Unlock instant, AI-driven research and patent intelligence for your innovation.

Preparation method of non-stoichiometry ruthenium dioxide electrode material

A non-stoichiometric, ruthenium dioxide technology, applied in hybrid capacitor electrodes, hybrid/electric double-layer capacitor manufacturing, etc., can solve the problem of lack of electrochemical activity, affect the quality of tantalum ruthenium capacitor products, and limit the high specific capacity of ruthenium dioxide and other issues to achieve the effect of high specific capacitance

Inactive Publication Date: 2013-03-13
SHANGHAI AOWEI TECH DEV
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the lack of electrochemical activity, the existence of ruthenium not only greatly limits the high specific capacity of ruthenium dioxide, but also seriously affects the quality of tantalum ruthenium capacitor products.
After searching, there is no relevant technology available

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Dissolve 10g of commercially available industrially pure ruthenium trichloride in 150ml of deionized water, add 5ml of anhydrous low-molecular alcohol (methanol) and fuming hydrochloric acid respectively during the dissolution process, stir vigorously for 30 minutes, and continue stirring after completely dissolving Next, add deionized water continuously, and continue to stir until the pH value of the solution reaches 4.5. Ammonium bicarbonate with a concentration of 0.5M was added to the reaction system by spraying. While continuing to stir the reaction liquid, add 5ml of perchloric acid into the system by spraying, keep stirring the reaction liquid for 30 minutes, let it stand, age for 10 hours, wash with water under reduced pressure and filter for 3 times to obtain a filter cake. The filter cake is blast-dried at 60°C for 6 hours and crushed into fine particles, then placed in a muffle furnace for sintering for 8 hours at a sintering temperature of 175°C, dried at 80...

Embodiment 2

[0015] Dissolve 20g of commercially available commercially pure ruthenium trichloride in 150ml of deionized water, add 8ml of anhydrous low-molecular alcohol (ethylene glycol) and fuming hydrochloric acid respectively during the dissolution process, stir vigorously for 30 minutes, and continue stirring after completely dissolving In the case of continuous addition of deionized water, and continue stirring until the pH value of the solution reaches 5.3. Sodium bicarbonate with a concentration of 0.5M was added to the reaction system by spraying. In the case of continuing to stir the reaction liquid, the reaction system was passed into ozone for 60 minutes and left to stand, aged for 8 hours, washed with water under reduced pressure and filtered for 3 times to obtain a filter cake. The filter cake is blast-dried at 60°C for 6 hours and crushed into fine particles, then placed in a muffle furnace for sintering for 8 hours at a sintering temperature of 145°C, dried at 80°C and the...

Embodiment 3

[0017] Dissolve 10g of commercially available commercially pure ruthenium trichloride in 150ml of deionized water, add 5ml of anhydrous low-molecular alcohol (isopropanol) and fuming hydrochloric acid during the dissolution process, stir vigorously for 30 minutes, and continue stirring after completely dissolving In the case of DI water was added continuously until the pH of the solution reached 6.7. Add ammonium bicarbonate with a concentration of 0.5M to the reaction system by spraying, and add 4ml of hydrogen peroxide to the system by spraying while continuing to stir the reaction liquid, keep stirring the reaction liquid for 30 minutes, let it stand, and age for 10 hours Then wash and filter under reduced pressure for 3 times to obtain a filter cake. The filter cake is blast-dried at 60°C for 6 hours and crushed into fine particles, then placed in a muffle furnace for sintering for 8 hours at a sintering temperature of 160°C, dried at 80°C and then ball-milled to finally o...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a preparation method of a non-stoichiometry ruthenium dioxide electrode material. The preparation method is characterized by including the following steps of strictly controlling a potential of hydrogen (PH) value before synthesis system reaction during preparation of a non-stoichiometry ruthenium dioxide synthesis system; adding reactants; adding oxidizing agents to oxidize simple substance ruthenium remained in the synthesis system into ruthenium dioxide; removing the oxidizing agents and other reaction by-products; and performing pressure-reduction washing and filtering, drying, sintering and ball-milling. Compared with preparation methods in prior art, the preparation method has the advantages that obtained non-stoichiometry ruthenium dioxide electrodes have higher specific capacitance, multiplying power characteristics and cycling stability, and the method can be widely applied to fields of national defense and civil energy storage.

Description

technical field [0001] The invention relates to the field of chemical power sources, in particular to a method for preparing a non-stoichiometric ruthenium dioxide electrode material. Background technique [0002] Super capacitor (Ultra capacitor), also known as "Electrochemical Capacitor (EC)", is a new type of chemical energy storage device between traditional capacitors and batteries. Compared with traditional capacitors, it has higher energy density, and its electrostatic capacity can reach hundreds or even thousands of farads; compared with batteries, it has higher power density and long cycle life, so it combines traditional capacitors and batteries It is a chemical power source with broad application prospects. It has the characteristics of high specific capacity, high power, long life, wide working temperature limit, and maintenance-free. [0003] According to the different energy storage principles, supercapacitors are generally divided into two categories: one is...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/86H01G11/46
Inventor 张熙贵华黎安仲勋杨恩东虞嘉菲
Owner SHANGHAI AOWEI TECH DEV