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

Method for preparing bifunctional ternary metal hydroxynitride electrocatalyst by using waste lithium cobalt oxide

A ternary metal and nitride electrolytic technology, which is applied in the field of waste resource utilization and catalytic chemistry, can solve the problems of waste of useful resources, increase of disposal costs, inability to realize recycling and value-added of waste materials, etc.

Pending Publication Date: 2021-04-09
派尔森环保科技有限公司
View PDF2 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the limitation of battery material life, its decommissioning period is gradually approaching, and a large number of waste lithium-ion batteries are facing the problem of disposal after decommissioning
Because there are recyclable metals (such as cobalt, etc.) in the waste electrode materials, if they are directly discarded and disposed of as hazardous waste, on the one hand, the cost of disposal will be increased, and on the other hand, it will directly cause a waste of useful resources, and it will not be possible to realize waste disposal. The effect of material recycling and value-added

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
  • Method for preparing bifunctional ternary metal hydroxynitride electrocatalyst by using waste lithium cobalt oxide
  • Method for preparing bifunctional ternary metal hydroxynitride electrocatalyst by using waste lithium cobalt oxide
  • Method for preparing bifunctional ternary metal hydroxynitride electrocatalyst by using waste lithium cobalt oxide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] A method for preparing a bifunctional ternary metal oxynitride electrocatalyst by using waste lithium cobaltate is carried out in sequence according to the following steps:

[0045] (11) Sieve the lithium cobalt oxide positive electrode material recovered from the waste lithium-ion battery after crushing, take the undersieve, grind the undersieve into powder, pass through a 400-mesh sieve, soak in 3M dilute hydrochloric acid for 5 hours, and take The supernatant is marked as A;

[0046] (12) Add a certain amount of sodium hydroxide solution to A until the pH value of the solution is 7 to obtain B;

[0047] (13) Add 100mM ferric nitrate solution and 5mL of ethanol to B in sequence to obtain C;

[0048] (14) Put aluminum foam with a diameter of 1cm×1cm (thickness 0.01cm) into C, use aluminum foam as the working electrode, and use C as the reaction solution, soak the foamed aluminum on the surface of the C solution, and treat it under a nitrogen atmosphere at the same tim...

Embodiment 2

[0052] A method for preparing a bifunctional ternary metal oxynitride electrocatalyst by using waste lithium cobaltate is carried out in sequence according to the following steps:

[0053] (21) Sieve the waste lithium cobaltate cathode material after crushing, take the undersieve, grind the undersieve into powder, pass through a 400 mesh sieve, soak in 6M dilute hydrochloric acid for 3 hours, take the supernatant and record it as A ;

[0054] (22) Add a certain amount of sodium hydroxide solution to A until the pH value of the solution is 7 to obtain B;

[0055] (23) Add 150mM ferric nitrate solution and 8mL of ethanol to B in sequence to obtain C;

[0056] (24) Put aluminum foam (thickness 0.01cm) with a diameter of 1cm×1cm into C, use aluminum foam as the working electrode, and use C as the reaction solution, soak the foamed aluminum on the surface of the C solution, and treat the Aluminum foam is subjected to plasma discharge at a voltage of 50V for 120s, so that electroc...

Embodiment 3

[0060] A method for preparing a bifunctional ternary metal oxynitride electrocatalyst by using waste lithium cobaltate is carried out in sequence according to the following steps:

[0061] (31) Sieve the waste lithium cobaltate positive electrode material after crushing, take the undersieve, grind the undersieve into powder, pass through a 400 mesh sieve, soak in 5M dilute hydrochloric acid for 8 hours, take the supernatant and record it as A ;

[0062] (32) Add a certain amount of sodium hydroxide solution to A until the pH value of the solution is 7 to obtain B;

[0063] (33) Add 110mM ferric nitrate solution and 10mL of ethanol to B in turn to get C;

[0064] (34) Put aluminum foam with a diameter of 1cm×1cm (thickness 0.01cm) into C, use aluminum foam as the working electrode, and use C as the reaction solution, soak the foamed aluminum on the surface of the C solution, and at the same time under nitrogen atmosphere Plasma discharge the aluminum foam at a voltage of 50V ...

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

PropertyMeasurementUnit
particle size (mesh)aaaaaaaaaa
thicknessaaaaaaaaaa
particle diameteraaaaaaaaaa
Login to View More

Abstract

The invention discloses a method for preparing a bifunctional ternary metal hydroxynitride electrocatalyst by using waste lithium cobalt oxide, which comprises the steps of (1) pulverizing a waste lithium cobalt oxide positive electrode material, screening, grinding the undersize product into powder, soaking in diluted hydrochloric acid, and recording the supernatant as A; (2) adding a sodium hydroxide solution into the solution A until the pH value of the solution is 7 to obtain a solution B; (3) respectively adding a ferric nitrate solution and ethanol into the solution B to obtain a solution C; (4) putting foamed aluminum with the diameter of 1cm*1cm into the solution C, soaking the foamed aluminum on the surface of the solution C by taking the foamed aluminum as a working electrode and the solution C as a reaction solution, and performing plasma discharge on the foamed aluminum in a nitrogen atmosphere so as to generate chemical reaction on the surface; and (5) washing the self-supporting electrode, and carrying out vacuum drying to obtain the bifunctional ternary metal hydroxynitride electrocatalyst. The method is simple, the whole production process is simple, conditions are mild, the process is easy to control, cost is low, and the method is suitable for large-scale production.

Description

technical field [0001] The invention belongs to the fields of waste resource utilization and catalytic chemistry, and relates to a preparation method of a bifunctional electrocatalyst, in particular to a method for preparing a bifunctional ternary metal oxynitride electrocatalyst by using waste lithium cobaltate. Background technique [0002] Renewable electricity-driven electrocatalytic water splitting has been considered as the most promising way to produce clean hydrogen fuels from abundant water resources, support energy security and reduce emissions. The key to the large-scale application of electrolyzed water is how to reduce the overpotential of the anode oxygen evolution reaction (OER) and cathode hydrogen evolution reaction (HER), so as to realize hydrogen production at a high current at low potential, thereby reducing power consumption and hydrogen production cost. Studies have shown that noble metals such as Ru, Ir, Pt and their oxides have the best hydrogen evolu...

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): C25B11/091C25B1/04
CPCC25B1/04Y02E60/36
Inventor 李虎林李毅蔡建荣杜佳郑成王宇魏海滨杨霄
Owner 派尔森环保科技有限公司
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