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Preparation method of ribbon type graded mesoporous nickel oxide high-specific-capacitance electrode material

A technology for high specific capacitance and electrode materials, which is applied in the preparation of nickel oxide electrode materials and the preparation of ribbon-shaped graded mesoporous nickel oxide high specific capacitance electrode materials. problem, to achieve the effect of simple process, low cost, and reduced diffusion path

Inactive Publication Date: 2014-11-12
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

"High specific capacitance NiO electrode material and preparation method" (Chinese invention patent, application number: 201110403800.4), "a method for preparing cubic or rod-shaped NiO with nanoporous structure by microemulsion method" (Chinese invention patent, application number : 201110175362.0), "Preparation method of NiO nano flower-like microspheres with controllable surface morphology" (Chinese invention patent, application number: 201110108760.0), etc., but these methods also have many shortcomings, such as the need to add surfactants or Different reaction solvents are used, the preparation and processing costs are high, the process is complicated, and the amount control is difficult, etc.

Method used

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  • Preparation method of ribbon type graded mesoporous nickel oxide high-specific-capacitance electrode material
  • Preparation method of ribbon type graded mesoporous nickel oxide high-specific-capacitance electrode material
  • Preparation method of ribbon type graded mesoporous nickel oxide high-specific-capacitance electrode material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] In this example, nickel sulfate, guanidine hydrochloride and sodium chloride were used as raw materials, and mesoporous carbon was used as a template to prepare a ribbon-shaped graded mesoporous nickel oxide high specific capacitance electrode material through the template method. The specific steps are as follows:

[0029] (1) The preparation of nickel sulfate solution: be nickel sulfate according to the mass ratio of each substance: sodium chloride: water=0.0016: 0.00036: 1, be mixed with mixed solution, stir 30min, prepare the nickel sulfate solution containing sodium chloride;

[0030] (2) Preparation of guanidine hydrochloride solution: according to the mass ratio of each substance, it is guanidine hydrochloride: water=0.0024: 1, mixed into a mixed solution, stirred for 30min, and prepared into guanidine hydrochloride solution;

[0031] (3) Preparation of nickel hydroxide precursor and mesoporous carbon composite: Slowly add the guanidine hydrochloride solution prep...

Embodiment 2

[0041] In this example, nickel sulfate, guanidine hydrochloride and sodium chloride were used as raw materials, and mesoporous carbon was used as a template to prepare a ribbon-shaped graded mesoporous nickel oxide high specific capacitance electrode material through the template method. The specific steps are as follows:

[0042] (1) The preparation of nickel sulfate solution: be nickel sulfate according to the mass ratio of each substance: sodium chloride: water=0.0033: 0.00073: 1, be mixed with mixed solution, stir 30min, prepare the nickel sulfate solution containing sodium chloride;

[0043] (2) Preparation of guanidine hydrochloride solution: according to the mass ratio of each substance, it is guanidine hydrochloride: water=0.0048: 1, mixed into a mixed solution, stirred for 30min, and prepared into guanidine hydrochloride solution;

[0044] (3) Preparation of nickel hydroxide precursor and mesoporous carbon composite: Slowly add the guanidine hydrochloride solution prep...

Embodiment 3

[0048] In this example, nickel sulfate, guanidine hydrochloride and sodium chloride were used as raw materials, and mesoporous carbon was used as a template to prepare a ribbon-shaped graded mesoporous nickel oxide high specific capacitance electrode material through the template method. The specific steps are as follows:

[0049] (1) The preparation of nickel sulfate solution: be nickel sulfate according to the mass ratio of each substance: sodium chloride: water=0.0066: 0.0015: 1, be mixed with mixed solution, stir 30min, prepare the nickel sulfate solution containing sodium chloride;

[0050] (2) Preparation of guanidine hydrochloride solution: according to the mass ratio of each substance, it is guanidine hydrochloride: water=0.0096: 1, mixed into a mixed solution, stirred for 30min, and prepared into guanidine hydrochloride solution;

[0051] (3) Preparation of nickel hydroxide precursor and mesoporous carbon composite: Slowly add the guanidine hydrochloride solution prepa...

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Abstract

The invention relates to a preparation method of a ribbon type graded mesoporous nickel oxide high-specific-capacitance electrode material. The preparation method comprises the steps that nickel sulfate, guanidine hydrochloride and sodium chloride are used as raw materials, mesoporous carbon is used as a template, and then the ribbon type graded mesoporous nickel oxide high-specific-capacitance electrode material is prepared through a template method. Compared with the prior art, the preparation method has the advantages that the mesoporous carbon is used as the template, the guanidine hydrochloride is used as precipitating agents firstly without adding any surface active agents, and deionized water is adopted as a reaction solvent; the raw materials are cheap, and the ribbon type graded mesoporous nickel oxide high-specific-capacitance electrode material is nontoxic, harmless, simple in technological process, controllable in particle morphology, free from complex postprocessing processes and low in cost, and has good application prospect.

Description

technical field [0001] The invention belongs to the technical field of new energy storage materials, and relates to a preparation method of a nickel oxide electrode material, in particular to a preparation method of a ribbon-shaped graded mesoporous nickel oxide high specific capacitance electrode material. Background technique [0002] Supercapacitor (electrochemical capacitor) is a new type of energy storage device between traditional capacitors and batteries. It has the characteristics of fast charge and discharge speed, high power density, long cycle life and environmental friendliness. Therefore, supercapacitors have broad application prospects in electronic digital products, aerospace, electric vehicles and other fields. Nickel oxide has attracted extensive attention due to its easy availability, environmental friendliness, and high chemical stability. In recent years, there have been many reports on the preparation methods of NiO. For example, "Method for preparing ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G53/04
Inventor 胡中华姚明明刘亚菲刘佩佩张蔷
Owner TONGJI UNIV
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