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A lithium-ion hybrid supercapacitor

A supercapacitor, lithium ion technology, applied in hybrid capacitors, hybrid capacitor electrodes, capacitors, etc., can solve problems such as unreported, and achieve the effect of wide source of raw materials and simple preparation process

Inactive Publication Date: 2016-05-11
CHINA FIRST AUTOMOBILE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Composite metal oxides, as an energy storage material, have been applied to the negative electrode of lithium-ion batteries (application number 200810047721.2, application number 20100545470.8), and the positive electrode of rechargeable zinc-ion batteries (application number 200910188791.4). Research on hybrid supercapacitors composed of lithium-containing materials has not been reported

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Weigh manganese carbonate, citric acid and zinc carbonate according to the ratio of substances by volume 1:6:4. 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 .

[0030] Weigh the positive electrode active material (LiMn 2 o 4 The mass ratio of VGCF and PVDF to activated carbon is 40:60), VGCF and PVDF are made into slurry in NMP, coated on aluminum foil, dried, rolled, and cut into discs with a diameter of 16mm as positive pole pieces; according to the mass ratio 80:10:10 Weigh negative active material (ZnMn 2 o 4 The mass ratio of activated carbon is 40:60), VGCF,...

Embodiment 2

[0033] Weigh the same amount of ferric oxide and zinc oxide and put them into a ball mill tank, the mass ratio of material to ball is 1:20, and ball mill for 3 hours to obtain the composite material precursor. The precursor was calcined at 700°C for 2 hours to obtain the zinc-iron composite metal oxide ZnFe 2 o 4 .

[0034] Weigh the positive electrode active material (LiFePO 4 The mass ratio of VGCF and PVDF to graphene is 40:60), VGCF and PVDF are made into slurry in NMP, coated on aluminum foil, dried, rolled, and cut into discs with a diameter of 16mm as positive pole pieces; according to the mass ratio of 70 :20:10 Weigh the negative active material (ZnFe 2 o 4 , The mass ratio of expanded graphite to activated carbon fiber is 40:20:40), VGCF and PVDF are made into slurry in NMP and coated on aluminum foil, dried, rolled, and cut into discs with a diameter of 16mm as negative electrodes. The mass ratio of positive and negative electrodes is 1:1.2.

[0035] Stack the...

Embodiment 3

[0037] 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 .

[0038] Weigh the positive electrode active material (LiCoO 2 The mass ratio of carbon nanotubes is 40:60), VGCF and PVDF are made into slurry in NMP, coated on aluminum foil, dried, cut into discs with a diameter of 16mm, and rolled as positive plates; according to the mass ratio of 78 :12:10 Weigh the negative electrode active material (ZnCo 2 o 4 The mass ratio of VGCF and PVDF to carbon airgel is 40:60), VGCF and PVDF are made into slurry in NMP, coated on aluminum foil, dried, rolled, and cut into discs with a diameter of 16mm as negative electrodes, positi...

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Abstract

The invention relates to a lithium-ion mixture super capacitor. Two kinds of negative electrode active materials are provided, the first negative electrode active material is a mixed metal oxide ZnMxOy (M=Fe, Co, Mn, 0<x<3, the ratio between x and y is 1:1-1:4), the second negative electrode active material is a carbon material, two kinds of positive electrode active materials are provided, the first positive electrode active material is a material capable of carrying out reversible embedding-off of lithium-ions, the second positive electrode active material is a carbon material, and a bath solution is composed of lithium salt and organic solvent. The mixed metal oxide is simple in preparation process and is environmentally friendly, and the source of raw materials is wide.

Description

technical field [0001] The invention relates to a lithium-ion hybrid supercapacitor, which belongs to the technical field of batteries and supercapacitors. Background technique [0002] A series of social problems brought about by the energy crisis and environmental pollution have prompted the development of energy-saving and new energy vehicles. Among them, the power supply has become a bottleneck. In addition to meeting the power, energy, safety performance and easy installation requirements of the car, the power supply also requires fast charging, long service life, and low cost; however, the power supply currently used has a low energy density and a short driving range for the car; The power density is small, and the performance of starting, climbing and accelerating the car is poor; the weight is large and the installation is inconvenient; the service life is short, which cannot be the same as that of the whole vehicle; Poor; the charging time is long, and the investm...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G11/06H01G11/50
CPCY02E60/13
Inventor 荣常如陈书礼张克金林伟青韩金磊魏晓川马千里
Owner CHINA FIRST AUTOMOBILE