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A lithium-ion carbon-based supercapacitor

A supercapacitor, lithium ion technology, applied in the field of electrochemical energy storage devices, can solve the problems of low power density, high power density, low energy density, etc., and achieve the effects of good safety performance, long life and high power density

Inactive Publication Date: 2017-07-14
DONGGUAN MCNAIR NEW POWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Lithium-ion has high energy density, but low power density, and short life (about 1000 times); supercapacitor has long life (up to 100,000 times or more), high power density, but low energy density

Method used

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  • A lithium-ion carbon-based supercapacitor
  • A lithium-ion carbon-based supercapacitor
  • A lithium-ion carbon-based supercapacitor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Activated carbon, conductive agent sp and binder polytetrafluoroethylene are weighed according to the ratio of mass ratio 85:10:5, activated carbon, conductive agent sp are placed in a clean and dry beaker, and (V 异丙醇 :V 水 =3:1) isopropanol solution, and keep stirring to make it wet to a paste, then add 60wt% polytetrafluoroethylene emulsion dropwise for mixing, after stirring for 0.5h, place it in a vacuum drying oven at a constant temperature of 80°C After 1 hour, take it out and put it in a muffle furnace at 285°C to heat it at a constant temperature for 5-8 minutes, then take it out for later use. Weigh the above-mentioned processed electrode material, put it into an agate mortar and grind it into a thin slice with a smooth surface, place the thin slice on the top of the circular nickel sheet collector with a thickness of 9um to 25um, and press it with a tablet press at 10Mpa to form a positive electrode material. Electrode 1.

[0025] Weigh graphite, conductive a...

Embodiment 2

[0029] Activated carbon, conductive agent sp and binder polytetrafluoroethylene are weighed according to the ratio of mass ratio 85:10:5, activated carbon, conductive agent sp are placed in a clean and dry beaker, and (V 异丙醇 :V 水 =3:1) isopropanol solution, and keep stirring to make it wet to a paste, then add 60wt% polytetrafluoroethylene emulsion dropwise for mixing, after stirring for 0.5h, place it in a vacuum drying oven at a constant temperature of 80°C After 1 hour, take it out and put it in a muffle furnace at 285°C to heat it at a constant temperature for 5-8 minutes, then take it out for later use. Weigh the above-mentioned processed electrode material, put it into an agate mortar and grind it into a thin slice with a smooth surface, place the thin slice on the top of the circular nickel sheet collector with a thickness of 9um to 25um, and press it with a tablet press at 10Mpa to form a positive electrode material. Electrode 1.

[0030] Weigh graphite, conductive a...

Embodiment 3

[0034] Activated carbon, conductive agent sp and binder polytetrafluoroethylene are weighed according to the ratio of mass ratio 85:10:5, activated carbon, conductive agent sp are placed in a clean and dry beaker, and (V 异丙醇 :V 水 =3:1) isopropanol solution, and keep stirring to make it wet to a paste, then add 60wt% polytetrafluoroethylene emulsion dropwise for mixing, after stirring for 0.5h, place it in a vacuum drying oven at a constant temperature of 80°C After 1 hour, take it out and put it in a muffle furnace at 285°C to heat it at a constant temperature for 5-8 minutes, then take it out for later use. Weigh the above-mentioned processed electrode material, put it into an agate mortar and grind it into a thin slice with a smooth surface, place the thin slice on the top of the circular nickel sheet collector with a thickness of 9um to 25um, and press it with a tablet press at 10Mpa to form a positive electrode material. Electrode 1.

[0035] Weigh graphite, conductive age...

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Abstract

The invention relates to the field of electrochemical energy storage devices, in particular to a novel lithium ion carbon-based super capacitor. The lithium ion carbon-based super capacitor is composed of a shell, a positive electrode slice, a negative electrode slice, a diaphragm located between the positive electrode slice and the negative electrode slice and organic electrolyte. The lithium ion carbon-based super capacitor is characterized in that the positive electrode slice is mainly formed by pressing activated carbon and a single conductive agent and bonding agent mixing face on a current collector; the negative electrode slice is mainly formed by coating copper foil with graphite and a single conductive agent and bonding agent mixing face; the organic electrolyte is composed of electrolyte salt containing lithium ions and a mixed organic solvent, and a lithium slice and a diaphragm are further arranged between the shell and the negative electrode slice. The super capacitor has the advantages that compared with an existing lithium ion battery, the product is higher in power density, longer in service life and better is safety performance.

Description

technical field [0001] The invention relates to the field of electrochemical energy storage devices, in particular to a novel lithium-ion carbon-based supercapacitor. Background technique [0002] Power supply is an integral part of all kinds of circuits. In the absence of mains power, only by storing electric energy can the circuit be used. Therefore, various energy storage devices are an important part of the mobile power system, and their performance is directly related to the service life and power characteristics of mobile appliances. and other important indicators. [0003] At present, energy storage devices include primary batteries, secondary batteries, and supercapacitors. The primary battery is not rechargeable, cannot be used repeatedly, and has a high overall cost. Secondary batteries can be repeatedly charged and discharged, and are currently the preferred energy storage devices for many mobile appliances. At present, commonly used secondary batteries are: l...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G11/06H01G11/28H01G11/50H01G11/52
CPCY02E60/13
Inventor 屈德宇陶友珍刘剑雄赵玲张新河毛文峰彭辉高川
Owner DONGGUAN MCNAIR NEW POWER
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