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 elect

Method used

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  • Capacitor battery with high safety

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0015] Example 1.

[0016] Production of positive electrode sheet: Put the total amount of 1000g commercial lithium nickel cobalt manganese, activated carbon, carbon fiber, and polyvinylidene fluoride in a mixer at a mass percentage of 80:12:3:5, and slowly add solvent NMP to proceed. After mixing the powder and the solvent, 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 treated with a surface protective coating, and a 1 micron aluminum oxide coating is applied to the positive pole piece, then dried and cut into pieces to make a positive electrode piece for use.

[0017] Negative pole piece production: a total of 1000g of mesophase carbon microspheres, carbon nanotubes, conductive graphite, polyvinylidene fluoride are accurately measured at 85:5:4:6 and then slowly added to the container and mixed, Slowly add the solvent NMP to mix the slurry. After the powd...

Example Embodiment

[0019] Example 2.

[0020] Production of positive electrode sheet: Put a total of 1000g of commercial lithium manganate, carbon nanotubes, conductive graphite, and polyvinylidene fluoride in a mixer at a mass percentage of 80:12:3:5, and slowly add the solvent NMP After mixing the powder and the solvent, 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 treated with a surface protection coating, and a 0.5 micron aluminum oxide coating is applied to the positive pole piece, and then dried and cut into pieces to make a positive electrode piece for use.

[0021] Negative pole piece production: measure a total of 1000g of mesocarbon microspheres, activated carbon, conductive graphite, polyvinylidene fluoride according to 85:5:4:6, and slowly add them to the container after mixing, and then slowly add them The solvent NMP is used for mixing. After the powder and the...

Example Embodiment

[0023] Example 3.

[0024] Production of positive electrode sheet: Put the total amount of 1000g commercial lithium manganate, activated carbon, conductive graphite, and polyvinylidene fluoride in a mixer at a mass percentage of 80:12:3:5, and slowly add the solvent NMP to combine 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 treated with a surface protective coating, 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 electrode piece for use.

[0025] Negative pole piece production: a total of 1000g of mesophase carbon microspheres, carbon nanotubes, conductive graphite, polyvinylidene fluoride are accurately measured at 85:5:4:6 and then slowly added to the container and mixed, Slowly add the solvent NMP to mix the slurry. Aft...

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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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