A hybrid super capacitor and a method for preparing the same

A technology for supercapacitors and electric double-layer capacitors, applied in hybrid capacitor electrodes, hybrid capacitor electrolytes, capacitors, etc., can solve the problems of less research and development, and achieve good high-current performance and good cycle stability.

Inactive Publication Date: 2009-08-26
GUILIN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the research and development of hybrid supercapacitors, a lot of work mainly refers to the transition metal oxide positive electrode materials used in water-based secondary batteries, and the organic ele

Method used

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  • A hybrid super capacitor and a method for preparing the same
  • A hybrid super capacitor and a method for preparing the same
  • A hybrid super capacitor and a method for preparing the same

Examples

Experimental program
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Embodiment

[0011] The negative pole of the hybrid supercapacitor is a hydrogen storage alloy material; the positive pole is a carbon material for an electric double-layer capacitor; the electrolyte is 6mol L -1 Aqueous potassium hydroxide solution.

[0012] Take 35 mg of activated carbon (A.R, Shanghai Colloidal Chemical Reagent Factory), 10 mg of graphite (A.R, Shanghai Colloidal Chemical Reagent Factory) and grind and mix for 10 min, add a small amount of deionized water to moisten, add commercially available polytetrafluoroethylene containing 5 mg of binder Emulsion (containing 60% PTFE, Guangzhou Songbai Chemical Factory), stirred until there is no dispersed powder, dried at 80° C. to constant weight to obtain dry slurry powder. Next, weigh 20 mg of dry slurry powder and fill it in a 10mm×20mm nickel foam current collector (Guangxi Wuzhou Sanhe New Material Technology Co., Ltd.), and use a BY-10 hand lever hydraulic prototype (Hunan Xiangtan Zhongshan Instrument Factory) Press for 5...

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Abstract

The invention discloses a hybrid super capacitor and a method for preparing the same. The hybrid super capacitor comprises a negative electrode made of hydrogen storage alloy material; a positive electrode which is made of carbon material special for electric double layer capacitor or substance with quasi capacitor characteristic or composite material compouned by the substance and the carbon material; and electrolyte adopting 6 mol.L-8 mol.L of potassium hydroxide or sodium hydroxide water solution. Compared with the electric double layer capacitor with alkaline water system electrolyte, the capacity density and energy density of the hybrid super capacitor prepared by the invention can be increased by times, and the invention has better high power capability and cyclical stability; in addition, the hybrid super capacitor is used as power of electric motor car, electric tool, and information device, and used as materiel facility pulse power source and photovoltaic power plant storage battery.

Description

technical field [0001] The invention relates to a hybrid supercapacitor and a manufacturing method thereof. Background technique [0002] A supercapacitor is an energy storage device with much higher energy density than traditional electrostatic capacitors, power density and cycle life far exceeding batteries. It is widely used in electronic toys, information products, household appliances, electric tools, electric vehicles, weapons and equipment, Electric energy storage and other fields have a wide range of applications. However, the low energy density of supercapacitors limits its use and rapid development as a high-power power supply. Supercapacitors store electrical energy through the electric double layer at the electrode interface or the quasi-capacitive Faradaic reaction characteristics of the electrodes. Supercapacitors can be divided into symmetrical and asymmetrical. Among them, the positive and negative energy storage principles of the former are the same or sim...

Claims

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Application Information

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IPC IPC(8): H01G9/155H01G9/058H01G9/042H01G9/038H01G9/035H01G11/30H01G11/32H01G11/58
CPCY02T10/7022Y02E60/13H01G11/34Y02T10/70
Inventor 杨建文洪英英陈永珍
Owner GUILIN UNIVERSITY OF TECHNOLOGY
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