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Preparation method of ruthenium dioxide

A ruthenium dioxide, preparation process technology, applied in chemical instruments and methods, inorganic chemistry, ruthenium/rhodium/palladium/osmium/iridium/platinum oxide/hydroxide, etc., can solve the difference in the electrochemical performance of ruthenium oxide, etc. problem, achieve high redox reversibility, excellent conductivity, and simple preparation method

Inactive Publication Date: 2018-12-18
信阳学院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The electrochemical properties of ruthenium oxide prepared by different methods are different

Method used

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  • Preparation method of ruthenium dioxide
  • Preparation method of ruthenium dioxide

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Experimental program
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Embodiment 1

[0020] A kind of ruthenium dioxide, its morphology is observed by scanning electron microscope and transmission electron microscope, and its microscopic morphology is observed to be completely consistent with the morphology of ruthenium oxide mentioned in related literature.

[0021] from figure 1 It can be seen from the scanning electron microscope photo of ruthenium dioxide that ruthenium dioxide has a granular microscopic appearance at a scale of 1.0 microns; from figure 2 The transmission electron micrograph of the ruthenium dioxide can be seen that, under the scale bar of 0.2 micron, the ruthenium dioxide is granular and obviously has a hollow microscopic morphology.

Embodiment 2

[0023] The present invention also provides a kind of preparation method of ruthenium dioxide, comprises the following steps:

[0024] Step S1: Rucl 3 A solution is prepared, and the solution is used as a solution precursor for a hydrothermal reaction; step S2: the solution is transferred to the lining of the reactor for hydrothermal reaction.

[0025] Preferably, in the step S1, the preparation of the solution has the following data: Rucl 3 The mass is 1 gram, and the solvent is 50 milliliters, which contains: 25 milliliters of absolute ethanol and 25 milliliters of deionized water.

[0026] Preferably, in the step S1, it is characterized in that: the solution prepared according to the data needs to be subjected to ultrasound for 15 minutes and magnetic stirring for 1 hour. Then add 0.2mol / L of NH 4 HCO 3 Adjust the pH value of the solution to make it reach 7-8, while adding a small amount of acetic acid.

[0027] Preferably, in the step S2, the hydrothermal reaction time...

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Abstract

The invention discloses a preparation method of ruthenium dioxide, comprising preparation and characterization. The preparation process is performed with a certain ratio and method by using agents such as ethanol, Rucl3 and NH4HCO3, and then performing hydrothermal reaction for a certain period of time to obtain ruthenium dioxide; the characterization means characterizing the morphology of an obtained sample by SEM and TEM, wherein results are compared with related literature data. The preparation method of the ruthenium dioxide has the advantages that firstly a hydrothermal method is adoptedfor preparation, and is rare in the previous work; secondly, the type and proportion of the agents are adjusted and the reaction time is adjusted, thus greatly simplifying the experimental process andimproving the experimental results. Through the adjusting experimental parameters, the ruthenium dioxide with good microscopic morphology is obtained. The hydrothermal reaction method is adopted, theoperation process is simple, safe, and easy to control, the time is short, the raw materials are easy to obtain, the cost is low, and the prepared cerium oxide has ultra-high purity and good electrochemical performance.

Description

technical field [0001] The invention relates to a preparation method of ruthenium dioxide. Background technique [0002] The increasing scarcity of fossil energy resources and the deteriorating environment have resulted in various social problems. The development of renewable clean energy and the improvement of energy utilization are one of the effective ways to solve these problems. In the process of developing renewable clean energy and improving energy utilization, energy storage devices with low cost, environmental friendliness and high energy density are essential, which makes energy device technologies such as supercapacitors particularly important. In recent years, supercapacitors have received great attention from researchers due to their high power density and excellent cycle stability. The electrode material is a key factor affecting the performance of supercapacitors. [0003] Ruthenium dioxide has the advantages of ultra-high mass specific capacitance, excellen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G55/00
CPCC01G55/004C01P2004/03C01P2004/04
Inventor 高延利董玉静王超群
Owner 信阳学院