Cov khoom tseem ceeb ntawm cov roj cell yog: Electrode, Electrolyte Membrane, Tam sim no Collector, thiab lwm yam.
1, electrode
Lub electrode ntawm cov roj cell yog ib qho chaw tshuaj electrochemical qhov chaw uas cov roj nkag mus rau oxidation cov tshuaj tiv thaiv thiab cov oxidant undergoes txo cov tshuaj tiv thaiv. Tus yuam sij rau nws qhov kev ua tau zoo yog nyob rau hauv kev ua tau zoo ntawm cov catalyst, cov khoom siv electrode thiab cov txheej txheem tsim hluav taws xob.
Cov electrode tuaj yeem muab faib ua ob ntu, ib qho yog anode thiab lwm qhov yog cathode. Lub thickness feem ntau yog 200-500mm. Cov qauv sib txawv ntawm lub tiaj tus electrode ntawm lub roj teeb zoo tib yam nyob rau hauv uas lub electrode ntawm cov roj cell yog ib tug ntxeem tau qauv, yog li nws yog tsim los ua ntxeem tau. Lub ntsiab yog vim li cas rau cov qauv yog tias feem ntau ntawm cov roj thiab oxidants siv nyob rau hauv lub roj cell yog gases (xws li oxygen, hydrogen, thiab lwm yam), thiab solubility ntawm cov roj nyob rau hauv lub electrolyte tsis siab. Txhawm rau nce qhov ua haujlwm tam sim no qhov ceev ntawm cov roj cell thiab txo cov polarization, Yog li ntawd, cov khoom siv hluav taws xob nrog cov txheej txheem ntxeem tau tsim los ua kom thaj tsam ntawm cov electrodes koom nrog cov tshuaj tiv thaiv. Qhov no kuj yog ib qho ntawm cov laj thawj tseem ceeb vim li cas cov roj hlwb tuaj yeem txav mus los ntawm qhov kev tshawb fawb theoretical mus rau theem tswv yim.
Tam sim no, cov hluav taws xob hluav taws xob ntawm cov roj hluav taws xob kub kub yog tsim los ntawm cov khoom siv catalytic, xws li Y2O3-stabilized-ZrO2 (YSZ luv luv) ntawm cov khoom siv roj oxide roj (cov ntawv luv li SOFC) thiab cov nickel oxide electrodes rau cov roj carbon monoxide molten ( abbreviated li MCFC), thiab lwm yam. , thiab qis-kub roj hlwb yog tsim los ntawm ib tug nyias txheej ntawm catalyst cov khoom txhawb los ntawm ib tug roj diffusion txheej, xws li cov platinum electrodes ntawm phosphoric acid roj hlwb (hu ua PAFC) thiab proton pauv. membrane roj hlwb (hu ua PEMFC). [4]
2, electrolyte diaphragm
Lub luag haujlwm tseem ceeb ntawm electrolyte membrane yog cais cov oxidizer thiab txo tus neeg sawv cev, thiab ua cov ions, yog li lub thinner cov electrolyte membrane, qhov zoo dua, tab sis lub zog kuj yuav tsum tau xav txog. Raws li cov cuab yeej siv tam sim no muaj kev txhawj xeeb, qhov dav dav dav yog li kaum ntawm millimeters mus rau pua pua millimeters. ; Raws li cov khoom siv, tam sim no muaj ob txoj kev txhim kho. Ib qho yog ua ntej ua cov diaphragm ntxeem tau nrog cov ntaub ntawv insulating xws li asbestos zaj duab xis, silicon carbide SiC zaj duab xis, lithium aluminate (LiAlO3) zaj duab xis, thiab tom qab ntawd muab tso rau hauv molten lithium-potassium carbon. Ntsev, poov tshuaj hydroxide thiab phosphoric acid, thiab lwm yam, ua rau nws ua raws li lub diaphragm pores, thiab lwm yam yog siv perfluorosulfonic acid resin (xws li PEMFC) thiab YSZ (xws li SOFC).
3, khoom
Lub collector tseem hu ua bipolar phaj, uas muaj lub luag haujlwm ntawm kev sau tam sim no, sib cais oxidant thiab txo tus neeg sawv cev, thiab channeling cov tshuaj tiv thaiv roj. Kev ua tau zoo ntawm cov khoom siv feem ntau yog nyob ntawm nws cov yam ntxwv ntawm cov khoom siv, ntws tawm tsim thiab kev siv tshuab ua haujlwm.
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