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Process for manufacturing super capacitor battery

A technology for supercapacitor batteries and manufacturing methods, applied in the field of electrochemistry, capable of solving the problems of electrode slurry preparation and electrode coating difficulties for supercapacitor batteries, and large differences in physical and chemical properties, achieving excellent cycle stability and simplifying the production process , The effect of excellent ultra-high rate charge and discharge ability

Inactive Publication Date: 2008-10-22
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In view of the large difference in physical and chemical properties between lithium-ion battery electrode materials and supercapacitor electrode materials in supercapacitor batteries, the solvent, binder, solid content, and even the drying temperature and speed are affected during the preparation and coating of electrode materials. Requirements are not the same, thus the electrode slurry preparation of supercapacitor battery and the problem of electrode coating difficulty, the invention provides a kind of manufacturing method of supercapacitor battery electrode and supercapacitor battery, concrete steps are as follows:

Method used

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  • Process for manufacturing super capacitor battery
  • Process for manufacturing super capacitor battery
  • Process for manufacturing super capacitor battery

Examples

Experimental program
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Effect test

Embodiment 1

[0032] LiFePO 4 As a positive active material for lithium-ion batteries, it is mixed with binders, conductive agents, additives, solvents, etc. to prepare LiFePO 4 Positive slurry. Graphite is used as the negative electrode active material of lithium-ion batteries, mixed with binders, conductive agents, additives, solvents, etc. to prepare graphite negative electrode slurry. Activated carbon is used as the supercapacitor electrode active material, mixed with binders, conductive agents, additives, solvents, etc. to prepare activated carbon slurry.

[0033] With aluminum foil as the current collector, according to the attached figure 1 ways to alternately coat LiFePO 4 Positive electrode slurry and activated carbon slurry, control the mass ratio of lithium-ion battery electrode material to supercapacitor electrode material to 1, then dry, roll film, and cut to make positive electrode sheet of supercapacitor battery.

[0034] With copper foil as the current collector, accordi...

Embodiment 2

[0039] LiFePO 4 As a positive electrode active material for lithium-ion batteries, it is mixed with binders, conductive agents, additives, solvents, etc. to prepare LiFePO 4 Positive slurry. Graphite is used as the negative electrode active material of lithium-ion batteries, mixed with binders, conductive agents, additives, solvents, etc. to prepare graphite negative electrode slurry. Activated carbon is used as the supercapacitor electrode active material, mixed with binders, conductive agents, additives, solvents, etc. to prepare activated carbon slurry.

[0040] The lithium-ion battery electrode LiFePO 4 The positive electrode slurry and the graphite negative electrode slurry are coated on aluminum foil and copper foil respectively, and after drying, rolling, and cutting, they are respectively made into positive electrode sheets and negative electrode sheets of lithium-ion batteries, and assembled with separators to form lithium-ion battery roll cores .

[0041] The act...

Embodiment 3

[0046] LiFePO 4 As a positive electrode active material for lithium-ion batteries, it is mixed with binders, conductive agents, additives, solvents, etc. to prepare LiFePO 4 Positive slurry. Graphite is used as the negative electrode active material of lithium-ion batteries, mixed with binders, conductive agents, additives, solvents, etc. to prepare graphite negative electrode slurry. Activated carbon is used as the supercapacitor electrode active material, mixed with binders, conductive agents, additives, solvents, etc. to prepare activated carbon slurry.

[0047] With aluminum foil as the current collector, according to the attached figure 1 ways to alternately coat LiFePO 4 Positive electrode slurry and activated carbon slurry, control the mass ratio of lithium-ion battery electrode material and supercapacitor electrode material to 20, then dry, roll film, and cut to make positive electrode sheet of supercapacitor battery.

[0048] With copper foil as the current collec...

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PUM

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Abstract

The invention discloses a novel energy storage device synchronously provided with characteristics of a super capacitor and a lithium ion battery, and a method for producing the same. The invention has the following steps that: a lithium ion battery material and a super capacitor electrode material are separately prepared into pastes, and are alternatively coated to produce a super capacitor battery electrode plate; or a lithium ion battery electrode plate and a super capacitor electrode plate are respectively produced and are wound, then a lithium ion battery roll core and a super capacitor roll core are connected in parallel to form a super capacitor battery roll core cluster, then the super capacitor battery roll core cluster is placed into a battery case and welded, the drying and dehydration are performed, electrolyte is injected, and the novel energy storage device with high energy density and high power density, namely a super capacitor battery is obtained through charge and discharge activation.

Description

technical field [0001] The invention relates to a manufacturing method of an energy storage device having the characteristics of a supercapacitor and a lithium ion battery, belonging to the field of electrochemistry. Background technique [0002] Energy crisis, resource shortage, and environmental pollution are severe challenges facing human existence. Finding clean, renewable, and resource-saving secondary energy is an urgent task to achieve sustainable development of human society. [0003] Lithium-ion batteries have the advantages of high working voltage, high energy density, long cycle life, low self-discharge rate, and environmental protection, and have become the development trend of secondary batteries. It has been widely used in the power supply of portable electrical appliances such as wireless communications, digital cameras, and notebook computers, and has a wide range of electric power sources for mopeds, electric bicycles, electric motorcycles, miner's lamps, el...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/04H01G13/00H01M10/40H01M14/00
CPCY02E60/13Y02E60/122
Inventor 郭华军李新海王志兴彭文杰胡启阳张云河刘久清
Owner CENT SOUTH UNIV
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