; the composite electrode comprises the following components by weight percent: 80% of the multi-edge MoS2 nano piece / graphene composite nanomaterial, 10% of acetylene black, 5% of carboxymethyl cellulose and 5% of polyvinylidene fluoride. The preparation method comprises the steps of firstly, preparing the multi-edge MoS2 nano piece / graphene composite nanomaterial, mixing the obtained composite nanomaterial with the acetylene black and the polyvinylidene fluoride to prepare even paste, evenly coating foamy copper taken as a current collector with the paste, drying, and rolling to obtain the electrochemical magnesium storage composite electrode. The electrochemical magnesium storage composite electrode has the high electrochemical magnesium storage capacity.

Description

technical field [0001] The invention relates to an electrochemical magnesium storage electrode and a preparation method thereof, in particular to a multi-edge MoS 2 The invention discloses a graphene electrochemical magnesium storage composite electrode and a preparation method thereof, belonging to the technical field of new energy materials, 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 batteri...

Claims

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Application Information

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IPC IPC(8): H01M4/136H01M4/1397B82Y30/00B82Y40/00
CPCY02E60/122B82Y30/00B82Y40/00H01M4/136H01M4/1397H01M4/366H01M4/5815H01M4/625Y02E60/10
Inventor 陈卫祥马琳叶剑波王臻
Owner ZHEJIANG UNIV
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