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

A kind of processing method of fuel cell graphite bipolar plate

A fuel cell and processing method technology, applied in the direction of battery electrodes, circuits, electrical components, etc., can solve the problems of low reliability and high cost of proton exchange membrane fuel stacks, and achieve good gas tightness, high mechanical strength, and excellent electrical conductivity and corrosion resistance effects

Active Publication Date: 2020-12-01
安徽锦美碳材科技发展有限公司
View PDF12 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Proton exchange membrane fuel stacks are expensive and relatively low reliability

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 kind of processing method of fuel cell graphite bipolar plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0018] ①Petroleum coke powder with different particle sizes is used as raw material, graded in different proportions according to the formula, and after being fully stirred and kneaded, it is placed in a molding machine for molding.

[0019] ② After the molded product is fully cooled, the product is roasted according to the preset heating curve.

[0020] ③ Configure the required impregnating agent, coal tar pitch: mesocarbon microspheres = 50:1 in the impregnating agent, and the particle size range of mesocarbon microspheres is 1-5 μm.

[0021] ④Heat the roasted product, and the final heating temperature is 320°C.

[0022] ⑤Put the above-mentioned product after heating into the dipping tank, vacuumize the dipping tank, the vacuum degree is -0.08MPa, and keep the vacuum state for 30 minutes.

[0023] ⑥Inject the configured impregnating agent into the impregnating tank, and completely submerge the product to be impregnated.

[0024] ⑦ Pressurize the dipping tank, the pressuriz...

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 sizeaaaaaaaaaa
particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention discloses a novel processing method of a graphite bipolar plate of a fuel cell. The main raw materials comprise petroleum coke, coal pitch and intermediate phase carbon microspheres; andthe bipolar plate of the fuel cell is prepared by the technological steps of pressing, roasting, dipping, secondary roasting, graphitization, mechanical processing and the like. The graphite bipolarplate of the fuel cell disclosed in the invention performs dipping processing by adopting coal pitch and the intermediate phase carbon microspheres, so that the problems of low mechanical strength, high mechanical processing difficulty, poor air tightness and the like of the bipolar plate prepared from the pure graphite plate can be solved; and in addition, a resin type binder is not used, so thatthe prepared bipolar plate does not suffer from the problems of influence to the conductivity and corrosion resistance and the like.

Description

technical field [0001] The invention relates to a processing method of a graphite plate, in particular to a processing method of a fuel cell graphite bipolar plate. Background technique [0002] A fuel cell (Proton Exchange Membrance fuel Cell, abbreviated: PEMFC) is a power generation device that directly converts the chemical energy in fuel and oxidant into electrical energy through the electrocatalytic reaction on the electrode. The fuel cell bipolar plate is an important part of the fuel cell stack. The quality of the bipolar plate directly affects the power generation performance of the fuel cell. The cost of the bipolar plate is relatively high, generally accounting for 60-70% of the cost of the fuel cell. between. [0003] The ideal bipolar plate should be a good conductor of electricity and heat, with good mechanical properties, good gas barrier performance, low density, and good corrosion resistance. In a common PEMFC, the flow field and the plate can be integrate...

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): H01M4/88
CPCH01M4/8803H01M4/8817H01M4/8875Y02E60/50
Inventor 吕海龙臧文平窦文鑫韩雪赵夕殷正娥李琳慈
Owner 安徽锦美碳材科技发展有限公司
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