Preparation method of three-dimensional self-assembled flower-like tungsten disulfide electrode material

A technology of tungsten disulfide and electrode materials, applied in chemical instruments and methods, tungsten compounds, inorganic chemistry, etc., can solve problems such as structural damage, electrochemical performance attenuation, large volume expansion, etc., achieve good crystallinity, facilitate transmission, The effect of structural stability
CN109264784AActive Publication Date: 2019-01-25SHAANXI UNIV OF SCI & TECH
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Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
SHAANXI UNIV OF SCI & TECH
Publication Date
2019-01-25

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Abstract

A preparation method of a three-dimensional self-assembled flower-like tungsten disulfide electrode material comprises the steps that sodium tungstate dihydrate is added into a mixed solution of deionized water and ethanol, stirring is performed till the sodium tungstate dihydrate is dissolved to form a transparent solution A, then ammonium acetate is added and stirred evenly, then oleic acid is added and mixed evenly, a pH value is regulated to 1.3 to 1.7, hydrothermal reaction is performed at the temperature of 160-180 DEG C for 12-24 hours, centrifugation and drying are performed to obtainWO3.0.33H2O powder; WO3.0.33H2O powder and thioacetamide are mixed according to the mole ratio of 1:20, and then calcination is performed to obtain the three-dimensional self-assembled flower-like tungsten disulfide electrode material. The hydrothermal synthesis method is utilized to add the oleic acid and ammonium acetate in the mixed alcohol water system to control the nucleation growth of tungsten trioxide and to control the morphology, the synthesis method is simple, easy to control and good in product dispersivity, and finally the three-dimensional self-assembled flower-like tungsten disulfide electrode material is obtained through vulcanization, is uniform in morphology and high in purity and has better application in the field of electrochemistry.
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Description

technical field

[0001] The present invention relates to WS 2 The technical field of nanomaterial preparation, in particular to a method for preparing a three-dimensional self-assembled flower-shaped tungsten disulfide electrode material. Background technique

[0002] WS 2 The microscopic structure of the crystal is a lamellar structure, which belongs to the hexagonal crystal system, forming a S-W-S sandwich structure, and the adjacent sheets are combined by Van der Waals force. This weak bonding force is easy to be cut between layers, and different atoms The interlayer is combined by covalent bond, and the interlayer distance is large Makes it easy to slip between layers.

[0003] Thanks to Nano WS 2 Good physical and chemical properties, broad application prospects, nano WS at home and abroad 2 Preparation has also been extensively studied. Common preparation methods include: hydrothermal method, chemical vapor deposition method, high energy ball milling method, etc....

Claims

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