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Capacitor battery with high safety

A capacitor battery, high-safety technology, applied in the field of electrochemistry, can solve the problems of accelerated oxidation of electrolyte, battery thermal runaway, battery overcharge, etc., and achieves the effect of high electrochemical window, low vapor pressure, and improved safety.

Inactive Publication Date: 2013-01-16
张宝生
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the battery is overcharged, causing the positive electrode to accelerate the oxidation of the electrolyte when the voltage is high, and the heat and gas generated may also cause the battery to run away thermally.

Method used

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  • Capacitor battery with high safety

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Positive electrode sheet production: put commercialized nickel-cobalt lithium manganese oxide, activated carbon, carbon fiber, and polyvinylidene fluoride in a mass percentage of 80:12:3:5 in a blender with a total amount of 1000 g, and slowly add solvent NMP to carry out Mix the slurry, after the powder and the solvent are fully mixed, the prepared slurry is evenly coated on both sides of the 16 micron aluminum foil, dried, and then rolled and compacted with a pair of rollers. The compacted pole piece is subjected to surface protection coating treatment, and a 1 micron aluminum oxide coating is applied to the positive pole piece, and then dried and cut into pieces to make a positive pole piece for future use.

[0017] Negative electrode sheet production: Accurately measure mesocarbon microspheres, carbon nanotubes, conductive graphite, and polyvinylidene fluoride with a total amount of 1000 g according to 85:5:4:6, and slowly add them to the container and mix them. Slo...

Embodiment 2

[0020] Positive plate production: put the commercialized lithium manganate, carbon nanotubes, conductive graphite, and polyvinylidene fluoride with a total amount of 1000 g in a stirrer at a mass percentage of 80:12:3:5, and slowly add the solvent NMP Carry out slurry mixing, after the powder and solvent are fully mixed, the prepared slurry is evenly coated on both sides of 16 micron aluminum foil, dried, and then rolled and compacted with a pair of rollers. The compacted pole piece is subjected to surface protection coating treatment, and a 0.5 micron aluminum oxide coating is applied to the positive pole piece, then dried and cut into pieces to make a positive pole piece for future use.

[0021] Negative electrode sheet production: Measure the mesocarbon microspheres, activated carbon, conductive graphite, and polyvinylidene fluoride with a total amount of 1000g accurately according to 85:5:4:6 and slowly add them to the container. After mixing, slowly add The solvent NMP is...

Embodiment 3

[0024] Positive electrode sheet production: put the commercialized lithium manganate, activated carbon, conductive graphite, and polyvinylidene fluoride with a total amount of 1000 g in a blender at a mass percentage of 80:12:3:5, and slowly add the solvent NMP for synthesis. After the powder and the solvent are fully mixed, the prepared slurry is evenly coated on both sides of the 16-micron aluminum foil, dried, and then rolled and compacted with a pair of rollers. The compacted pole piece is subjected to surface protection coating treatment, and a 0.3 micron aluminum oxide coating is applied to the positive pole piece, and then dried and cut into pieces to make a positive pole piece for future use.

[0025] Negative electrode sheet production: Accurately measure mesocarbon microspheres, carbon nanotubes, conductive graphite, and polyvinylidene fluoride with a total amount of 1000 g according to 85:5:4:6, and slowly add them to the container and mix them. Slowly add the solve...

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Abstract

Relating to novel chemical energy storage technologies, the invention provides a capacitor battery with high safety. The battery positive electrode is composed of a positive active material layer and a protective coating. The battery negative electrode consists of a negative active material layer and the protective coating, which is composed of aluminum oxide of 0.1micrometer-8micrometers. The battery positive electrode material is one or more of ferrate, lithium manganate, lithium iron phosphate, lithium manganese phosphate, lithium vanadium phosphate and lithium ferrous silicate. The battery negative electrode material is one or more of graphite, lithium titanate, a carbon-silicon composite material and a carbon-tin composite material. The capacitor material is one or more of nano-sized graphene, graphene oxide, carbon nanotubes and activated carbon. PP, PE or a composite film of the two can be selected as a diaphragm. An electrolyte is formed by dissolving a lithium salt in an organic solution and adding an ionic liquid. The capacitor battery has the characteristics that: its energy density is large and is similar to that of lithium batteries, and its large current charge-discharge characteristics and recycling service life are similar to those of supercapacitors, so that the capacitor battery can meet the requirements of being used as a high performance energy storage and power battery.

Description

technical field [0001] The invention relates to an energy storage battery in the electrochemical field, in particular to a high-safety capacitor battery. Background technique [0002] With the development of social economy, people pay more and more attention to green energy and ecological environment. As we all know, electrochemical supercapacitor is a new type of energy storage device developed in recent years. According to the principle of energy storage, there are two types of electric double layer capacitors and Faraday quasi-capacitors. The charge storage of supercapacitors occurs on the electric double layer formed by electrodes and electrolytes, as well as underpotential deposition, electrochemical adsorption, desorption and oxidation on the electrode surface. The migration of charges generated by reduction; chemical batteries store charges through electrochemical reactions that generate faradaic charge transfer. Capacitive batteries with high safety are an organic ...

Claims

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Application Information

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IPC IPC(8): H01M10/42H01M4/62H01M10/0567
CPCY02E60/12Y02E60/10
Inventor 张宝生
Owner 张宝生
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