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Preparation method for three-element oxide composite material and application

A ternary oxide and composite material technology, which is applied in the manufacture of hybrid/electric double-layer capacitors, electrodes of hybrid capacitors, etc., can solve the problems of long time required, inability to mass-produce, complicated preparation methods, etc., reaching time-consuming The effect of short, low cost and simple preparation process

Active Publication Date: 2017-03-22
GUILIN UNIV OF ELECTRONIC TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, transition metal oxides usually use hydrothermal method, vapor deposition method, physical method, etc. The preparation method is complicated, takes a long time, and cannot be produced in large quantities. Therefore, it is very important to develop a new preparation method for transition metal oxides.

Method used

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  • Preparation method for three-element oxide composite material and application
  • Preparation method for three-element oxide composite material and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Preparation of Co 3 o 4 -Ni 3 o 4 -MnO 2 Ternary oxide composite materials:

[0032] (1) Take 50 g CoSO 4 , 5 g NiSO 4 Dissolve in 100 mL of water;

[0033] (2) Weigh 2 g NaBH 4 , and then added to water to give NaBH 4 aqueous solution;

[0034] (3) NaBH from step (2) 4 The aqueous solution is slowly added dropwise to the aqueous solution of step (1);

[0035] (4) After the dropwise addition is completed, let the solution react for 2 hours, filter, wash, and dry to obtain powder;

[0036] (5) Add the powder obtained in step (4) to 1 g / L potassium permanganate aqueous solution to react; filter, wash, and dry to obtain Co 3 o 4 -Ni 3 o 4 -MnO 2Ternary oxide composite materials;

[0037] (6) Weigh 0.008 g Co-Ni-W alloy oxide-graphene composite material, 0.001 g acetylene black (produced in Tianjin, 90%) and 0.001 g polytetrafluoroethylene micropowder (produced in Tianjin, 90%), place in Add a few drops of ethanol (produced in Tianjin, AR) to a small agate...

Embodiment 2

[0042] Preparation of Co 3 o 4 -Ni 3 o 4 -MnO 2 Ternary oxide composite materials:

[0043] (1) Take 50 g CoSO 4 , 5 g NiSO 4 Dissolve in 100 mL of water;

[0044] (2) Weigh 1 g NaBH 4 , and then added to water to give NaBH 4 aqueous solution;

[0045] (3) NaBH from step (2) 4 The aqueous solution is slowly added dropwise to the aqueous solution of step (1);

[0046] (4) After the dropwise addition is completed, let the solution react for 2 hours, filter, wash, and dry to obtain powder;

[0047] (5) Add the powder obtained in step (4) to 3 g / L potassium permanganate aqueous solution to react, filter, wash, and dry to obtain Co 3 o 4 -Ni 3 o 4 -MnO 2 Ternary oxide composite materials;

[0048] (6) Weigh 0.008 g Co-Ni-W alloy oxide-graphene composite material, 0.001 g acetylene black (produced in Tianjin, 90%) and 0.001 g polytetrafluoroethylene micropowder (produced in Tianjin, 90%), place in Add a few drops of ethanol (produced in Tianjin, AR) to a small agat...

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Abstract

The invention discloses a preparation method for a three-element oxide composite material and an application in the field of super capacitors. According to the method, an in-situ chemical reduction method is employed to prepare a Co-Ni-B alloy material in solution, then the alloy and potassium permanganate realize oxidation reduction reaction to acquire a Co3O4-Ni3O4-MnO2 ternary oxide. Through the method, strong reductibility of the Co-Ni-B alloy and strong oxidizability of the potassium permanganate are utilized to realize oxidation reduction reaction of the two, the Co-Ni-B is oxidized to be Co3O4-Ni3O4, the potassium permanganate is reduced to be MnO2, the method is simple, an application scope is wide, and manufacturing cost is low; the three oxides are composed together, under the synergistic effect among the materials, excellent electricity storage property is realized, the three-element oxide composite material can be applied to the super capacitors, excellent electrical performance is realized, moreover, the method is applicable to mass-scale production, and the application effect is good.

Description

technical field [0001] The invention relates to the technical field of supercapacitors, in particular to a Co 3 o 4 -Ni 3 o 4 -MnO 2 Preparation method of ternary oxide composite material and its application in supercapacitor field. Background technique [0002] Supercapacitors have the advantages of high power density, long cycle life, and high energy density, and have received extensive attention in recent years. At present, the research on electrode materials for supercapacitors mainly focuses on carbon-based materials, polymer materials, transition metal oxides and other materials. The quality of the performance directly determines the size of the capacitor capacity, which is also one of the most critical factors affecting the supercapacitor. Transition metal oxides are not only cheap and widely sourced, but also have a variety of electronic valence states and excellent energy storage properties, which have attracted much attention. Therefore, metal oxides have be...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/86H01G11/46H01G11/30
CPCY02E60/13H01G11/86H01G11/30H01G11/46
Inventor 邹勇进殷莹向翠丽徐芬孙立贤
Owner GUILIN UNIV OF ELECTRONIC TECH
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