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

Ordered nanostructure membrane electrode and preparation method thereof

A nanostructure, membrane electrode technology, applied in the direction of nanotechnology, nanotechnology, battery electrodes, etc., can solve the problems of low power density, low catalyst utilization rate, low electrochemical reaction activity of methanol, etc., and achieve the effect of improving catalytic activity

Active Publication Date: 2016-11-23
上海氢锐科技有限公司
View PDF6 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the current passive DMFC still faces some technical difficulties in practical application: (1) Methanol permeates through the diaphragm, which reduces the fuel utilization rate and battery operating voltage; (2) The electrochemical reaction activity of methanol is not high, that is, the utilization of the catalyst (3) Low power density, fuel and oxidant completely rely on free diffusion, it is difficult to stably and evenly transport methanol and oxygen to the surface of the catalyst to participate in the reaction, resulting in poor system performance
Before being officially put into market application, there are still many severe technical challenges

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
  • Ordered nanostructure membrane electrode and preparation method thereof
  • Ordered nanostructure membrane electrode and preparation method thereof
  • Ordered nanostructure membrane electrode and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0051] like figure 1 As shown, the present invention provides a method for preparing an ordered nanostructured membrane electrode applied to a fuel cell, and the method for preparing an ordered nanostructured membrane electrode at least includes the following steps:

[0052] S1, providing a substrate and a porous template, the substrate comprising carbon paper and an electrode microporous layer coated on the carbon paper;

[0053] S2, preparing a binder, and bonding the porous template to the electrode microporous layer through the binder;

[0054] S3, preparing a mixed electroplating solution, and preparing a nano-array on the surface of the electrode microporous layer by electrodeposition;

[0055] S4, post-processing the deposition product, including removing the porous template and the binder, thereby preparing an ordered nano-array catalytic electrode;

[0056] S5, using the ordered nano-array catalytic electrode as a cathode and / or an anode, placing a proton exchange m...

Embodiment 1

[0076] This embodiment provides a method for preparing an ordered platinum nanowire film electrode, comprising the following steps:

[0077] Weighing 20.0mg of carbon nanotubes, 40.4mg of mass fraction of 12.39% polytetrafluoroethylene (PTFE) solution, 200mg of isopropanol (IPA) aqueous solution (IPA:H 2 O=1:1), and after mixing it, sonicate for 120min; use a spatula to smear on carbon paper containing 20% ​​PTFE with a mass fraction of 2.0mg·cm -2 carbon nanotubes; and then sintering at a temperature of 350° C. for 30 minutes to obtain a cathode microporous layer.

[0078] Weigh polyvinylidene fluoride (PVDF) and N-methylpyrrolidone (NMP) to prepare a mixed solution with a mass fraction of PVDF of 8.14%; magnetically stir at 25° C. for 8 hours to obtain a PVDF solution as a binder.

[0079] The PVDF solution that draws about 50.0mg is coated on the described cathode microporous layer and is scraped off with a scraper so that about 32.0mg of PVDF solution is coated on the mic...

Embodiment 2

[0091] This embodiment provides a method for preparing an ordered platinum nanotube membrane electrode, comprising the following steps:

[0092] Weighing 60.0mg of carbon nanotubes, 179.2mg of 8.37% PTFE solution, 600mg of IPA aqueous solution (IPA:H 2 O=1:1), and after mixing it, sonicate for 120min; use a spatula to smear on carbon paper containing 20% ​​PTFE with a mass fraction of 2.0mg·cm -2 carbon nanotubes; and then sintering at a temperature of 350° C. for 30 minutes to obtain a cathode microporous layer.

[0093] PVDF and NMP were weighed, and a mixed solution with a mass fraction of PVDF of 5.28% was prepared; magnetically stirred at 25° C. for 8 hours to obtain a PVDF solution as a binder.

[0094] Draw about 50 mg of PVDF solution and apply it on the cathode microporous layer and scrape it flat with a scraper so that about 32 mg of PVDF solution is applied on the microporous layer, and then bond an AAO template with a double-pass aperture of 200 nm on the cathode ...

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
Diameteraaaaaaaaaa
Login to View More

Abstract

The invention provides an ordered nanostructure membrane electrode and a preparation method thereof. The method comprises the steps of coating of a micropore layer, preparation of a binder, bonding of a porous template and a substrate, preparation of a mixed electroplating solution, preparation of a nano array, post-treatment of a product and lamination of a membrane electrode assembly. The core technology of the preparation method is preparation of an ordered nano array catalyst electrode; a nano-structure containing platinum or a platinum alloy is deposited in a porous template mainly through a template method electrodeposition path; and the porous template and the binder are removed to obtain the one-dimensional ordered nano array catalyst electrode which directly grows on the micropore layer, thereby obtaining the membrane electrode through lamination. The ordered nanostructure can be applied to the membrane electrode assembly without a transfer printing or pressing method. A novel porous electrode structure is provided; the preparation technology of the membrane electrode assembly is innovated; the catalytic activity of the electrode and the utilization rate of a noble metal are greatly improved; and the battery performance can be further greatly improved by applying the ordered nanostructure membrane electrode to a fuel cell.

Description

technical field [0001] The invention relates to the technical field related to fuel cells, and relates to an ordered nanostructured membrane electrode and a preparation method thereof, in particular to an ordered nanostructured membrane electrode applied to a fuel cell and a preparation method thereof. Background technique [0002] With the rapid development of science and technology, a wide variety of portable mobile electronic devices have been born. The increasing power of their functions has directly led to the fact that the capacity of traditional batteries can no longer meet people's power consumption needs for corresponding electronic devices. The portable power bank is imminent. The small size, large capacity, safety and stability of the fuel cell make it superior in the field of mobile power. It can work for a long time by adding fuel, and its energy density is several times that of lithium-ion batteries. In recent years, as the future development trend of new mobi...

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): H01M4/88H01M8/10H01M4/92H01M4/96H01M4/90B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00H01M4/8853H01M4/8896H01M4/9058H01M4/9083H01M4/926H01M4/96H01M8/1004H01M8/1011Y02E60/50
Inventor 袁婷汪艳林杨辉周毅邹志青邹亮亮黄庆红
Owner 上海氢锐科技有限公司
Features
  • Generate Ideas
  • 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