Method for preparing alkali type copper molybdate microsphere having surface nano-whisker structure

A technology of nano-whiskers and copper molybdate, which is applied in the direction of nanotechnology, nanotechnology, nanotechnology, etc. for materials and surface science, can solve the problems of unrealized industrial production, and achieve convenient and simple product processing and high control The effect of stability and product shape stability

Inactive Publication Date: 2015-06-10
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This type of supercapacitor has a very high energy density, except NiO x Other types are mostly in the research stage and have not yet achieved industrial production

Method used

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  • Method for preparing alkali type copper molybdate microsphere having surface nano-whisker structure
  • Method for preparing alkali type copper molybdate microsphere having surface nano-whisker structure
  • Method for preparing alkali type copper molybdate microsphere having surface nano-whisker structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Step 1: Weigh 0.0203g Na respectively 2 MoO 4 .2H 2 O was placed in a 20ml reaction flask labeled A, and then weighed 0.0261g Cu(NO 3 ) 2 .2H 2 O was placed in a 20ml reaction bottle labeled B, and 5ml of deionized water was added to sonicate until it dissolved into a transparent solution.

[0040] Step 2: Add the solution in B to A dropwise, and stir magnetically for 50 minutes at room temperature.

[0041] Step 3: Use NaOH and HNO 3 Adjust the pH of the mixed solution to 6, and sonicate for 5 minutes.

[0042] Step 4: Transfer the above mixed solution to a 15ml reaction kettle and keep it warm at 110°C for 12 hours.

[0043] Step 5: Cool naturally to room temperature, and wash the product several times with water and ethanol respectively.

[0044] figure 1 Obtain the SEM photograph of product under the multiple of 10um in the embodiment 1, as can be seen from the figure, the basic copper molybdate microsphere diameter is about 20um, and the nano whisker struc...

Embodiment 2

[0046] Step 1: Weigh 0.0112g Na respectively 2 MoO 4 .2H 2 O is placed in a 20ml reaction bottle labeled A, and then weighed 0.0121g Cu(Ac) 2 .2H 2 O was placed in a 20ml reaction bottle labeled B, and 5ml of deionized water was added to sonicate until it dissolved into a transparent solution.

[0047] Step 2: Add the solution in B to A dropwise, stir magnetically for 50 minutes at room temperature, and sonicate for 5 minutes.

[0048] Step 3: Transfer the above mixed solution to a 15ml reaction kettle and keep it warm at 110°C for 12 hours.

[0049] Step 4: Cool naturally to room temperature, and wash the product several times with water and ethanol respectively.

[0050] Figure 8 It is the SEM photo of the product obtained under the multiple of 10um in Example 2. The basic copper molybdate synthesized under this condition is a cocklebur-like structure with a diameter of 30um, and there are many and loose nano whiskers distributed on the surface.

Embodiment 3

[0052] Step 1: Weigh 0.3909g Na respectively 2 MoO 4 .2H 2 O, 0.1648g NaOH is placed in the 20ml reaction flask labeled A, and then weigh 0.0571g Cu(Ac) 2 .2H 2 O was placed in a 20ml reaction bottle labeled B, and 15ml of deionized water was added to it and sonicated until it was dissolved into a transparent solution.

[0053] Step 2: Add 5ml of the solution in B to 5ml of A dropwise, and control the reaction temperature to 35°C with a water bath, and turn on magnetic stirring.

[0054] Step 3: Adjust the pH of the mixture to 6 with acetic acid solution.

[0055] The fourth step: keep warm for three hours, and end the reaction.

[0056] Step 5: After cooling down to room temperature, wash twice with absolute ethanol and deionized water.

[0057] Figure 9 It is the SEM photograph of the product obtained under the multiple of 1um in embodiment 3. Figure 10 It is the SEM photograph of the product obtained under the multiple of 30um in embodiment 3. From Figure 9 , ...

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Abstract

The invention relates to a method for preparing an alkali type copper molybdate microsphere having a surface nano-whisker structure. The method comprises the following steps of: (1), dropwise adding copper salt solution into molybdate solution, wherein the mol ratio of copper salt to molybdate is 1:1; (2), adjusting the pH of a mixed system obtained in the step (1) to 6, transferring the mixed system into a reaction kettle, stirring magnetically and ultrasonically so that the mixed system is uniformly dispersed, and keeping the temperature at 50-110 DEG C for 1-12h; and (3), cooling to room temperature by the end of the reaction, and centrifuging, washing, drying and collecting a sample so as to obtain the alkali type copper molybdate microsphere having the surface nano-whisker structure. Compared with the prior art, the method disclosed by the invention is simple in process, universal in preparation condition, steady in product morphology, high in purity and simple in product treatment, and is applied to medium-scale industrial production.

Description

technical field [0001] The invention belongs to the technical field of inorganic nanometer materials, and in particular relates to a method for preparing basic copper molybdate microspheres with a surface nanometer whisker structure. Background technique [0002] Traditional supercapacitors mostly use carbon materials as electrodes. Carbon materials are very good supercapacitor materials due to their excellent conductivity and large surface area. However, carbon materials also have limitations. The capacitance of traditional carbon materials is not very high, which limits its further development. In contrast, transition metal oxides or hydroxides have higher pseudocapacitance. If their shortcomings such as poor conductivity can be overcome, it is expected to increase the use value of supercapacitors. [0003] Basic copper molybdate, also known as molybdenum copper ore. As a member of transition metal hydroxide, it has a very high pseudocapacitance, and its natural layered ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G39/00B82Y30/00
CPCC01G39/00B82Y30/00C01P2004/03C01P2004/04C01P2004/30C01P2004/61
Inventor 吴庆生韩勇
Owner TONGJI UNIV
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