Bipolar phaj yog cov tseem ceeb ntawm lub reactor, uas muaj kev cuam tshuam zoo rau kev ua haujlwm thiab tus nqi ntawm lub reactor. Tam sim no, cov phaj bipolar feem ntau muab faib ua graphite phaj, phaj sib xyaw thiab hlau phaj raws li cov khoom siv.
Bipolar phaj yog ib qho tseem ceeb ntawm PEMFC, nws lub luag haujlwm tseem ceeb yog thauj cov pa roj los ntawm qhov chaw ntws, sau thiab ua qhov tam sim no, cua sov thiab dej tsim los ntawm cov tshuaj tiv thaiv. Nyob ntawm cov khoom siv, qhov hnyav ntawm PEMFCs pawg yog li 60% txog 80% thiab tus nqi yog li 30%. Raws li kev ua haujlwm ntawm cov phaj bipolar, thiab xav txog cov tshuaj tiv thaiv acidic electrochemical ib puag ncig ntawm PEMFC, cov phaj bipolar yuav tsum muaj cov kev xav tau siab rau hluav taws xob conductivity, huab cua nruj, txhua yam khoom, corrosion kuj, thiab lwm yam.
Ob chav phaj raws li cov ntaub ntawv feem ntau muab faib ua peb pawg graphite phaj, phaj sib xyaw, hlau phaj, graphite ob phaj yog feem ntau siv nyob rau tam sim no domestic PEMFC ob phaj, hluav taws xob conductivity, thermal conductivity, zoo stability thiab corrosion kuj thiab lwm yam kev ua tau zoo. tab sis kuj tsis zoo txhua yam khoom, nkig, machining nyuaj ua rau cov nqi siab teeb meem plagued los ntawm ntau manufacturers.
Graphitebipolar phajkev taw qhia:
Bipolar daim hlau ua los ntawm graphite muaj hluav taws xob zoo conductivity, thermal conductivity thiab corrosion kuj, thiab yog cov feem ntau siv bipolar phaj hauv PEMFCS. Txawm li cas los xij, nws qhov tsis zoo kuj tseem pom tseeb dua: qhov ntsuas kub ntawm graphite phaj feem ntau yog siab dua 2500 ℃, uas yuav tsum tau ua raws li cov txheej txheem cua sov nruj, thiab lub sijhawm ntev; Cov txheej txheem machining qeeb, lub voj voog ntev, thiab qhov tseeb ntawm lub tshuab yog siab, uas ua rau tus nqi siab ntawm graphite phaj; Graphite yog qhov tsis yooj yim, cov phaj tiav yuav tsum tau ua tib zoo tuav, kev sib dhos yog qhov nyuaj; Graphite yog ntxeem tau, yog li cov phaj yuav tsum yog ob peb millimeters tuab kom tso cai rau cov roj sib cais, ua rau qis dua ntawm cov khoom nws tus kheej, tab sis cov khoom hnyav dua.
Kev npaj ntawm graphitebipolar phaj:
Lub toner lossis graphite hmoov yog tov nrog graphitized resin, nias tsim, thiab graphitized ntawm qhov kub thiab txias (feem ntau ntawm 2200 ~ 2800C) nyob rau hauv ib qho kev txo qis los yog nyob rau hauv lub tshuab nqus tsev. Tom qab ntawd, graphite phaj yog impregnated los kaw lub qhov, thiab tom qab ntawd lub tshuab tswj cov lej yog siv los ua cov txheej txheem roj uas yuav tsum tau ua ntawm nws qhov chaw. Kev kub siab GRAPHITIZATION THIAB MACHINING NTAWM GAS CHANNELs yog lub ntsiab yog vim li cas rau tus nqi siab ntawm BIPOLAR daim hlau, nrog MACHINING ACCOUNTING rau yuav luag 60% ntawm tag nrho cov roj Cell nqi.
Bipolar phajyog ib qho ntawm cov tseem ceeb tshaj plaws nyob rau hauv cov roj cell pawg. Nws lub luag haujlwm tseem ceeb yog raws li hauv qab no:
1 、 Ib lub roj teeb sib txuas
2, Xa roj (H2) thiab huab cua (02)
3 、 Kev sau thiab kev coj ua tam sim no
4, Txhawb pawg thiab MEA
5 、 Tshem tawm cov cua sov uas tsim los ntawm cov tshuaj tiv thaiv
6 、 Tshem tawm cov dej uas tsim tawm hauv cov tshuaj tiv thaiv
Post lub sij hawm: Lub Xya hli ntuj-29-2022