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Inorganic nanoparticle containing organic electrolyte solution of super capacitor

A technology of inorganic nanoparticles and supercapacitors, applied in the direction of hybrid capacitor electrolytes, etc., can solve the problems of supercapacitor temperature rise, safety hazards, supercapacitor application expansion, etc., to prolong service life, improve high temperature resistance and voltage resistance , Enhance the effect of safety performance

Inactive Publication Date: 2015-06-10
NINGBO CRRC NEW ENERGY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This has led to the limitation of the application of supercapacitors in many fields
For example, when a large supercapacitor is used in the rail transit field as an energy storage device for energy storage and feedback, continuous high-current charging and discharging will cause the temperature of the supercapacitor to rise, causing safety hazards
In addition, some military and other fields require energy storage devices to work at high temperatures, which limits the further expansion of supercapacitor applications.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Add silicon oxide particles with a particle size of 20-30nm at a mass ratio of 0.1% to the 1mol / L tetraethylammonium tetrafluoroborate / acetonitrile system organic electrolyte, and stir evenly. The specific capacity of the supercapacitor made with this electrolyte is 95% of the organic electrolyte without inorganic nanoparticles, and the internal resistance is 1.2 times. After 80°C, 2.85V high-temperature float charge test for 2 months, the capacity retention rate was 86%, and the internal resistance increased by 61%.

Embodiment 2

[0019] Add 0.05% by mass ratio of alumina particles with a particle size of 50-100 nm to the 1 mol / L triethylmethylammonium tetrafluoroborate / acetonitrile system organic electrolyte, and stir evenly. The specific capacity of the supercapacitor made with this electrolyte is 97% of the organic electrolyte without inorganic nanoparticles, and the internal resistance is 1.15 times. After 80°C, 2.85V high-temperature float charge test for 2 months, the capacity retention rate was 84%, and the internal resistance increased by 70%.

Embodiment 3

[0021] Add magnesium oxide particles with a particle size of 30-50nm at a mass ratio of 1% to the 1mol / L 5-azaspiro[4,4]nonane ammonium tetrafluoroborate / acetonitrile system organic electrolyte, and stir evenly. The specific capacity of the supercapacitor made with this electrolyte is 98% of that of the organic electrolyte without inorganic nanoparticles, and the internal resistance is 1.2 times. After 80°C, 2.85V high-temperature float charge test for 2 months, the capacity retention rate was 89%, and the internal resistance increased by 65%.

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PUM

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Abstract

The invention relates to the technical field of super capacitors, and specifically relates to an inorganic nanoparticle containing organic electrolyte solution of a super capacitor. The electrolyte solution is prepared from an organic solvent, electrolyte salt and inorganic compound nanoparticles. The electrolyte solution has the advantages that the high temperature resistance of the super capacitor can be improved, the service life can be prolonged, and the safety of the super capacitor can be improved.

Description

technical field [0001] The invention relates to the technical field of supercapacitors, in particular to an organic electrolyte solution for supercapacitors containing inorganic nanoparticles. Background technique [0002] Electrochemical capacitors, also known as super capacitors, extreme capacitors, etc., are new energy storage devices between secondary batteries and traditional electrostatic capacitors. They have higher energy density than traditional electrostatic capacitors and more energy than secondary batteries. Greater power density, which has the advantages of high power density, long cycle life, wide operating temperature range, good cycle stability, maintenance-free, and environmental friendliness. It has been used in many fields, such as rail transit, wind power generation, and hybrid power. Vehicles, backup power supplies for electronic devices, etc. have shown broad application prospects. [0003] The current supercapacitor organic system electrolyte is mainl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/64
CPCH01G11/64H01G11/58Y02E60/13
Inventor 阮殿波左飞龙傅冠生
Owner NINGBO CRRC NEW ENERGY TECH CO LTD
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