CN101640273A - Flexible expanded graphite plate - Google Patents
Flexible expanded graphite plate Download PDFInfo
- Publication number
- CN101640273A CN101640273A CN200810041096A CN200810041096A CN101640273A CN 101640273 A CN101640273 A CN 101640273A CN 200810041096 A CN200810041096 A CN 200810041096A CN 200810041096 A CN200810041096 A CN 200810041096A CN 101640273 A CN101640273 A CN 101640273A
- Authority
- CN
- China
- Prior art keywords
- graphite
- flexible expanded
- expanded graphite
- pure
- graphite plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
Landscapes
- Fuel Cell (AREA)
- Inert Electrodes (AREA)
Abstract
The invention discloses a flexible expanded graphite plate, which mainly comprises graphite worms in natural flake graphite, and also comprises the following components in percentage by weight: 20 to40 percent of pure graphite powder and 20 to 40 percent of NiCr material, wherein the graphite worms, the pure graphite powder and the NiCr material are mixed by ball milling and are molded by a die pressing or rolling method. The flexible expanded graphite plant significantly improves the conductivity on the basis of maintaining the original advantages, and can be widely applied in the field of manufacturing electrodes of fuel batteries of new energy resources.
Description
Technical field
The present invention relates to a kind of flexible expanded graphite plate, relate in particular to the composition of this flexible expanded graphite plate.
Background technology
The preparation of flexible expanded graphite has been ripe technology at home, is widely used in the insulation effect of high-temperature electric resistance furnace, and it is compared with the pure graphite cake of sintering and has the following advantages:
1, mass ratio is low, is about 1/10 of sintering graphite plate.
2, mould molding, can do very thin, minimum＜0.5mm.
3, not easily broken, shock-resistant.
But shortcoming is:
Conductivity is low, compares with the pure graphite cake of sintering, differs several magnitude.
Tracing it to its cause is that flexible expanded graphite plate is to be made by the graphite worm in the natural scale graphite, and wherein sulfur content is greater than 90%, so conductivity is low.
Summary of the invention
Technical problem to be solved by this invention provides a kind of flexible expanded graphite plate, its except possess mass ratio own low, easily processing and shock-resistant not easily broken characteristics, significantly improve its conductivity of electrolyte materials, can be widely used in the making field of the fuel cell electrode of new forms of energy.
For solving the problems of the technologies described above, flexible expanded graphite plate of the present invention mainly comprises the graphite worm in the natural scale graphite, also comprises pure graphite powder 20-40% and NiCr material 20-40%, and described percentage is weight percentage.
Above-mentioned graphite worm, pure graphite powder and NiCr material adopt ball milling to mix and the method moulding by mold pressing or roll-in.
Because flexible expanded graphite plate of the present invention has adopted technique scheme, promptly in graphite worm, add a certain amount of pure graphite powder and NiCr material, mix mold pressing or roll-forming through ball milling; This flexible expanded graphite plate has significantly improved conductivity on the basis that keeps original advantage, can be widely used in the making field of the fuel cell electrode of new forms of energy.
Embodiment
Flexible expanded graphite plate of the present invention mainly comprises the graphite worm in the natural scale graphite, also comprises pure graphite powder 20-40% and NiCr material 20-40%, and described percentage is weight percentage.
Above-mentioned graphite worm, pure graphite powder and NiCr material adopt ball milling to mix and the method moulding by mold pressing or roll-in.
The component proportioning such as the table 1 of each specific embodiment of the present invention:
Component proportioning (wt%) and the conductivity of concrete each embodiment of table 1 the present invention
| Embodiment 1 | Embodiment 2 | Embodiment 3 | |
| Pure graphite powder | ????20 | ????30 | ????40 |
| The NiCr material | ????40 | ????30 | ????20 |
| Graphite worm | ????40 | ????40 | ????40 |
| Conductivity | ????1.6×10 -8????Ω/m | ????1.2×10 -7????Ω/m | ????0.8×10 -6????Ω/m |
The present invention adds a certain amount of pure graphite powder and NiCr material in graphite worm, mix mold pressing or roll-forming through ball milling; This flexible expanded graphite plate can be widely used in the making field of the fuel cell electrode of new forms of energy keeping having significantly improved electrical conductivity on the former advantageous basis.
Claims (2)
1, a kind of flexible expanded graphite plate mainly comprises the graphite worm in the natural scale graphite, it is characterized in that: also comprise pure graphite powder 20-40% and NiCr material 20-40%, described percentage is weight percentage.
2, flexible expanded graphite plate according to claim 1 is characterized in that: described graphite worm, pure graphite powder and NiCr material adopt ball milling to mix and the method moulding by mold pressing or roll-in.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810041096A CN101640273A (en) | 2008-07-28 | 2008-07-28 | Flexible expanded graphite plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810041096A CN101640273A (en) | 2008-07-28 | 2008-07-28 | Flexible expanded graphite plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101640273A true CN101640273A (en) | 2010-02-03 |
Family
ID=41615162
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810041096A Pending CN101640273A (en) | 2008-07-28 | 2008-07-28 | Flexible expanded graphite plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101640273A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111925498A (en) * | 2020-08-30 | 2020-11-13 | 宁波耀众模塑科技有限公司 | Flame-retardant expanded graphite material for polyurethane foam product |
-
2008
- 2008-07-28 CN CN200810041096A patent/CN101640273A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111925498A (en) * | 2020-08-30 | 2020-11-13 | 宁波耀众模塑科技有限公司 | Flame-retardant expanded graphite material for polyurethane foam product |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102527257B (en) | Preparation method of conductive carbon membrane | |
| CN103633307B (en) | Method for producing silicon-carbon composite negative electrode material of lithium ion battery | |
| CN107879741B (en) | Preparation method of pure carbon slide bar material of pantograph | |
| CN1927936A (en) | Modified phenolic resin/graphite based conducting composite material and preparation process thereof | |
| CN105098176A (en) | Positive lead plaster of lead-acid storage battery | |
| CN102332562A (en) | Method for preparing negative electrode slurry of lithium titanate battery | |
| CN102117912B (en) | Method for preparing lithium ion battery active cathode material doped with composite carbon | |
| CN102064328B (en) | Composite material bipolar plate for proton exchange membrane fuel cell and manufacturing method thereof | |
| CN111261893B (en) | High-conductivity flexible graphite bipolar plate for flow battery and preparation and application thereof | |
| CN104157877A (en) | Lithium ion battery electrical core and preparation method thereof | |
| CN101640273A (en) | Flexible expanded graphite plate | |
| KR101011014B1 (en) | Process for preparing separator material for a fuel cell having high electrical conductivity, separator for a fuel cell and feul cell | |
| CN109192946B (en) | Preparation method of titanium-based lithium ion negative electrode material | |
| CN110112364B (en) | Multilayer composite negative electrode material, preparation method thereof, negative plate and lithium battery | |
| CN105280879A (en) | Silica/carbon composite porous electrode and preparation method thereof | |
| CN101771148B (en) | Coating of lithium ion battery positive plate, coating preparation method and positive plate | |
| CN104725749B (en) | Ternary-blend-based composite material with ultralow conductive percolation value and preparation method of composite material | |
| CN104538631B (en) | A kind of cell positive material and preparation method thereof | |
| Li et al. | Fabrication of electrically conductive polymer composites for bipolar plate by two‐step compression molding technique | |
| KR100660144B1 (en) | Thermoplastic material for injection molding a fuel cell separator | |
| KR101741010B1 (en) | Fabricating method of bipolar plate for redox flow batteries | |
| CN113831126A (en) | Preparation method of isostatic pressing negative electrode carbon material | |
| US20060208384A1 (en) | Method for producing an electroconductive composite material | |
| CN101985760A (en) | Components of graphitized anode and preparation method thereof | |
| Zarmehri et al. | Construction of composite polymer bipolar plate for Pem fuel cell |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20100203 |