PEM (Proton Exchange Membrane) dej electrolysisthev naus laus zis rau hydrogen ntau lawm muaj ntau qhov zoo, suav nrog kev ua haujlwm siab tam sim no, kev hloov pauv mus rau lub zog txuas ntxiv mus, thiab cov qauv compact. Cov yam ntxwv no ua rau nws haum rau kev lag luam loj. Txawm li cas los xij, kom muaj kev vam meej loj loj, nws yog ib qho tseem ceeb tsis yog los daws cov teeb meem tseem ceeb tab sis tseem xav txog kev lag luam.
"Lub Hom Phiaj Nruab Nrab thiab Lub Sij Hawm Ntev rau Kev Txhim Kho Kev Lag Luam Hydrogen Zog (2021-2035)" hauv kuv lub tebchaws hais txog qhov xav tau los txhim kho hydrogen ntau lawm kev hloov pauv kev ua tau zoo los ntawm cov khoom siv hluav taws xob tauj dua tshiab thiab ua kom nce hydrogen ntau lawm ib chav tsev. Tsis tas li ntawd, kev ua tiav hauv cov thev naus laus zis tseem ceeb cuam tshuam nrog hydrogen zog infrastructure yog qhov tseem ceeb.
Lub Tsev Haujlwm Saib Xyuas Kev Tshawb Fawb thiab thev naus laus zis "14th Tsib Xyoo Plan" National Key Research thiab Development Plan rau "Hydrogen Energy Technology" (2022) suav nrog ntau lub ntsiab lus hais txog PEM dej electrolysis hydrogen ntau lawm. Cov ntsiab lus no suav nrog megawatt-scale proton txauv membrane electrolyzer tshuab, high-pressure hydrogen electrolyzer rau dej electrolysis, thiab kev tshawb fawb thiab kev loj hlob ntawm cov txheej txheem tseem ceeb thev naus laus zis rau hydrogen ntau lawm los ntawm proton pauv membrane dej electrolysis.
Cov electrolyzer, ib feem tseem ceeb ntawm PEM dej electrolysis hydrogen ntau lawm, cuam tshuam rau tag nrho kev ua tau zoo. Tam sim no kev txhim kho cov khoom siv zog ua haujlwm feem ntau tsom mus rau hydrogen ntau lawm nplai thiab tus nqi.
Tam sim no, tsuas yog ob peb lub tuam txhab tsim khoom lag luam muaj peev xwm tsim cov khoom siv hluav taws xob PEM thiab txawm tias tsawg dua tuaj yeem tsim cov tshuab PEM hydrogen ntau lawm. Yog li ntawd, ntau qhov loj-scale PEM dej electrolysis hydrogen ntau lawm tej yaam num nyiam cov cuab yeej los ntawm txawv teb chaws tuam txhab uas muag.
Qhov tseem ceeb, qee qhov kev lag luam hauv tsev thiab cov koom haum tshawb fawb tau ua tiav txoj kev loj hlob ntawm PEM hydrogen ntau lawm tshuab nrog hydrogen ntau lawm nplai ntawm 200Nm3 / h.
Txawm li cas los xij, kev lag luam hauv PEM electrolysis dej hydrogen ntau lawm tseem nyob rau theem pib ntawm kev lag luam. Nyob rau hauv kev sib piv rau lub prevailing alkaline dej hydrogen ntau lawm txoj kev, lub ntsiab kev sib tw ntsib PEM hydrogen ntau lawm yog nws cov nqi.
Ib tus thawj coj hauv kev lag luam tau hais tias, "Txhua cov saw hlau yuav tsum ua haujlwm ua ke los txo cov nqi yav tom ntej. Txhawm rau kom muaj kev sib tw, tus nqi ntawm PEM electrolysis dej hydrogen yuav tsum tau txo qis rau 1.5-2 npaug ntawm cov dej alkaline hydrogen. ntau lawm los ntawm ntsuab hydrogen. "
Tam sim no, muaj tsis txaus localization ntawm cov dej electrolysis hydrogen ntau lawm saw. Cov khoom tseem ceeb xws li cov phaj bipolar, catalysts, proton exchange membranes, thiab gas diffusion khaubncaws sab nraud povtseg ua rau muaj teeb meem vim tsis muaj nqi. Txawm hais tias muaj ntau lub tsev cog qoob loo ntsuab hydrogen txais yuav PEM electrolysis hydrogen ntau lawm technology, tus naj npawb ntawm cov haujlwm tom qab txoj kev no tseem txwv.
Nyob rau hauv tag nrho cov PEM dej electrolysis hydrogen ntau lawm saw, lub proton pauv membrane nthuav tawm qhov teeb meem tseem ceeb tshaj plaws.
Raws li tus neeg sawv cev ntawm kev lag luam, tsis zoo li cov roj hlwb, cov proton membranes feem ntau siv rau cov dej electrolysis-based hydrogen ntau lawm yog 115 thiab 117 homogeneous daim nyias nyias, nrog lub thickness ntawm 150-200 microns. Qhov tuab no kuj siab dua (8-10 microns) piv rau roj cell proton daim nyias nyias, ua rau muaj qhov o ntau dua thiab muaj peev xwm deformation thaum txheej txheej. Yog li ntawd, kev tsim tshwj xeeb yog xav tau rau cov khoom siv electrolytic dej membrane txheej, thiab roj cell membrane electrodes tsis tuaj yeem siv ncaj qha rau lub hom phiaj no.
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