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

Grinding preparation method and application of polyoxometallate-metal organic framework material

A metal-organic framework and polyoxometalate technology, which is applied in the manufacture of hybrid/electric double-layer capacitors and hybrid capacitor electrodes, can solve the problems of repeated synthesis instability, small active area, and low production yield, and achieve stability Electrochemical performance, simple method, good repeatability

Active Publication Date: 2019-11-12
HARBIN NORMAL UNIVERSITY
View PDF2 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the existing polyoxometalate-metal-organic framework (POMOFs) as the electrode active material of supercapacitor and there is the problem of low preparation yield, unstable repeated synthesis, small active area and weak conductivity, and then Provide a grinding preparation method and application of polyoxometalate-metal organic framework material

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
  • Grinding preparation method and application of polyoxometallate-metal organic framework material
  • Grinding preparation method and application of polyoxometallate-metal organic framework material
  • Grinding preparation method and application of polyoxometallate-metal organic framework material

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0034] Specific embodiment 1: In this embodiment, a polyoxometalate-metal organic framework material, the molecular formula of the polyoxometalate-metal organic framework material is {Ag 6 Mo 7 o 24} @Ag-BTC.

specific Embodiment approach 2

[0035] Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is: a grinding preparation method of polyoxometalate-metal organic framework material, which is completed according to the following steps:

[0036] 1. Add AgNO sequentially in distilled water 3 and (NH 4 ) 6 Mo 7 o 24 4H 2 O, and stirred to dissolve to obtain product A; the AgNO 3 with (NH 4 ) 6 Mo 7 o 24 4H 2 The molar ratio of O is (5.5~7):(0.5~2);

[0037] 2. Adjust the pH of product A to 3.5-4.5 under stirring conditions, and continue stirring for 1h-2h to obtain product B;

[0038] 3. After the product B obtained in step 2 is completely evaporated, powder C is obtained, and powder C is mixed with trimesic acid, silver nitrate and absolute ethanol for 20min to 40min to obtain product D; The mol ratio of triformic acid is (1~2):(1.5~2.5), the mol ratio of described powder C and silver nitrate is (1~2):(0.5~2), the mol ratio of described powder C and dehydrated alcohol...

specific Embodiment approach 3

[0047] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is: the AgNO described in step one 3 with (NH 4 ) 6 Mo 7 o 24 4H 2 The molar ratio of O is 5.5:0.5.

[0048] Other steps are the same as those in Embodiment 1 or 2.

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

A grinding preparation method and application of a polyoxometallate-metal organic framework (POMOF) material relate to the technical field of electrode materials and aim to solve the problem that a conventional POMOF used as the electrode active matter of a supercapacitor is low in production yield, unstable in repeated synthesis, small in active area, and low in electrical conductivity. The method comprises adding AgNO3 and (NH4)6Mo7O24.4H2O to distilled water; stirring the mixture to dissolve the added objects; adjusting a pH value to 3.5 to 4.5; evaporating the mixture; mixing and grindingthe mixture with trimesic acid, silver nitrate andabsolute ethyl alcohol; and finally cleaning and drying a product to obtain a {Ag6Mo7O24}@Ag-BTC material. The {Ag6Mo7O24}@Ag-BTC material is used asthe electrode material of the supercapacitor. The invention can obtain a grinding preparation method and application of a POMOF material.

Description

technical field [0001] The invention relates to the technical field of electrode materials. Background technique [0002] Supercapacitors because of their high power density (up to 10kW kg -1 ), high capacity, long cycle life, and less environmental pollution, has become the focus of attention. High specific capacitance means better electrochemical performance and stronger energy storage capacity. Therefore, in order to develop supercapacitors with good performance, it is most important to develop electrode materials that can improve the specific capacitance of supercapacitors. Polyoxometallate-metal-organic frameworks (POMOFs), as a class of structurally well-defined inorganic building blocks, combine the functional properties of metal-organic frameworks with those of polyoxometalates (POM S ) combined with rich physicochemical properties. Due to its strong functionality, porosity, and large specific surface area, it has attracted more and more attention. The design an...

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): H01G11/30H01G11/86
CPCH01G11/30H01G11/86Y02E60/13
Inventor 赵新钰周百斌宫丽阁于凯吕菁华
Owner HARBIN NORMAL UNIVERSITY
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