Graphite khoom yog cov khoom siv bipolar phaj uas tau tsim thiab siv ua ntej. Traditional bipolar daim hlau tsuas yog siv cov phaj tsis ntxeem tau graphite, thiab cov grooves yog ua tiav los ntawm machining. Lub graphite bipolar phaj muaj cov thermal expansion coefficient, zoo thermal conductivity, ruaj khov khoom, zoo corrosion kuj thiab muaj zog hluav taws xob conductivity. Txawm li cas los xij, qhov brittleness ntawm graphite ua rau muaj teeb meem kev ua haujlwm, thiab tib lub sijhawm txwv tsis pub txo cov thickness ntawm graphite phaj, thiab nws yooj yim los tsim pores thaum lub sij hawm tsim khoom, kom cov roj thiab cov oxidant tuaj yeem nkag mus rau ib leeg, yog li lwm yam tshuaj yuav tsum tau ntxiv los txhim kho lub roj teeb ua haujlwm.
Peb tau tsim cov nqi-zoo graphite bipolar daim hlau rau PEMFC uas yuav tsum tau siv cov phaj siab bipolar nrog cov hluav taws xob zoo thiab cov khoom siv zoo. Peb cov phaj bipolar tso cai rau cov roj hlwb ua haujlwm ntawm qhov kub thiab txias thiab muaj hluav taws xob zoo heev thiab thermal conductivity.
Peb muab cov khoom siv graphite nrog impregnated resin thiaj li ua tiav cov roj impermeability thiab siab zog. Tab sis cov khoom khaws cia cov khoom zoo ntawm graphite nyob rau hauv cov nqe lus ntawm hluav taws xob conductivity thiab siab thermal conductivity.
Peb tuaj yeem tshuab cov phaj bipolar ntawm ob sab nrog cov chaw ntws, lossis tshuab ib sab lossis muab cov phaj tsis muaj qhov tsis muaj qhov zoo li. Tag nrho cov graphite daim hlau tuaj yeem ua tau raws li koj cov qauv tsim.
Graphite Bipolar Phaj Cov Ntaub Ntawv:
Khoom siv | Kev ceev ceev | Flexural Lub zog | Compressive zog | Tshwj xeeb Resistivity | Qhib Porosity |
GRI-1 | 1.9 g / cc min | 45 Mpa min | 90 Mpa min | 10.0 micro ohm max | 5% max |
Ntau qib ntawm cov ntaub ntawv graphite muaj rau xaiv raws li cov ntawv thov tshwj xeeb. |
Nta:
- impermeable rau gases (hydrogen thiab oxygen)
- Zoo tagnrho hluav taws xob conductivity
- Qhov sib npaug ntawm conductivity, lub zog, qhov loj thiab qhov hnyav
- Kev tiv thaiv corrosion
- Ib qho yooj yim los tsim nyob rau hauv ntau yam nta:
- Nqi-zoo