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A kind of preparation method of binary cobalt nickel oxide powder

A technology of oxide powder and binary cobalt-nickel, which is applied in the manufacture of nickel oxide/nickel hydroxide, hybrid/electric double layer capacitors, hybrid capacitor electrodes, etc. It can solve the problems of low preparation efficiency, long preparation time, and cumbersome steps. , to achieve the effect of fast synthesis speed, low production cost and simple process

Active Publication Date: 2019-01-22
SHANDONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these synthesis methods need to prepare the precursor of binary cobalt-nickel oxide first, and then add it in the muffle furnace to convert the precursor into binary cobalt-nickel oxide powder. The steps are more complicated, the preparation time is longer, and the preparation efficiency is lower. Low

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  • A kind of preparation method of binary cobalt nickel oxide powder
  • A kind of preparation method of binary cobalt nickel oxide powder

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Effect test

Embodiment 1

[0043] A preparation method of binary cobalt-nickel oxide powder, the steps are as follows:

[0044] (1) Weigh 0.3g nickel chloride (NiCl 2 ·6H 2 O), 0.6g cobalt chloride (CoCl 2 ·6H 2 O), 0.8g sodium acetate (CH 3 COONa) was added to water to form a 40 mL pink transparent solution.

[0045] (2) Add 10 mL of hydrogen peroxide with a mass fraction of 20% dropwise to the pink solution in step (1), and then sonicate for 30 min.

[0046] (3) Pour the ultrasonicated solution in step (2) into a 100 mL hydrothermal reaction kettle, heat to 180° C., and keep it warm for 4 hours.

[0047] (4) Filter and dry the sample after the reaction in step (3) for 6 hours to obtain Co 1.29 Ni 1.71 o 4 Powder.

[0048] For the obtained Co 1.29 Ni 1.71 o 4 The XRD characterization results of the powder are as follows: figure 1 As shown, it is proved that the synthesized substance has Co 1.29 Ni 1.71 o 4 The structure of the powder.

[0049] Detection of Co by transmission electron m...

Embodiment 2

[0052] A preparation method of binary cobalt-nickel oxide powder, the steps are as follows:

[0053] (1) Weigh 0.3g nickel chloride (NiCl 2 ·6H 2 O), 0.3g cobalt chloride (CoCl 2 ·6H 2 O), 0.6g sodium acetate (CH 3 COONa) was added to water to form a 40 mL pink transparent solution.

[0054] (2) Add 10 mL of hydrogen peroxide with a mass fraction of 20% dropwise to the pink solution in step (1), and then sonicate for 30 min.

[0055] (3) Pour the ultrasonicated solution in step (2) into a 100 mL hydrothermal reaction kettle, heat to 180° C., and keep the temperature for 8 hours.

[0056] (4) Filter and dry the sample reacted in step (3) for 8 hours to obtain Co 1.29 Ni 1.71 o 4 Powder.

Embodiment 3

[0058] A preparation method of binary cobalt-nickel oxide powder, the steps are as follows:

[0059] (1) Weigh 0.3g nickel chloride (NiCl 2 ·6H 2 O), 0.6g cobalt chloride (CoCl 2 ·6H 2 O), 0.8g sodium acetate (CH 3 COONa) was added to water to form a 40 mL pink transparent solution.

[0060] (2) Add 10 mL of hydrogen peroxide with a mass fraction of 20% dropwise to the pink solution in step (1), and then sonicate for 30 min.

[0061] (3) Pour the ultrasonicated solution in step (2) into a 100 mL hydrothermal reaction kettle, heat to 200° C., and keep it warm for 4 hours.

[0062] (4) Filter and dry the sample reacted in step (3) for 10 hours to obtain Co 1.29 Ni 1.71 o 4 Powder.

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Abstract

The invention discloses a preparation method of binary cobalt nickel oxide powder. A nickel salt, a cobalt salt and an alkali sodium salt are prepared into a mixed saline solution; next, an aqueous hydrogen peroxide solution is dropwise added to the mixed saline solution, and then ultrasonic processing is performed to obtain a mixed solution; and next, the mixed solution is subjected to a hydrothermal reaction, and the precipitates obtained after the hydrothermal reaction are purified to obtain Co<1.29>Ni<1.71>O<4> powder. By adoption of the hydrothermal reaction, the Co<1.29>Ni<1.71>O<4> powder can be obtained in one step, without requiring calcining; and meanwhile, simple process, high syntheses speed, uniform granularity of the synthesized powder and relatively high specific capacitance can be realized.

Description

technical field [0001] The invention belongs to the technical field of new materials, and in particular relates to a method for preparing binary cobalt-nickel oxide powder used for supercapacitor electrode materials. Background technique [0002] In recent years, due to the rapid expansion of the population, the rapid development of the economy, and the depletion of traditional non-renewable energy sources such as oil and natural gas, the existing traditional energy systems are increasingly unable to meet the needs of modern industry, agriculture, and economic development. How to Solving the phenomenon of energy depletion is one of the huge problems that mankind is currently facing. At the same time, the burning of petrochemical energy will cause a series of environmental problems such as the greenhouse effect and environmental degradation, which makes scientific researchers turn their focus to green and renewable new energy sources. Therefore, the development of sustainable...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G11/46H01G11/86H01G11/24C01G53/04
CPCY02E60/13
Inventor 毕见强赵庆强王伟礼郝旭霞高希成孙晓宁孙国勋李晓辉
Owner SHANDONG UNIV