Daim hlau bipolar graphiteyog ib qho tseem ceeb uas siv rau hauv cov khoom siv electrochemical xws li cov roj cell thiab electrolyzers, feem ntau yog ua los ntawm cov khoom siv graphite purity siab. Nws ua lub luag haujlwm tseem ceeb hauv cov tshuaj electrochemical, feem ntau yog siv los ua tam sim no, faib cov pa roj teb (xws li hydrogen thiab oxygen), thiab cais cov chaw teb. Vim tias nws ob sab kov lub anode thiab cathode ntawm cov cell ib leeg, tsim cov qauv "bipolar" (ib sab yog lub anode flow field thiab lwm sab yog lub cathode flow field), nws hu ua bipolar plate.
Cov qauv ntawm graphite bipolar phaj
Cov phaj bipolar graphite feem ntau muaj cov khoom hauv qab no:
1. Lub Ntiaj Teb Nqus: Qhov saum npoo ntawm lub phaj bipolar yog tsim los nrog cov qauv teb ntws nyuaj kom faib cov roj tshuaj tiv thaiv (xws li hydrogen, oxygen lossis cua) thiab tso cov dej tsim tawm.
2. Txheej txheem hluav taws xob: Cov khoom siv graphite nws tus kheej muaj kev coj ua zoo thiab tuaj yeem coj tam sim no tau zoo.
3. Thaj chaw kawCov npoo ntawm cov phaj bipolar feem ntau yog tsim los nrog cov qauv sealing kom tiv thaiv cov roj to thiab cov kua nkag mus.
4. Cov channel txias (xaiv tau)Hauv qee qhov kev siv ua haujlwm siab, cov kav dej txias yuav raug tsim sab hauv cov phaj bipolar los tswj qhov kub thiab txias ntawm cov khoom siv.
Kev ua haujlwm ntawm graphite bipolar phaj
1. Kev ua haujlwm ntawm cov khoom siv hluav taws xob:
Raws li lub electrode ntawm cov khoom siv electrochemical, lub phaj bipolar yog lub luag haujlwm rau kev sau thiab coj tam sim no kom ntseeg tau tias muaj zog hluav taws xob zoo.
2. Kev faib roj:
Los ntawm kev tsim cov channel ntws, lub phaj bipolar faib cov roj tshuaj tiv thaiv rau cov txheej catalyst sib npaug, txhawb nqa cov tshuaj tiv thaiv electrochemical.
3. Kev sib cais cov cheeb tsam tshuaj tiv thaiv:
Hauv lub roj cell lossis electrolyzer, cov phaj bipolar cais cov anode thiab cathode thaj chaw, tiv thaiv cov pa roj los ntawm kev sib tov.
4. Kev tso cua sov thiab dej ntws tawm:
Cov phaj bipolar pab tswj qhov kub thiab txias ntawm cov khoom siv thiab tso dej tawm lossis lwm yam khoom tsim los ntawm cov tshuaj tiv thaiv.
5. Kev txhawb nqa txhua yam:
Cov phaj bipolar muab kev txhawb nqa rau lub electrode membrane, ua kom muaj kev ruaj khov thiab ua haujlwm tau ntev ntawm cov khoom siv.
Vim li cas ho xaiv graphite ua cov khoom siv bipolar phaj?
Cov khoom siv ntawm cov phaj bipolar graphite
●Kev ua hluav taws xob siab:
Qhov kev tiv taus ntawm graphite yog qis li 10-15μΩ.cm (zoo dua li 100-200 μΩ·cm ntawmhlau bipolar phaj) .
●Kev tiv thaiv xeb:
Yuav luag tsis muaj xeb nyob rau hauv qhov chaw acidic ntawm cov roj cell (pH 2-3), thiab lub neej ua haujlwm tuaj yeem ncav cuag ntau dua 20,000 teev.
●Sib dua:
Qhov ceev yog li ntawm 1.8 g/cm3 (7-8 g/cm3 rau hlau bipolar phaj), uas yog qhov zoo rau kev txo qhov hnyav hauv kev siv tsheb.
●Cov cuab yeej thaiv roj:
Cov qauv ntom ntawm graphite tuaj yeem tiv thaiv kev nkag mus ntawm hydrogen thiab muaj kev nyab xeeb siab.
●Kev ua tiav yooj yim:
Cov khoom siv graphite yooj yim rau kev ua thiab tuaj yeem hloov kho cov qauv tsim thiab qhov loj ntawm cov kav dej raws li qhov xav tau.
Cov phaj graphite bipolar raug tsim li cas?
Cov txheej txheem tsim khoom ntawmgraphite bipolar phajsuav nrog cov hauv qab no:
●Kev npaj cov khoom siv raw:
Siv cov graphite uas huv siab (>99.9%) los yog hmoov graphite cuav.
Ntxiv cov resin (xws li phenolic resin) ua ib qho binder los txhim kho lub zog kho tshuab.
●Kev Sib Txuas Moulding:
Cov khoom sib xyaw ua ke raug txhaj rau hauv pwm thiab nias rau hauv qhov kub siab (200-300 ℃) thiab siab siab (> 100 MPa).
●Kev kho mob graphitization:
Cua sov rau 2500-3000 ℃ hauv ib puag ncig inert ua rau cov khoom tsis yog carbon volatilize thiab tsim cov qauv graphite ntom ntom.
●Kev ua haujlwm khiav:
Siv cov tshuab CNC lossis lasers los txiav cov channel serpentine, parallel lossis interdigitated (tob 0.5-1 mm).
●Kev kho qhov chaw:
Kev siv cov resin los yog hlau (xws li kub, titanium) txheej impregnation txo qhov kev sib cuag tsis kam thiab txhim kho kev hnav tsis kam.
Cov ntawv thov ntawm graphite bipolar plates yog dab tsi?
1. Lub roj teeb:
- Proton pauv membrane roj cell (PEMFC)
- Lub roj teeb Oxide khov kho (SOFC)
- Lub roj teeb Methanol ncaj qha (DMFC)
2. Lub tshuab hluav taws xob:
- Kev tsim cov hydrogen los ntawm kev siv dej electrolysis
- Kev lag luam Chlor-alkali
3. Lub kaw lus khaws cia hluav taws xob:
- Roj teeb ntws
4. Kev Lag Luam Tshuaj:
- Lub tshuab hluav taws xob tshuaj lom neeg
5. Kev tshawb fawb hauv chav kuaj:
- Kev tsim qauv thiab kev sim cov roj cell thiab electrolyzers
Sau luv luv
Cov phaj bipolar graphiteyog cov khoom tseem ceeb ntawm cov khoom siv hluav taws xob xws li cov roj cell thiab electrolyzers, thiab muaj ntau yam haujlwm xws li kev coj ua hluav taws xob, kev faib roj, thiab kev sib cais ntawm cov chaw ua haujlwm. Nrog rau kev txhim kho ntawm cov thev naus laus zis hluav taws xob huv, cov phaj graphite bipolar tau siv ntau dua hauv cov tsheb fais fab tshiab, cov txheej txheem khaws cia hluav taws xob, kev tsim cov tshuaj hydrogen thiab lwm yam teb.
Lub sijhawm tshaj tawm: Lub Peb Hlis-31-2025