High-specific-energy/high-specific-power type super battery

A super battery, high specific power technology, used in secondary batteries, battery electrodes, electrode carriers/current collectors, etc., can solve the problems of unsatisfactory life and safety, long cycle life, small self-discharge, etc. power, increased reliability, good cycle life effect

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

[0005] Due to its high working voltage, small size, light weight, high specific energy, no memory effect, no pollution, small self-discharge, and long cycle life, lithium ion is considered to be the most ideal energy source in the 21st century. It has been successfully used in mobile phones, Notebooks, digital cameras and other fields, but due to the characteristics of lithium-ion batteries, they cycle at high rates, and their life and safety are not ideal, so that their application in the field of new energy electric vehicles is not mature

Method used

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  • High-specific-energy/high-specific-power type super battery

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Embodiment 1

[0044] The preparation steps of the positive electrode sheet of lithium ion intercalation compound: the LiMn that total amount is 200g 2 o 4 , conductive carbon black, and PVDF are mixed in a mass ratio of 85:8:7, adjusted to a slurry with NMP, and then coated on a 20 μm aluminum foil (the coating weight gain is: 20mg / cm 2 ), dried (110-120°C), rolled, and cut into pieces (size: 37*59mm 2 ), 24h vacuum drying (120~130°C) to make a positive electrode sheet; the preparation steps of the activated carbon positive electrode sheet are as follows: a total amount of 200g of activated carbon, conductive carbon black, PVDF is mixed in a mass ratio of 90:5:5, and NMP Make a slurry, and then coat it on a 16μm aluminum foil (coating gain: 15mg / cm 2 ), dried (110-120°C), rolled, and cut into pieces (size: 37*59mm 2 ), 24h vacuum drying (120~130°C) to make a positive electrode sheet; the production of negative electrode sheet: mix a total of 400g of hard carbon and PVDF at a mass ratio o...

Embodiment 2

[0046] The preparation steps of the positive electrode sheet of lithium ion intercalation compound: the LiMn that total amount is 200g 2 o 4 , conductive carbon black, and PVDF are mixed in a mass ratio of 85:8:7, adjusted to a slurry with NMP, and then coated on a 20 μm aluminum foil (the coating weight gain is: 20mg / cm 2 ), dried (110-120°C), rolled, and cut into pieces (size: 37*59mm 2 ), 24h vacuum drying (120~130°C) to make a positive electrode sheet; the preparation steps of the activated carbon positive electrode sheet are as follows: a total amount of 200g of activated carbon, conductive carbon black, PVDF is mixed in a mass ratio of 90:5:5, and NMP Make a slurry, and then coat it on a 20μm aluminum foil (coating gain: 15mg / cm 2 ), dried (110-120°C), rolled, and cut into pieces (size: 37*59mm 2 ), 24h vacuum drying (120~130°C) to make a positive electrode sheet; the production of negative electrode sheet: mix a total of 400g of graphite and PVDF at a mass ratio of 9...

Embodiment 3

[0048] The preparation steps of the positive electrode sheet of lithium ion intercalation compound: the LiMn that total amount is 200g 2 o 4, conductive carbon black, and PVDF are mixed in a mass ratio of 85:8:7, adjusted to a slurry with NMP, and then coated on a 20 μm aluminum foil (the coating weight gain is: 20mg / cm 2 ), dried (110-120°C), rolled, and cut into pieces (size: 37*59mm 2 ), 24h vacuum drying (120~130°C) to make a positive electrode sheet; the preparation steps of the activated carbon positive electrode sheet are as follows: a total amount of 200g of activated carbon, conductive carbon black, PVDF is mixed in a mass ratio of 90:5:5, and NMP Make a slurry, and then coat it on a 20μm aluminum foil (coating gain: 20mg / cm 2 ), dried (110-120°C), rolled, and cut into pieces (size: 37*59mm 2 ), 24h vacuum drying (120~130°C) to make a positive electrode sheet; the production of negative electrode sheet: mix a total of 400g of hard carbon and PVDF at a mass ratio of...

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Abstract

The invention relates to a high-specific-energy/high-specific-power type super battery, 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 is formed by parallel connection of two types of electrode pieces, i.e. an electrode piece which adopts a lithium-ion-embedded compound in a lithium ion battery as an active material and an electrode piece of a porous carbon material in a double electric layer super capacitor, the negative electrode adopts a negative electrode carbon material of the lithium ion battery, and the electrolyte is of an organic solvent containing lithium ion salt electrolyte. The high-specific-energy/high-specific-power type super battery has high energy density and power density simultaneously, wherein the specific energy can be up to 50-110wh/kg, and the power density can be up to 450-8000w/kg; and the high-specific-energy/high-specific-power type super battery 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 relates to the technical field of batteries, in particular to a high specific energy / high specific power type super battery. Background technique [0002] With the depletion of natural resources such as coal, oil, and natural gas that humans have been using on a large scale, problems such as energy crisis and resource shortage have become increasingly prominent. At the same time, the environmental problems caused by the harmful gases released by the combustion of natural fossil energy have increasingly become an important factor restricting the development of human society. Therefore, making full use of existing energy sources and developing green and environmentally friendly new energy sources and related technologies has become an urgent task for current researchers. Among them, the field of energy storage and conversion represented by lithium-ion secondary batteries and supercapacitors has become one of the research hotspots. Lithium...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M16/00H01M10/0525H01M4/38H01M4/66H01M4/62
CPCY02E60/122Y02T10/7011Y02E60/10
Inventor 安仲勋曹小卫吴明霞衡建坡苗小丽
Owner SHANGHAI AOWEI TECH DEV
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