Dab tsi yog graphite bipolar phaj?

Graphite bipolar phajyog ib qho tseem ceeb ntawm cov khoom siv hluav taws xob xws li roj hlwb thiab electrolyzers, feem ntau yog ua los ntawm cov khoom siv graphite siab. Nws ua lub luag haujlwm tseem ceeb hauv cov tshuaj tiv thaiv electrochemical, feem ntau yog siv los ua tam sim no, faib cov tshuaj tiv thaiv roj (xws li hydrogen thiab oxygen), thiab cais thaj chaw tshuaj tiv thaiv. Vim tias nws ob sab hu rau anode thiab cathode ntawm ib lub hlwb uas nyob ib sab, tsim "bipolar" qauv (ib sab yog anode flow field thiab sab nraud yog cathode flow field), nws yog hu ua bipolar phaj.

Cov qauv ntawm graphite bipolar phaj

Graphite bipolar phaj feem ntau muaj cov hauv qab no:
1. Flow Field: Qhov saum npoo ntawm lub phaj bipolar yog tsim los nrog cov txheej txheem ntws tawm kom sib npaug ntawm cov pa roj (xws li hydrogen, oxygen lossis cua) thiab tso tawm cov dej tsim tawm.

2. Cov txheej txheem conductive: Cov khoom siv graphite nws tus kheej muaj qhov ua tau zoo thiab tuaj yeem ua tau zoo tam sim no.

3. Sealing cheeb tsam: Cov npoo ntawm cov phaj bipolar feem ntau yog tsim los nrog cov qauv sib khi los tiv thaiv cov pa roj thiab cov kua nkag.

4. Cua txias channel (yeem): Hauv qee daim ntawv thov kev ua haujlwm siab, cov cua txias yuav raug tsim los hauv cov phaj bipolar los tswj cov kev ua haujlwm kub ntawm cov khoom siv.

Kev ua haujlwm ntawm graphite bipolar daim hlau

1. Kev ua haujlwm zoo:

Raws li cov khoom siv hluav taws xob ntawm cov khoom siv hluav taws xob, cov phaj bipolar yog lub luag haujlwm rau kev sau thiab ua haujlwm tam sim no kom ntseeg tau tias cov khoom siv hluav taws xob muaj txiaj ntsig zoo.
2. Gas faib:

Los ntawm kev tsim cov channel ntws, cov phaj bipolar sib npaug faib cov tshuaj tiv thaiv rau cov txheej txheem catalyst, txhawb cov tshuaj tiv thaiv electrochemical.
3. Sib cais thaj chaw tshuaj tiv thaiv:

Hauv cov roj cell lossis electrolyzer, cov phaj bipolar cais cov cheeb tsam anode thiab cathode, tiv thaiv cov pa roj los ntawm kev sib xyaw.
4. Thaum tshav kub kub dissipation thiab kua dej:

Cov phaj bipolar pab tswj qhov kub thiab txias ntawm cov khoom siv thiab tso dej los yog lwm yam khoom los ntawm cov khoom tsim los ntawm cov tshuaj tiv thaiv.
5. Kev them nyiaj yug tshuab:

Bipolar daim hlau muab cov qauv kev txhawb nqa rau cov membrane electrode, ua kom cov khoom ruaj khov thiab ua haujlwm ntev.

Vim li cas thiaj xaiv graphite ua cov khoom siv bipolar phaj?

Cov khoom siv ntawm graphite bipolar daim hlau
●High conductivity:

Qhov kev tiv thaiv ntau ntawm graphite yog tsawg li 10-15μΩ.cm (zoo dua 100-200 μΩ·cm ntawmhlau bipolar phaj)

●Corrosion kuj:

Yuav luag tsis muaj corrosion nyob rau hauv acidic ib puag ncig ntawm roj hlwb (pH 2-3), thiab lub neej kev pab cuam muaj peev xwm ncav cuag ntau tshaj 20,000 teev.

●Lub teeb:

Qhov ceev yog li 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.

●Gas barrier khoom:

Cov qauv ntom ntom ntawm graphite tuaj yeem tiv thaiv hydrogen nkag mus tau zoo thiab muaj kev nyab xeeb siab.

●Kev ua haujlwm yooj yim:

Cov khoom siv graphite yog ib qho yooj yim rau kev ua thiab tuaj yeem hloov kho txoj kev ntws channel tsim thiab qhov ntau thiab tsawg raws li qhov xav tau.

Yuav ua li cas graphite bipolar phaj tsim?

Cov txheej txheem ntau lawm ntawmgraphite bipolar phajsuav nrog cov hauv qab no:
●Raw khoom npaj:

Siv cov purity siab (> 99.9%) ntuj graphite lossis dag graphite hmoov.

Ntxiv cov resin (xws li phenolic resin) ua ib daim ntawv txhawm rau txhim kho lub zog ntawm lub zog.

●Compression Moulding:

Cov khoom sib xyaw yog txhaj rau hauv pwm thiab nias hauv qhov kub siab (200-300 ℃) thiab siab siab (> 100 MPa).

●Kev kho graphitization:

Cua sov mus rau 2500-3000 ℃ nyob rau hauv ib qho chaw inert ua rau cov uas tsis yog-carbon volatilize thiab tsim ib tug ntom graphite qauv.

●Runner processing:

Siv cov tshuab CNC lossis lasers los txiav cov serpentine, cov kab sib txuas lossis cov kab sib txuas (qhov tob 0.5-1 hli).

●Kev kho deg:

Impregnation nrog resin lossis hlau (xws li kub, titanium) txheej yuav txo tau kev tiv thaiv thiab txhim kho hnav tsis kam.

Dab tsi yog daim ntawv thov ntawm graphite bipolar phaj?

1. Roj Cell:

- Proton exchange membrane fuel cell (PEMFC)

- Khoom Siv Hluav Taws Xob Hluav Taws Xob (SOFC)

- Direct Methanol Roj Cell (DMFC)

2. Electrolyzer:

- Hydrogen tsim los ntawm dej electrolysis

- Chlor-alkali kev lag luam

3. Lub zog cia system:

- Flow roj teeb

4. Kev lag luam tshuaj:

- Electrochemical Reactor

5. Laboratory tshawb fawb:

- Tus qauv tsim thiab kuaj cov roj hlwb thiab electrolyzers

Cov ntsiab lus

Graphite bipolar daim hlauyog cov khoom tseem ceeb ntawm cov khoom siv hluav taws xob xws li roj hlwb thiab electrolyzers, thiab muaj ntau yam haujlwm xws li conductivity, gas tis, thiab kev sib cais ntawm thaj chaw tshuaj tiv thaiv. Nrog rau txoj kev loj hlob ntawm lub zog huv si technology, graphite bipolar daim hlau yog nce siv nyob rau hauv tshiab zog tsheb, lub zog cia systems, tshuaj hydrogen ntau lawm thiab lwm yam teb.