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mo0.5w0.5s2 nanowatt/graphene electrochemical sodium 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 strong hydrophobicity and strong electrostatic interaction

Inactive Publication Date: 2016-05-25
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] However, so far, with Mo 0.5 W 0.5 S 2 Nanowatt / graphene composite nanomaterials as electrochemically active materials for electrochemical sodium storage composite electrodes and their preparation have not been reported yet

Method used

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  • mo0.5w0.5s2 nanowatt/graphene electrochemical sodium storage composite electrode and preparation method
  • mo0.5w0.5s2 nanowatt/graphene electrochemical sodium storage composite electrode and preparation method
  • mo0.5w0.5s2 nanowatt/graphene electrochemical sodium storage composite electrode and preparation method

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Embodiment 1

[0024] 1) Ultrasonic disperse 2.5mmol graphene oxide in 60mL deionized water, then add 0.8mmol gemini surfactant N-dodecylpropylenediamine diammonium bromide, and stir well, then add 0.76g ( 6.25mmol) L-cysteine, 0.625mmol ammonium thiomolybdate and 0.625mmol ammonium thiotungstate, and keep stirring to completely dissolve L-cysteine, ammonium thiomolybdate and ammonium thiotungstate , adjust the volume to about 80mL with deionized water;

[0025] 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 230°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 Mo was prepared....

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Abstract

The invention discloses a Mo0.5W0.5S2 nano-tile / graphene electrochemical sodium storage composite electrode and a preparation method thereof, wherein an electrochemical sodium storage active substance is a Mo0.5W0.5S2 nano-tile and graphene composite nanomaterial; the ratio of the amount of substance of Mo0.5W0.5S2 nano-tile to graphene in the composite nanomaterial is 1: 2; the Mo0.5W0.5S2 nano-tile has few layers and averagely has 3-5 layers; the composite electrode comprises the following components by weight percent: 80% of the Mo0.5W0.5S2 nano-tile / graphene composite nanomaterial, 10% of conductive acetylene black, 5% of carboxymethyl cellulose and 5% of polyvinylidene fluoride. The preparation method comprises the steps of firstly, preparing the Mo0.5W0.5S2 nano-tile / graphene composite nanomaterial, mixing the obtained composite nanomaterial with the acetylene black and the polyvinylidene fluoride to prepare paste, coating a copper foil with the paste, and rolling to obtain the electrochemical sodium storage composite electrode. The electrochemical sodium storage composite electrode has the high electrochemical sodium storage capacity.

Description

technical field [0001] The present invention relates to electrochemical sodium storage electrode and preparation method thereof, relate in particular to using Mo 0.5 W 0.5 S 2 The invention relates to a preparation method for preparing an electrochemical sodium storage composite electrode by a nanowatt / graphene composite nanomaterial, which belongs to the technical fields of inorganic composite nanomaterials and new energy. 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 noteboo...

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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