Zinc icon mixed super capacitor

A technology of supercapacitors and zinc ions, applied in the direction of hybrid capacitor electrodes, etc., can solve the problem of low energy density, achieve the effect of simple preparation process and wide source of materials

Inactive Publication Date: 2014-02-05
CHINA FIRST AUTOMOBILE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Carbon materials are currently the most widely used and most efficient supercapacitor energy storage materials, but b

Method used

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  • Zinc icon mixed super capacitor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Weigh manganese carbonate, citric acid and zinc carbonate (the ratio of substances is 1:6:6). Manganese carbonate and citric acid were mixed evenly in water by magnetic stirring, heated to 60°C, reacted at constant temperature for 30 minutes, added zinc carbonate, continued to stir for 2 hours, cooled to room temperature, filtered the resulting product, washed with deionized water, and vacuumed at 60°C Dry to constant weight; calcinate the obtained product at 700°C for 2 hours to obtain zinc-manganese-oxygen composite metal oxide ZnMn 2 o 4 .

[0024] Weigh ZnMn according to the mass ratio of 70:20:10 2 o 4, VGCF, PTFE made of electrode film, pressed on a stainless steel mesh disc with a diameter of 16mm, and used as a positive electrode after drying; according to the mass ratio of 80:10:10, weigh the negative electrode active material (activated carbon), VGCF, PTFE to make electrode film , pressed on a stainless steel mesh disc with a diameter of 16mm, and used as ...

Embodiment 2

[0027] Weigh ferric oxide and zinc oxide according to the amount of substances at 1:1 and put them into a ball mill tank with a material to ball mass ratio of 1:20, and ball mill for 3 hours to obtain the precursor. The precursor was calcined at 700°C for 2 hours to obtain the zinc-iron composite metal oxide ZnFe 2 o 4 .

[0028] Weigh ZnFe according to the mass ratio of 70:20:10 2 o 4 , VGCF, PTFE made of slurry, coated on the titanium-free coating side of the activated carbon fiber cloth, cut into a disc with a diameter of 16mm, dried, and rolled as the positive electrode piece; according to the mass ratio of 73:17:10, the negative electrode was weighed Active material (the mass of activated carbon and mesophase carbon microspheres is 60:40), VGCF, and PTFE are used to make slurry, coated on the titanium-free coating side of activated carbon fiber cloth, cut into discs with a diameter of 16mm, dried, and rolled The pressure is used as the negative electrode sheet, and th...

Embodiment 3

[0031] According to the mass ratio of 1:2, zinc nitrate and cobalt nitrate were weighed to make an aqueous solution, and after stirring for 1 hour in a nitrogen atmosphere, sodium hydroxide was added to control the reaction time for 3 minutes. The product was washed and dried, and the obtained composite material precursor was calcined at 600°C for 1 hour to obtain the zinc-cobalt composite metal oxide ZnCo 2 o 4 .

[0032] Weigh ZnCo according to the mass ratio of 70:20:10 2 o 4 , VGCF, PTFE made of electrode film, pressed on a stainless steel mesh disc with a diameter of 16mm, and used as a positive electrode after drying; the negative active material was weighed according to the mass ratio of 79:11:10 (the mass ratio of graphene to expanded graphite is 70 : 30), VGCF, PTFE made of electrode film, pressed on a stainless steel mesh disc with a diameter of 16mm, dried as a negative electrode, the mass ratio of positive and negative electrodes is 1:1.6.

[0033] Stack the po...

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Abstract

The invention relates to a zinc ion mixed super capacitor. The zinc ion mixed super capacitor comprises a positive electrode, a negative electrode, a separating membrane, an electrolyte and a shell body. The zinc ion mixed super capacitor is characterized in that the active material of the positive electrode is a composite metal oxide ZnMxOy (M=Fe, Co, Mn, 0<x<3, and the ratio of the x and the y is 1:1-1:4), the active material of the negative electrode is a carbon material capable of carrying out ion reversible absorption, and the electrolyte is composed of zinc salt and deionized water. The composite metal oxide is simple in preparation technology and wide in material synthesis source.

Description

technical field [0001] The invention relates to a zinc ion hybrid supercapacitor, belonging to batteries and supercapacitors. Background technique [0002] A supercapacitor is an energy storage device between a battery and an ordinary capacitor. It has the advantages of high specific power, long cycle life, high current charge and discharge, environmental friendliness, safety and maintenance-free. It is used in electronic information, instrumentation, aviation Aerospace, transportation and other fields have broad application prospects. According to the energy storage mechanism, supercapacitors can be divided into electric double layer capacitors and electrochemical capacitors. Electric double layer capacitors rely on positive and negative carbon materials to reversibly adsorb ions for energy storage. In addition to electric double layer energy storage, electrochemical capacitors also have Oxidation-reduction reaction produces partial pseudocapacitance, and the specific ener...

Claims

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Application Information

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IPC IPC(8): H01G11/46
CPCY02E60/13
Inventor 荣常如韩金磊张克金陈书礼魏晓川
Owner CHINA FIRST AUTOMOBILE
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