Check patentability & draft patents in minutes with Patsnap Eureka AI!

Cobalt-molybdate-based composite electrocatalyst and preparation method thereof

An electrocatalyst, cobalt molybdate technology, applied in the direction of chemical instruments and methods, organic compound/hydride/coordination complex catalyst, physical/chemical process catalyst, etc., can solve the problem of accelerating electron transfer rate and achieve good electrical Catalytic performance, good stability, mild condition effect

Active Publication Date: 2018-02-23
湖南信力新材料有限公司
View PDF0 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Combining molybdate with ZIF-67 can effectively accelerate the electron transfer rate and improve the oxygen evolution activity of the catalyst. So far, there has been no report of this kind 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
  • Cobalt-molybdate-based composite electrocatalyst and preparation method thereof
  • Cobalt-molybdate-based composite electrocatalyst and preparation method thereof
  • Cobalt-molybdate-based composite electrocatalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Example 1: CoMoO 4 Preparation of nanorods:

[0022] Weigh 2mmol Co(NO 3 ) 2 ·6H 2 O and 2 mmol Na 2 MoO 4 2H 2 Add deionized water to O in a beaker, stir magnetically until it is completely dissolved, add the resulting transparent pink solution into a polytetrafluoroethylene reactor, and react at 80-120°C for 6-8h. After naturally cooling to room temperature, the samples were collected by centrifugation, washed several times with deionized water and ethanol, and dried.

Embodiment 2

[0023] Embodiment 2: the preparation of ZIF-67 sample:

[0024] Weigh 1mmol Co(NO 3 ) 2 ·6H 2 O and 4mmol 2-methylimidazole were placed in two beakers, methanol was added to each, stirred until completely dissolved, and then the transparent solution containing 2-methylimidazole was quickly added to the solution containing Co(NO 3 ) 2 ·6H 2 In the pink solution of O, let it stand and age for 24 hours after stirring evenly. Collected by centrifugation, washed several times with ethanol, and dried.

Embodiment 3

[0025] Embodiment 3: Preparation of 5% ZIF-67 / cobalt molybdate composite material:

[0026] With the CoMoO obtained in embodiment 1 4 Weigh the ZIF-67 obtained in Example 2 at a mass ratio of 19:1, add deionized water and stir until completely dissolved, ultrasonically until uniformly dispersed, and then add the resulting dispersion into a polytetrafluoroethylene reactor , 80-120°C for 6-12h. After naturally cooling to room temperature, it was collected by centrifugation, washed with water and alcohol several times, dried and ground to obtain 5% ZIF-67 / CoMoO 4 sample.

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 relates to a ZIF-67 / cobalt molybdate electrolyzed water oxygen evolution electrocatalyst and a preparation method thereof, and belongs to the technical field of electrocatalysts. The method comprises the steps that CoMoO4 and ZIF-67 are weighed and added into deionized water, stirring is conducted till the mixture is completely dissolved, ultrasonic treatment is conducted till the mixture is dispersed uniformly, the obtained dispersion liquid is added into a reaction kettle of polytetrafluoroethylene, and a hydrothermal reaction is performed. After natural cooling is conducted toreach the room temperature, centrifugal collection is conducted, water washing and ethanol washing are conducted multiples times, after drying is conducted, grinding is conducted, and a ZIF-67 / CoMoO4sample is obtained. Accordingly, the advantages that cobalt molybdate has good stability and many active sites are fully utilized, after compounding ZIF-67, the specific surface area of the sample isincreased, the stability is further improved, oxygen evolution is facilitated, and the good electrocatalytic property is showed.

Description

technical field [0001] The invention relates to a ZIF-67 / cobalt molybdate electrolysis oxygen evolution electrocatalyst and a preparation method thereof, belonging to the technical field of electrocatalysts. Background technique [0002] In recent years, human development is facing a severe energy crisis and environmental pollution problems. The production of hydrogen and oxygen through electrolysis of water can effectively alleviate the current crisis. However, due to the slow kinetics of the oxygen evolution reaction, the efficiency of water electrolysis is severely restricted, so finding an efficient oxygen evolution electrocatalyst becomes the key to improving the efficiency. The most active electrocatalyst for oxygen evolution is IrO 2 and RuO 2 , but due to the scarcity and high price of these precious metal materials, it is not conducive to large-scale production. Therefore, it is urgent to develop efficient, stable and practical non-precious metal catalysts to rep...

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): B01J31/34C25B1/04C25B11/04
CPCC25B1/04B01J31/34C25B11/095B01J35/33Y02E60/36
Inventor 陈敏徐艳姜德立
Owner 湖南信力新材料有限公司
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com