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A microspherical cus-mos 2 Preparation method of composite material

A composite material and microsphere technology, applied in the manufacture of hybrid/electric double layer capacitors, hybrid capacitor electrodes, molybdenum sulfide, etc., can solve the problems of high cost and complicated experiments, and achieve improved performance, improved electrochemical performance, and good application. Effects of value and research significance

Active Publication Date: 2021-09-03
NORTHWEST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Hollow cubic CuS@MoS 2 is through Cu 2 O and MoS 2 Precipitation of 2D MoS 2 Nanosheets aggregated on Cu 2 The surface of the O template, and finally, the hollow CuS@MoS promoted by heat treatment 2 Generation of microcubes (Zhou H., Lv Z.L., Liu H., et al. Self-assembled hierarchical hollow CuS@MoS 2 microcubes with superior lithium storage. Electrochimica Acta 250(2017) 376–383), this method is more complicated and expensive

Method used

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  • A microspherical cus-mos <sub>2</sub> Preparation method of composite material
  • A microspherical cus-mos <sub>2</sub> Preparation method of composite material
  • A microspherical cus-mos <sub>2</sub> Preparation method of composite material

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Experimental program
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Effect test

Embodiment 1

[0025] A Microspherical CuS-MoS 2 The preparation method of composite material, comprises the following steps:

[0026] S1, CuO-Cu 2 Preparation of O composites:

[0027]Add 1.930g of copper nitrate trihydrate to 48mL of deionized water, then add 16mL of 2M ethanolamine, stir for 15min, then move the evenly stirred solution into a 50mL stainless steel autoclave, heat to 180°C, and keep for 12h . Then, the prepared composite material was centrifuged and washed 5 times with deionized water, and placed in a vacuum drying oven at 80°C for 12 hours to prepare CuO-Cu 2 O sacrificial template;

[0028] S2, CuS-MoS 2 Preparation of composite materials:

[0029] The prepared CuO-Cu 2 The O composite was dissolved in 55 mL of deionized water and ultrasonically cleaned for 5 min. Get 77.5mg of sodium molybdate (Na 2 MoO 4 ) and 121.5mg of thiourea (H 2 NCSNH 2 ) was dissolved in 50mL deionized water, placed in a magnetic stirrer and stirred for 10min, and then the CuO-Cu that...

Embodiment 2

[0035] A Microspherical CuS-MoS 2 The preparation method of composite material, comprises the following steps:

[0036] S1, CuO-Cu 2 Preparation of O composites:

[0037] Add 1.930g of copper nitrate trihydrate to 48mL of deionized water, then add 16mL of 2M ethanolamine, stir for 15min, then move the evenly stirred solution into a 50mL stainless steel autoclave, heat to 180°C, and keep for 12h . Then, the prepared composite material was centrifuged and washed 5 times with deionized water, and placed in a vacuum drying oven at 80°C for 12 hours to prepare CuO-Cu 2 O sacrificial template;

[0038] S2, CuS-MoS 2 Preparation of composite materials:

[0039] The prepared CuO-Cu 2 The O composite was dissolved in 55 mL of deionized water and ultrasonically cleaned for 5 min. Get 77.5mg of sodium molybdate (Na 2 MoO 4 ) and 109.5mg of thiourea (H 2 NCSNH 2 ) was dissolved in 50mL deionized water, placed in a magnetic stirrer and stirred for 10min, and then the CuO-Cu tha...

Embodiment 3

[0041] A Microspherical CuS-MoS 2 The preparation method of composite material, comprises the following steps:

[0042] S1, CuO-Cu 2 Preparation of O composites:

[0043] Add 1.930g of copper nitrate trihydrate to 48mL of deionized water, then add 16mL of 2M ethanolamine, stir for 15min, then move the evenly stirred solution into a 50mL stainless steel autoclave, heat to 180°C, and keep for 12h . Then, the prepared composite material was centrifuged and washed 5 times with deionized water, and placed in a vacuum drying oven at 80°C for 12 hours in vacuum to prepare a cupric oxide-cuprous oxide sacrificial template;

[0044] S2, CuS-MoS 2 Preparation of composite materials:

[0045] The prepared CuO-Cu 2 The O composite was dissolved in 55 mL of deionized water and ultrasonically cleaned for 5 min. Get 77.5mg of sodium molybdate (Na 2 MoO 4 ) and 134.1mg of thiourea (H 2 NCSNH 2 ) was dissolved in 50mL deionized water, placed in a magnetic stirrer and stirred for 10m...

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Abstract

The invention belongs to the technical field of supercapacitors, and specifically discloses a microspherical CuS-MoS 2 The preparation method of the composite material comprises the following steps: after mixing the aqueous solution of copper nitrate trihydrate and the aqueous solution of ethanolamine, performing a pyrolysis reaction to obtain CuO-Cu 2 O composites; the CuO‑Cu 2 O composite material is dissolved in water; Sodium molybdate and thiourea are dissolved in water to obtain a mixed solution; CuO‑Cu 2 The aqueous solution of the O composite material is added to the mixed solution for hydrothermal reaction, and the obtained precipitates are washed and dried in sequence to obtain the CuS-MoS 2 composite material. Microspherical CuS-MoS provided by the present invention 2 The preparation method of the composite material adopts a simple hydrothermal method to CuO‑Cu 2 O composite microspheres were used as sacrificial templates, and MoS was prepared by the sacrificial template method while vulcanizing the microspheres. 2 , to get CuS‑MoS 2 microspheres, and the method has low cost and simple process.

Description

technical field [0001] The invention belongs to the technical field of supercapacitors, and specifically discloses a microspherical CuS-MoS 2 Methods of preparation of composite materials. Background technique [0002] Among transition metal sulfides, molybdenum disulfide (MoS 2 ) is a typical two-dimensional nanomaterial, which has excellent mechanical properties, large specific surface area and high theoretical specific capacitance, and is an ideal supercapacitor electrode material, but MoS 2 Its further development is limited by its poor electrical conductivity. Copper sulfide (CuS) is one of the very promising electrode material candidates, which is not only cheap and abundant in material sources, but also has a high theoretical specific capacity (560mAh g -1 ) and excellent electrical conductivity (10 -3 S cm -1 ), has been widely used in chemical sensors, solar cells, and lithium-ion batteries. Therefore, combining CuS with MoS 2 Composite, using the synergistic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G39/06C01G3/12H01G11/24H01G11/30H01G11/86
CPCC01G3/12C01G39/06C01P2004/03C01P2004/32C01P2004/61C01P2004/82C01P2006/40H01G11/24H01G11/30H01G11/86Y02E60/13
Inventor 朱秀红琚鑫郭立松邢宏娜冯伟冯娟宗妍李兴华郑新亮
Owner NORTHWEST UNIV