Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Preparation method of cobalt molybdate hollow microsphere electrocatalyst

A technology of hollow microspheres and electrocatalysts, applied in chemical instruments and methods, physical/chemical process catalysts, cobalt compounds, etc., can solve the problems of scarce resources and high prices of noble metal oxygen evolution electrocatalysts, achieve efficiency and reduce use costs Effect

Active Publication Date: 2018-12-18
YANGZHOU UNIV
View PDF7 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems of rare metal oxygen evolution electrocatalysts such as resource scarcity and high price, the object of the present invention is to provide a cobalt molybdate (CoMoO 4 ) preparation method of hollow microsphere electrocatalyst, which improves the separation efficiency of electrolyzed water and reduces the use cost of electrocatalyst

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method of cobalt molybdate hollow microsphere electrocatalyst
  • Preparation method of cobalt molybdate hollow microsphere electrocatalyst
  • Preparation method of cobalt molybdate hollow microsphere electrocatalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] In the first step, weigh 1mmol (290mg) of cobalt nitrate, 1mmol (240mg) of sodium molybdate, and 4mmol (820mg) of anhydrous sodium acetate, each of which is fully dissolved in 10ml of deionized water. First, the sodium molybdate aqueous solution is slowly added to the cobalt nitrate In the aqueous solution, and assisted by magnetic stirring, the aqueous solution of sodium acetate is slowly added to the above-mentioned mixed solution of sodium molybdate and cobalt nitrate, and the mixed solution of these three reactants is magnetically stirred at room temperature for 0.5h, and finally The reactant solution was transferred to a 50ml polytetrafluoroethylene reactor. The volume of the reactant solution was 60% of the volume of the reactor. O C sealed heating for 20h, after the reactor is naturally cooled to room temperature, the solid precipitate in the reactor is taken out, and cleaned with deionized water and alcohol, and then the cleaned sample is heated at 60 O After dryi...

Embodiment 2

[0024] In the first step, weigh 1mmol (290mg) of cobalt nitrate, 1mmol (240mg) of sodium molybdate, and 4mmol (820mg) of anhydrous sodium acetate, each of which is fully dissolved in 10ml of deionized water. First, the sodium molybdate aqueous solution is slowly added to the cobalt nitrate In the aqueous solution, and assisted by magnetic stirring, the aqueous solution of sodium acetate is slowly added to the above-mentioned mixed solution of sodium molybdate and cobalt nitrate, and the mixed solution of these three reactants is magnetically stirred at room temperature for 0.5h, and finally The reactant solution was transferred to a 50ml polytetrafluoroethylene reactor. The volume of the reactant solution was 60% of the volume of the reactor. O C sealed heating for 20h, after the reactor is naturally cooled to room temperature, the solid precipitate in the reactor is taken out, and cleaned with deionized water and alcohol, and then the cleaned sample is heated at 60 O After dryi...

Embodiment 3

[0027] In the first step, weigh 1mmol (290mg) of cobalt nitrate, 1mmol (240mg) of sodium molybdate, and 4mmol (820mg) of anhydrous sodium acetate, each of which is fully dissolved in 10ml of deionized water. First, the sodium molybdate aqueous solution is slowly added to the cobalt nitrate In the aqueous solution, and assisted by magnetic stirring, the aqueous solution of sodium acetate is slowly added to the above-mentioned mixed solution of sodium molybdate and cobalt nitrate, and the mixed solution of these three reactants is magnetically stirred at room temperature for 0.5h, and finally The reactant solution was transferred to a 50ml polytetrafluoroethylene reactor. The volume of the reactant solution was 60% of the volume of the reactor. O C sealed heating for 20h, after the reactor is naturally cooled to room temperature, the solid precipitate in the reactor is taken out, and cleaned with deionized water and alcohol, and then the cleaned sample is heated at 60 O After dryin...

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 discloses a preparation method of a cobalt molybdate hollow microsphere electrocatalyst, and the method comprises the following steps: respectively weighing cobalt nitrate, sodium molybdate and anhydrous sodium acetate, adding deionized water, stirring the cobalt nitrate, the sodium molybdate and the anhydrous sodium acetate until the cobalt nitrate, the sodium molybdate and the anhydrous sodium acetate are completely dissolved to obtain a mixture, hydrothermally reacting the mixture, after the reaction is completed, washing and drying a sample; performing high-temperature heat treatment on the dried sample in an air atmosphere to obtain a cobalt molybdate hollow microsphere sample. The method improves the separation efficiency of electrolyzed water and reduces the use cost of the electrocatalyst.

Description

Technical field [0001] The invention belongs to the technical field of nano material synthesis, and specifically relates to a method for preparing cobalt molybdate hollow microspheres at low cost. Background technique [0002] In view of the increasingly serious energy crisis and environmental pollution, the development of sustainable clean energy is urgently needed. The development of green energy hydrogen is conducive to alleviating the current energy and environmental crisis. The electrocatalyst splitting water to produce hydrogen is considered one of the effective ways to produce hydrogen. As the main production method of hydrogen energy, electrolyzed water usually includes two half-reactions, namely hydrogen production and oxygen production. The bottleneck of electrolyzed water is mainly the slow kinetics of the anode oxygen evolution reaction (OER), which leads to the production of hydrogen from electrolyzed water. The conversion efficiency of water is low, and the search ...

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
IPC IPC(8): B01J23/882B01J35/02B01J35/08C01G51/00C25B1/04C25B11/04
CPCC25B1/04C25B11/04C01G51/00B01J23/882C01P2004/34C01P2004/03C01P2002/72C01P2002/01C01P2004/60B01J35/40B01J35/33B01J35/51Y02E60/36
Inventor 周玉雪张伟章泽臣陈璐盛琛飞周敏
Owner YANGZHOU UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com