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

PT-M Metal Alloy Catalyst Prepared by Electrodeposition in Organic System

A metal alloy and catalyst technology, applied in the field of Pt-M metal alloy catalyst and its preparation, can solve the problems of limiting the breakthrough of cathode noble metal catalyst, single synthesis method, and limited control method, and achieve the improvement of comprehensive utilization efficiency, enhanced catalytic activity, Effect of Platinum Load Reduction

Active Publication Date: 2021-05-11
SHANGHAI JIAO TONG UNIV
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, traditional chemical synthesis is limited by single synthesis methods and limited control methods for components and morphology, which greatly limits further breakthroughs in cathodic noble metal catalysts.
The electrochemical synthesis method overcomes the limitations of the above-mentioned traditional chemical synthesis method, and has extremely high advantages in controllability, and has been using electrochemical methods to prepare Pt-M alloys with controllable morphology in organic electrolyte systems. Catalyst research is rarely reported, and has considerable development prospects

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
  • PT-M Metal Alloy Catalyst Prepared by Electrodeposition in Organic System
  • PT-M Metal Alloy Catalyst Prepared by Electrodeposition in Organic System
  • PT-M Metal Alloy Catalyst Prepared by Electrodeposition in Organic System

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055]The preparation step of the PT-M metal alloy nanoparticle catalyst having a high catalytic performance is as follows:

[0056]1. Adopting the corresponding reagent in accordance with certain quality, the PT source is chloroplatinic acid, the M metal source is acetylacetonate precursor salt, supporting the electrolyte as potassium perchlorate, and an inert gas N2, The mixture is added to a certain amount of organic solvent DMF and mix well is thoroughly stirred;

[0057]2. Add the above mixed liquid to molecular sieve water;

[0058]3. The above reaction product is ultrasound for 3 minutes to disperse uniform;

[0059]4, the electrochemical device, the electrode is deposited under different deposition potentials of -1.5V to -2.2V; the scan rate is 25 mV / s, and circulating volt-amu electrochemical cleaning is performed between 0.55V.

[0060]6, using constant current electrodeposition method, constant potential electrodeposition method, circulating volt-amplification method, one or more comb...

Embodiment 2

[0066]The preparation of the preparation step of the PT-M metal alloy nanoparticle catalyst having high catalytic performance in this embodiment is in the case of:

[0067]1. Electronic balance is used in accordance with a certain quality of the reagent, the PT source is chloroplatinic acid, the M metal source is acetylacetone nickel precursor salt, supporting the electrolyte as potassium oleginate, an inert gas N2, The mixture is added to a certain amount of organic solvent DMF and mix well is thoroughly stirred;

[0068]2. Add the above mixed liquid to molecular sieve water;

[0069]3. The above reaction product is ultrasound for 3 minutes to disperse uniform;

[0070]4, the electrochemical device, the electrode is deposited under different deposition potentials of -1.5V to -2.2V; the scan rate is 25 mV / s, and circulating volt-amu electrochemical cleaning is performed between 0.55V.

[0071]6, using constant current electrodeposition method, constant potential electrodeposition method, circula...

Embodiment 3

[0077]The preparation of the preparation step of the PT-M metal alloy nanoparticle catalyst having high catalytic performance in this embodiment is in the case of:

[0078]1. Electronic balance is used according to a certain quality, the PT source is chloroplatinic acid, the M metal source is acetylacetone nickel precursor salt, and the electrolyte is tetrabutylavadic chloride, and an inert gas N2, The mixture is added to a certain amount of organic solvent DMF and mix well is thoroughly stirred;

[0079]2. Add the above mixed liquid to molecular sieve water;

[0080]3. The above-mentioned reaction product is ultrasound for 0.5 minutes to disperse uniform;

[0081]4, the electrochemical device, the electrode is deposited under different deposition potentials of -1.5V to -2.2V; the scan rate is 5 mV / s, and circulating volt-amu electrochemical cleaning is performed between 0.3V.

[0082]6, using constant current electrodeposition method, constant potential electrodeposition method, circulating vol...

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 diameteraaaaaaaaaa
diameteraaaaaaaaaa
particle diameteraaaaaaaaaa
Login to View More

Abstract

The invention discloses a Pt-M metal alloy catalyst prepared by electrodeposition in an organic system; the conductive carrier of the catalyst is carbon-based; and the Pt-M metal alloy prepared by co-deposition of Pt-M metal in an organic solvent Alloy nanoparticles are uniformly dispersed on the surface of the carrier in the form of physical loading. During the preparation process, the Pt source precursor and the M source precursor are dissolved in an organic solvent, and the volume molar concentration of the metal precursor in the mixed solution is 1-20 mmol / L. In addition, the oxygen in the solution is excluded under the protection of an inert atmosphere, subsequent deposition is performed at different deposition potentials, and cyclic voltammetry electrochemical cleaning is performed. Through the scheme of the present invention, the further reduction of the platinum loading and the enhancement of the catalytic activity of the prepared Pt-M metal alloy nanoparticle catalyst can be achieved, the comprehensive utilization efficiency of precious metals is greatly improved, and the oxygen reduction activity is improved, reducing the Targets such as comprehensive cost of noble metal catalysts.

Description

Technical field[0001]The present invention relates to the field of nanomaterials, electrochemical techniques, and fuel cell catalysts, and more particularly to a PT-M metal alloy catalyst prepared by electrodeposition of an organic system and a preparation method thereof.Background technique[0002]Due to the high energy conversion efficiency, no environmental pollution, low noise, good reliability, etc., the fuel cell has evolved into a new potential new energy technology. However, large-scale applications in automobiles, distributed power generation and portable electronic fields still have many obstructions, in which the high cost of cathode catalyst is the most important challenge. Although non-platinum catalysts have great advantages in cost, their catalytic activity and stability are still equivalent to the platinum-based catalyst. As far as it is currently, the development of new low-platinum high performance catalysts is still the only way to realize the commercialization of p...

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 Patents(China)
IPC IPC(8): H01M4/92H01M12/08B82Y30/00
CPCB82Y30/00H01M4/921H01M4/926H01M12/08Y02E60/10
Inventor 章俊良李凡沈水云范月恒赵路甜郭杨格
Owner SHANGHAI JIAO TONG 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