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

Preparation method of irregularly-shaped direct ethanol fuel cell negative electrode support body material

A fuel cell cathode and support technology, which is applied to fuel cell parts, sealing/supporting devices, chemical instruments and methods, etc., can solve problems such as difficulty in meeting market needs, reducing shrinkage and deformation, easy deformation and cracking, etc.

Active Publication Date: 2019-10-18
郭峰
View PDF5 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing problems are: due to the self-sintering properties of mesocarbon microspheres, the particles fuse during the sintering process to form a sintered body, the pores after sintering fuse, the small pores fuse to form large pores, and sintering necks appear. It is easy to be deformed and cracked; graphite is added to reduce shrinkage and deformation, and the cathode support made of it has a short service life and is difficult to meet market needs. Therefore, a new material that can replace mesophase carbon microspheres and graphite is needed. Preparation of cathode support

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Embodiment 1, a preparation method of a heterogeneous direct ethanol fuel cell cathode support material mentioned in the present invention comprises the following steps:

[0024] 1. Prepare 6000 parts of 0.1mol / L SnCl respectively 4 Solution, 8000 parts of 0.2mol / L NaBH 4 Solution, 15000 parts of 0.05mol / L polyethylene glycol 600 solution, put the prepared polyethylene glycol 600 solution into the reaction kettle with a centrifugal pump, control the temperature of the kettle at 40-50°C, turn on the stirring motor to stir, the stirring speed 450r / min, the prepared 0.1mol / L SnCl 4 The solution is poured into the reaction kettle with a centrifugal pump and mixed with polyethylene glycol 600 solution, and NaBH is sprayed into the reaction kettle at an addition rate of 200 liters / minute. 4solution, after the injection is completed, control the reaction time for 3.5-4 hours, gray precipitates are produced in the reaction kettle, and the mixed solution in the reaction kettle...

Embodiment 2

[0033] Embodiment 2, the preparation method of a heterogeneous direct ethanol fuel cell cathode support material mentioned in the present invention comprises the following steps:

[0034] 1. Prepare 5500 parts of 0.1mol / L SnCl respectively 4 Solution, 7500 parts of 0.2mol / L NaBH 4 Solution, 15000 parts of 0.05mol / L polyethylene glycol 600 solution, put the prepared polyethylene glycol 600 solution into the reaction kettle with a centrifugal pump, control the temperature of the kettle at 40-50°C, turn on the stirring motor to stir, the stirring speed 450r / min, the prepared 0.1mol / L SnCl 4 The solution is poured into the reaction kettle with a centrifugal pump and mixed with polyethylene glycol 600 solution, and NaBH is sprayed into the reaction kettle at an addition rate of 200 liters / minute. 4 solution, after the injection is completed, control the reaction time for 3.5-4 hours, gray precipitates are produced in the reaction kettle, and the mixed solution in the reaction ket...

Embodiment 3

[0043] Embodiment 3, a preparation method of a heterogeneous direct ethanol fuel cell cathode support material mentioned in the present invention, comprising the following steps:

[0044] 1. Prepare 6500 parts of 0.1mol / L SnCl respectively 4 Solution, 8500 parts of 0.2mol / L NaBH 4 Solution, 15000 parts of 0.05mol / L polyethylene glycol 600 solution, put the prepared polyethylene glycol 600 solution into the reaction kettle with a centrifugal pump, control the temperature of the kettle at 40-50°C, turn on the stirring motor to stir, the stirring speed 450r / min, the prepared 0.1mol / L SnCl 4 The solution is poured into the reaction kettle with a centrifugal pump and mixed with polyethylene glycol 600 solution, and NaBH is sprayed into the reaction kettle at an addition rate of 200 liters / minute. 4 solution, after the injection is completed, control the reaction time for 3.5-4 hours, gray precipitates are produced in the reaction kettle, and the mixed solution in the reaction ket...

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
Tap densityaaaaaaaaaa
Compaction densityaaaaaaaaaa
Resistivityaaaaaaaaaa
Login to View More

Abstract

The invention relates to a preparation method of an irregularly-shaped direct ethanol fuel cell negative electrode support body material. The preparation method comprises the following steps of 1, placing nanometer tin powder and nanometer SiO2 particle in a stirring kettle, controlling a kettle temperature, and performing full and uniform mixing by mixing and stirring; and 2, mixing with phenolicresin powder in the stirring kettle according to a proportion so that the nanometer tin powder, the nanometer SiO2 particle and the phenolic resin are fully and uniformly mixed, carbonizing the mixedmixture, smashing to obtain a material being 5-30 micrometers, and preparing the negative electrode support body material after high-temperature graphitization on the material. The preparation methodhas the beneficial effects that the irregularly-shaped direct ethanol fuel cell negative electrode support body material can be manufactured, the negative electrode support body manufactured by the material has the characteristics of low shrinkage rate, small deformation quantity, high graphitization, high conductivity, good mechanical property and the like, the service lifetime is two or three times of that of a conventional negative electrode support body, and intermediate phase carbon microsphere and graphite also can be completely substituted by the irregularly-shaped direct ethanol fuelcell negative electrode support body material.

Description

technical field [0001] The invention relates to the preparation of a fuel cell cathode support material, in particular to a preparation method of a heterogeneous direct ethanol fuel cell cathode support material. Background technique [0002] As a new generation of clean energy, Direct Ethanol Fuel Cell (DEFC) has received more and more attention. It has the advantages of clean and efficient, high specific energy, and simple structure. The current research is mainly focused on the single-cell experiment stage, and the cells are mostly flat-shaped structures, which lead to problems such as large size, high cost, and difficulties in fuel transportation and water and heat management of DEFC. Aiming at the deficiency of DEFC of planar direct ethanol fuel cell, a special-shaped direct ethanol fuel cell was prepared. [0003] The anode of the heterogeneous direct ethanol fuel cell (DEFC) adopts graphite plate or graphite tube structure, and the catalyst is a Pt-SnO2 / C catalyst s...

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): H01M8/0282C01B33/12B82Y40/00C01B32/205B22F9/24
CPCH01M8/0282C01B33/12B82Y40/00C01B32/205B22F9/24Y02P70/50Y02E60/50
Inventor 郭峰张润泽刘森瑞张媛媛刘岩
Owner 郭峰
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