A cobalt-coated carbon-supported platinum catalyst with proton transport function and preparation method thereof

A technology of platinum catalyst and coated carbon, which is applied in nanotechnology, structural parts, electrical components, etc. for materials and surface science, and can solve problems affecting the utilization rate of catalysts, etc.

Active Publication Date: 2021-05-14
中能源工程集团氢能科技有限公司 +1
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the catalytic layer prepared by Pt / C catalyst and proton exchange solution (such as Nafion D520), the ionic phase (such as Nafion polymer) is in the state of disordered nano-film, and most of the ion exchange resin covers the Pt surface. or no coverage, which strongly affects the three-phase reaction interface (simultaneously possessing electrons, protons and gas transport channels) and the utilization rate of the catalyst in the catalytic layer, in fact, the actual utilization rate of the Pt catalyst is less than 40%

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
  • A cobalt-coated carbon-supported platinum catalyst with proton transport function and preparation method thereof
  • A cobalt-coated carbon-supported platinum catalyst with proton transport function and preparation method thereof
  • A cobalt-coated carbon-supported platinum catalyst with proton transport function and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] 1. Dissolve 1g of EC-300 carbon black carrier in 10ml of an aqueous solution of melamine with a concentration of 0.03g / mL, soak it for 10h, dry it in a vacuum oven at 80°C for 15h, and place it under N 2 Heat treatment at 500°C for 2 hours under atmosphere, and grind for later use.

[0039] 2. Using the Electroless Plating Method to Analyze Pure CoSO 4 .7H 2 O, CoCl 2 .6H 2 O as cobalt source, hydrazine hydrate as reducing agent, adding PdCl 4 As an activator, it increases the encapsulation rate. During the coating process, KOH is used as the dispersant, and the pH is preferably controlled at 12.5. The ratio of alkali to hydrazine is 6:1, and the reaction temperature is controlled at 89 °C. A layer of Co-coated C@Co core-shell structure is prepared on the surface of the above-mentioned doped carbon black.

[0040] 3. Take 0.18g of the treated C@Co core-shell particles and place them in an autoclave, add perfluoro 3,6-dioxa-4-methyl-7-octenesulfonyl fluoride (PSVE)...

Embodiment 2

[0057] 1. Dissolve 1g of XC-72 carbon black carrier in 15ml of melamine aqueous solution with a concentration of 0.03g / mL, soak it for 10h, dry it in a vacuum oven at 80°C for 15h, and place it under N 2 Heat treatment at 500°C for 2 hours under atmosphere, and grind for later use.

[0058] 2. Using the Electroless Plating Method to Analyze Pure CoSO 4 .7H 2 O, CoCl 2 .6H 2 O as cobalt source, hydrazine hydrate as reducing agent, adding PdCl 4 As an activator, it increases the encapsulation rate. During the coating process, KOH was used as the dispersant, and the pH was controlled at 1.2. The ratio of alkali to hydrazine is 5:1, and the reaction temperature is controlled at 90 °C. A core-shell structure of Co-coated layer C@Co is prepared on the surface of the above-mentioned doped carbon black.

[0059] 3. Take 0.12g of the treated C@Co core-shell structure and place it in an autoclave, add the aqueous solution of perfluoro 3,6-dioxa-4-methyl-7-octenesulfonyl fluoride m...

Embodiment 3

[0068] 1. Dissolve 1g of EC-300 carbon black carrier in 20mL of an aqueous solution of pyridine with a concentration of 0.05g / mL, soak it for 10h, dry it in a vacuum oven at 80°C for 15h, and place it under N 2 Heat treatment at 500°C for 2 hours under atmosphere, and grind for later use.

[0069] 2. Using the Electroless Plating Method to Analyze Pure CoSO 4 .7H 2 O, CoCl 2 .6H 2 O as cobalt source, hydrazine hydrate as reducing agent, adding PdCl 4 As an activator, it increases the encapsulation rate. During the coating process, KOH is used as the dispersant, and the pH is preferably controlled at 12.5. The ratio of alkali to hydrazine is 6:1, and the reaction temperature is controlled above 85°C. A layer of Co-coated C@Co core-shell structure is prepared on the surface of the above-mentioned doped carbon black.

[0070] 3. Take 0.12g of the treated core-shell structure of the Co coating layer C@Co and place it in an autoclave, add perfluoro 3,6-dioxa-4-methyl-7-octene...

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
specific surface areaaaaaaaaaaa
sizeaaaaaaaaaa
concentrationaaaaaaaaaa
Login to view more

Abstract

The invention discloses a cobalt-coated carbon-supported platinum catalyst Pt / (C@Co) with proton transport function and a preparation method thereof. The method comprises the following steps: (1) using nitrogen source or sulfur source ionic liquid to infiltrate graphite ene to obtain heteroatom-doped carbon black; (2) Prepare a layer of Co cladding layer C@Co core-shell structure on the surface of heteroatom-doped carbon black by electroless plating method; (3) The obtained C@Co The core-shell structure is polymerized with sulfonyl monomer, tetrafluoroethylene, additives, initiators, and organic solvents, and an appropriate amount of perfluoroSO is wound on the C@Co sphere 2 F macromolecule; (4) gained product is hydrolyzed, makes SO 2 F group converted to SO 3 ‑ Na + / K + Ion-exchange groups; (5) Mix the resulting product with platinum precursor solution, water, and ethylene glycol, and perform ultrasonic treatment; (6) Place the resulting mixed solution in a microwave reactor and heat it for reaction; (7) After the reaction is completed, Make the obtained colloidal system demulsify, filter; (8) Post-treatment.

Description

technical field [0001] The invention belongs to the technical field of new energy and fuel cells, and in particular relates to a cobalt-coated carbon-supported platinum catalyst with proton transport function and a preparation method thereof. Background technique [0002] Energy is a material resource that provides various capabilities and power for human production and life, and is an important material foundation of the national economy. With the development of the economy, the energy crisis is becoming more and more serious. Energy issues have become a major problem facing the world today. New energy Materials and how they are used are increasingly important. Fuel cell is an efficient and clean electrochemical power generation device. Proton exchange membrane fuel cell has a broad application prospect due to its advantages of high energy conversion efficiency, no pollution, simple system structure, high energy density and convenient fuel portability. [0003] Platinum ca...

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): H01M4/92B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00H01M4/925H01M4/926Y02E60/50
Inventor 刘畅王诚穆怀萍张向东王建龙
Owner 中能源工程集团氢能科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap