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Capacitor battery of high-specific-energy organic system

An organic system and capacitive battery technology, which is applied in the direction of liquid electrolytic capacitors, hybrid capacitor electrodes, capacitors, etc., can solve problems such as difficult practical application and electrolyte decomposition, and achieve high energy density and high power density.

Inactive Publication Date: 2010-09-29
SHANGHAI AOWEI TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the introduction of porous carbon in the negative electrode of this type of supercapacitor, although the specific power of the device will be improved at room temperature, the porous carbon in the negative electrode will decompose the electrolyte at high temperature, making it difficult to be practical

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] The making of positive plate: the LiMn that total amount is 500g 2 o 4 , activated carbon, conductive carbon black, and PVDF are mixed in a mass ratio of 45:45:5:5, adjusted to a slurry with NMP, and then coated on a 20 μm aluminum foil (the coating weight gain is: 140g / m 2 ), dried (110-120°C), rolled, and cut into pieces (size: 37.5*59.5mm 2 ), 24h vacuum drying (120 ~ 130 ℃) to make a positive sheet.

[0043] The making of negative plate: the total amount of 500g of hard carbon and PVDF is mixed in a mass ratio of 90:10, adjusted to slurry with NMP, and then coated on a 16 μm copper foil (the coating weight gain is: 90g / m 2 ), after drying (110~120℃), rolling and cutting (size: 37.5*59.5mm 2 ), 24h vacuum drying (120 ~ 130 ℃) to make negative electrode sheet. A three-layer composite diaphragm is selected as the diaphragm, and the positive electrode sheet (8 pieces), the diaphragm, and the negative electrode sheet (9 pieces) are laminated to form a battery cell, a...

Embodiment 2

[0045] The making of positive plate: the LiMn that total amount is 500g 2 o 4 , activated carbon, conductive carbon black, and PVDF are mixed in a mass ratio of 20:70:5:5, adjusted to a slurry with NMP, and then coated on a 20 μm aluminum foil (the coating weight gain is: 140g / m 2 ), dried (110-120°C), rolled, and cut into pieces (size: 37.5*59.5mm 2 ), 24h vacuum drying (120 ~ 130 ℃) to make a positive sheet.

[0046] The making of negative plate: the total amount of 500g of hard carbon and PVDF is mixed in a mass ratio of 90:10, adjusted to slurry with NMP, and then coated on a 16 μm copper foil (the coating weight gain is: 90g / m 2 ), after drying (110~120℃), rolling and cutting (size: 37.5*59.5mm 2 ), 24h vacuum drying (120 ~ 130 ℃) to make negative electrode sheet. A three-layer composite diaphragm is selected as the diaphragm, and the positive electrode sheet (8 pieces), the diaphragm, and the negative electrode sheet (9 pieces) are laminated to form a battery cell, a...

Embodiment 3

[0048] The making of positive plate: the LiMn that total amount is 500g 2 o 4 , activated carbon, conductive carbon black, and PVDF are mixed in a mass ratio of 85:5:5:5, adjusted into a slurry with NMP, and then coated on a 20 μm aluminum foil (the coating weight gain is: 140g / m 2 ), dried (110-120°C), rolled, and cut into pieces (size: 37.5*59.5mm 2 ), 24h vacuum drying (120 ~ 130 ℃) to make a positive sheet.

[0049] The making of negative plate: the total amount of 500g of hard carbon and PVDF is mixed in a mass ratio of 90:10, adjusted to slurry with NMP, and then coated on a 16 μm copper foil (the coating weight gain is: 90g / m 2 ), after drying (110~120℃), rolling and cutting (size: 37.5*59.5mm 2 ), 24h vacuum drying (120 ~ 130 ℃) to make negative electrode sheet. A three-layer composite diaphragm is selected as the diaphragm, and the positive electrode sheet (8 pieces), the diaphragm, and the negative electrode sheet (9 pieces) are laminated to form a battery cell, ...

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Abstract

The invention relates to a capacitor battery of a high-specific-energy organic system, consisting of a positive electrode, a negative electrode, a diaphragm between the positive electrode and the negative electrode, and organic electrolyte, wherein the positive electrode adopts the mixture of a lithium-ion-embedded compound and a porous carbon material, the negative electrode is hard carbon, and the electrolyte adopts electrolyte of an organic solvent containing lithium ions. The super capacitor battery prepared by the invention has the characteristics of high energy density (up to 20-90Wh / Kg) and high power density (larger than 4500W / Kg), can be widely applied in the fields such as electric automobiles, electric tools, solar energy storage, wind energy storage, portable household appliances and the like.

Description

technical field [0001] The invention belongs to the technical field of capacitors and batteries, and relates to supercapacitors, in particular to organic hybrid supercapacitors and lithium ion batteries. Background technique [0002] Supercapacitor is a new type of electrochemical energy storage device between traditional capacitors and batteries. Compared with traditional capacitors, it has higher energy density, and its electrostatic capacity can reach thousands of farads to 10,000 farads. Compared with batteries, it has higher High power density and long cycle life, so it combines the advantages of traditional capacitors and batteries, and is a chemical power source with broad application prospects. It has the characteristics of high specific capacity, high power, long life, wide working temperature limit, and maintenance-free. [0003] According to different energy storage principles, supercapacitors can be divided into three categories: electric double layer capacitors...

Claims

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Application Information

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IPC IPC(8): H01G9/145H01G9/042H01G9/035
CPCH01M4/133Y02E60/122H01M10/0525Y02T10/7011Y02E60/13H01G11/06H01G11/32H01G11/50Y02E60/10Y02T10/70
Inventor 杨恩东安仲勋吴明霞曹小卫
Owner SHANGHAI AOWEI TECH DEV
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