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Preparation method of WS2 nano-material with macroporous network structure

A technology of network structure and nanomaterials, applied in the manufacture of hybrid/electric double layer capacitors, hybrid capacitor electrodes, etc., can solve the problems of limited energy storage performance, limited contact area between carbon materials and electrolyte, and achieve simple and effective preparation methods , Conducive to transmission, the effect of large specific surface area

Inactive Publication Date: 2018-05-15
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Electric double layer capacitors have the advantages of low price and high electrochemical stability, but due to the limited contact area between the carbon material and the electrolyte, the improvement of its energy storage performance is limited; the other is pseudocapacitors (PCs), a typical pseudocapacitor Capacitor materials are metal oxides (MnO 2 、 Co 3 o 4 , NiO, V 2 o 5 ) and conductive polymer

Method used

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  • Preparation method of WS2 nano-material with macroporous network structure
  • Preparation method of WS2 nano-material with macroporous network structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] This embodiment includes the following steps:

[0019] Step 1, powder mixing

[0020] Weigh 1.1897g tungsten hexachloride (WCl 6 ), 2.2767g thioacetamide (CH 3 CSNH 2 ), added to a beaker with 70ml of deionized water, and magnetically stirred at room temperature for 1h to completely mix the powder materials;

[0021] Step 2, hydrothermal reaction

[0022] Transfer the solution obtained in step 1 into a 100ml hydrothermal kettle, and put a 1*2cm carbon cloth, heat it at 265°C, and keep it warm for 24 hours; after the reaction, wash the carbon cloth with absolute ethanol and deionized water respectively 3 times, then vacuum-dried at 60°C and kept for 12 hours. Get WS 2 -carbon paper nanomaterials. Such as figure 1 (a) shows that a uniform macroporous network of WS grows on the surface of nickel foam 2 nanomaterials. From the enlarged pictures of (b)-(d), the macroporous network structure can be clearly seen, and the morphology is complete and evenly distributed....

Embodiment 2

[0026] This embodiment includes the following steps:

[0027] Step 1, powder mixing

[0028] Weigh 1.1897g tungsten hexachloride (WCl 6 ), 1.13835g thioacetamide (CH 3 CSNH 2 ), added to a beaker with 70ml of deionized water, and magnetically stirred at room temperature for 1h to completely mix the powder materials;

[0029] Step 2, hydrothermal reaction

[0030] Transfer the solution obtained in step 1 into a 100ml hydrothermal kettle, and put a 1*2cm carbon cloth, heat it at 265°C, and keep it warm for 24 hours; after the reaction, wash the carbon cloth with absolute ethanol and deionized water respectively 3 times, then vacuum-dried at 60°C and kept for 12 hours to obtain WS 2 -carbon paper nanomaterials.

[0031] The carbon cloth obtained in this example is directly used as the working electrode of the three-electrode system, the pt electrode is the counter electrode, the SCE is the reference electrode, and the 1M H 2 SO 4 As the electrolyte, the electrochemical wo...

Embodiment 3

[0033] This embodiment includes the following steps:

[0034] Step 1, powder mixing

[0035] Weigh 1.1897g tungsten hexachloride (WCl 6 ), 2.2767g thioacetamide (CH 3 CSNH 2 ), added to a beaker with 70ml of deionized water, and magnetically stirred at room temperature for 1h to completely mix the powder materials;

[0036] Step 2, hydrothermal reaction

[0037] Transfer the solution obtained in step 1 into a 100ml hydrothermal kettle, and put a 1*2cm carbon cloth, heat it at 200°C, and keep it warm for 24 hours; after the reaction, wash the carbon cloth with absolute ethanol and deionized water respectively 3 times, then vacuum-dried at 60°C and kept for 12 hours to obtain WS 2 -carbon paper nanomaterials.

[0038] The carbon cloth obtained in this example is directly used as the working electrode of the three-electrode system, the pt electrode is the counter electrode, the SCE is the reference electrode, and the 1M H 2 SO 4 As the electrolyte, the electrochemical wor...

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Abstract

The invention provides a preparation method of a WS2 nano-material with a macroporous network structure. The preparation method comprises the steps that two kinds of powder of tungsten hexachloride (WCl6) and thioacetamide (CH3CSNH2) are weighed, are added into deionized water, and are stirred magnetically at room temperature for 1 hour, so that the powder raw materials are completely mixed; the powder is transfer into a 100ml water-heated kettle, is placed into 1*2cm carbon cloth, and is heat-preserved for 24 hours at different temperatures; after the reaction, the carbon cloth is washed 3 times with absolute ethyl alcohol and deionized water; vacuum drying is carried out at 60 DEG C; and heat preservation is carried out for 12 hours to acquire the WS2-carbon paper nano-material. According to the invention, the preparation method has the advantages of simple preparation process, controllable process, low cost, uniform distribution of WS2 with macroporous network structure, large specific surface area, good electrical conductivity, good photocatalysis performance, good biophile performance and the like, and is applicable to photocatalysis, wastewater treatment, lithium-ion batteries, biosensors and other fields.

Description

technical field [0001] The invention belongs to the technical field of preparation of supercapacitor electrode materials, in particular to a WS with a macroporous network structure. 2 Methods of preparing nanomaterials. Background technique [0002] With the rapid development of the global economy, the consumption of fuel cells, and the extreme increase in environmental pollution, there is an urgent need for efficient, clean, and sustainable energy storage devices. The most efficient and practical energy storage devices in many application areas are batteries, fuel cells and electrochemical capacitors. Among them, electrochemical capacitors (ECs), also commonly referred to as supercapacitors (SCs). Compared with traditional batteries, supercapacitors have the advantages of high safety, simple assembly, high power performance, good reversibility, long cycle life (>1 million times), simple operation, easy integration into electronic products, and thermochemical thermal T...

Claims

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Application Information

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IPC IPC(8): H01G11/86H01G11/26H01G11/30
CPCY02E60/13H01G11/86H01G11/26H01G11/30
Inventor 武文玲陈帅兵牛冬娟朱建锋秦毅王芬
Owner SHAANXI UNIV OF SCI & TECH
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