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Lithium ion super capacitor and assembling method thereof

A technology of supercapacitor and assembly method, applied in capacitors, electrolytic capacitors, capacitor parts and other directions, can solve the problems of low energy density of supercapacitors, and achieve the effect of improving power density, improving power density and high power characteristics

Inactive Publication Date: 2009-01-07
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to further expand the application of supercapacitors in the energy field, the object of the present invention is to provide a novel asymmetric lithium-ion supercapacitor and its assembly method. Low energy density of supercapacitors with symmetric or asymmetric structure of electrolyte or non-lithium salt organic electrolyte and further expansion of its application range

Method used

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  • Lithium ion super capacitor and assembling method thereof
  • Lithium ion super capacitor and assembling method thereof
  • Lithium ion super capacitor and assembling method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The titanium oxide nanotube substrate was cut into a suitable size (1.1 cm×0.8 cm), and the mass of the titanium oxide nanotube was calculated from the apparent area to be 0.1264 mg, washed with acetone and dried in vacuum.

[0024] According to the active electrode material (the mesopore carbon pore diameter is 3-6nm, by volume ratio, the mesopore accounts for 45%, and the rest are micropores): binder (polytetrafluoroethylene PTFE): the quality of conductive agent (acetylene black) The ratio is 90:5:5 The electrode material with a total mass of 100 mg is weighed, dispersed in 1 ml of absolute ethanol, ground, mixed evenly, and vacuum-dried to prepare a composite electrode material. Weigh a composite electrode material containing 2 mg of active electrode material, wet it with absolute ethanol (about 2 ml), apply it to the surface of the foamed nickel collector, and dry it in vacuum.

[0025] Titanium oxide nanotube substrate and mesoporous carbon foamed nickel electrode...

Embodiment 2

[0031] The difference from Example 1 is:

[0032] The titanium oxide nanotube array substrate was cut into a suitable size (1 cm×1 cm), and the mass of the titanium oxide nanotubes was calculated from the apparent area to be 0.1342 mg, washed with acetone and dried in vacuum.

[0033] According to the mass ratio of active electrode material (activated carbon, micropore ratio 76%, the rest is mesopore): binder (PTFE): conductive agent (single-walled carbon nanotube) is 85: 5: 10 and the weighing total mass is 100mg The electrode material was dispersed in 1ml of absolute ethanol, ground, mixed evenly, and prepared into a composite electrode material after vacuum drying. Weigh a composite electrode material containing 2 mg of active electrode material, wet it with absolute ethanol (about 2 ml), apply it to the surface of the foamed nickel collector, and dry it in vacuum.

[0034] The titanium oxide nanotube array substrate and the activated carbon foamed nickel electrode were re...

Embodiment 3

[0039] The difference from Example 1 is:

[0040] According to the active electrode material (mesoporous carbon or titanium oxide nanoparticles, the pore diameter of mesoporous carbon is 3-5nm, by volume ratio, mesopores account for 50%, and the rest are micropores; the specification of titanium oxide nanoparticles is 10-50nm): Binder (PVDF): The mass ratio of conductive agent (multi-walled carbon nanotubes) is 80:10:10 Weigh the electrode material with a total mass of 100mg, disperse in 1ml of absolute ethanol, grind, mix evenly, and vacuum dry Then prepare composite electrode materials. Weigh a composite electrode material containing 2 mg of active electrode material, wet it with absolute ethanol (about 2 ml), apply it to the surface of the foamed nickel collector, and dry it in vacuum.

[0041] The foamed nickel electrodes of mesoporous carbon and titanium oxide nanoparticles were respectively used as the counter electrode of lithium metal, and assembled into a half-cell t...

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Abstract

The invention relates to a design method of an asymmetric supercapacitor, in particular to a novel lithium ion supercapacitor and an assembling method thereof, and the invention solves the problems of low energy density of water electrolyte-based or non-lithium salt organic electrolyte-based supercapacitors with symmetrical or asymmetric structure and the like, and further expands the application fields of the supercapacitors. In order to greatly improve the energy density of the supercapacitor, an amorphous titanium oxide nanotube or nano-structure of a lithium ion energy storage mechanism is taken as a cathode, a carbon material of an electric double-layer energy storage mechanism is taken as an anode, the lithium salt is taken as an electrolyte and organic electrolyte solution is adopted; an amorphous titanium oxide nanostructure bulk phase lithium storage high-capacity mechanism can be fully utilized to greatly improve the energy density by virtue of the novel lithium ion supercapacitor and the assembling method; a hole channel of mesoporous structure is also useful for the diffusion of macro molecules of the organic electrolyte, which effectively improves the power density; the organic electrolyte causes the working voltage of the lithium ion supercapacitor to reach 3V; finally, the exportable extremely high energy density and power density are obtained.

Description

technical field [0001] The invention relates to a design method of a supercapacitor, in particular to a novel asymmetric lithium-ion supercapacitor and an assembly method thereof. Background technique [0002] As fossil energy with limited reserves, coal and oil are facing the plight of serious pollution and depleted sources. More than a century of industrial development powered by fossil energy has degraded the earth's environment and over-exploited resources. In order to achieve sustainable development, it is particularly important to develop a green energy model. In the national medium and long-term technological development outline, the key materials and preparation technology of supercapacitors are included in the research category of cutting-edge new material technology as an important part. Supercapacitors have the remarkable characteristics of high power and are an indispensable key auxiliary device for batteries. They have emerged in electric vehicles, digital con...

Claims

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Application Information

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IPC IPC(8): H01G9/00H01G9/022H01G9/042H01G9/058H01M10/02H01M4/00H01M10/00H01M14/00H01G11/24H01G11/84
CPCY02E60/13Y02E60/10
Inventor 成会明王大伟方海涛李峰刘敏逯高清
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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