Raws li tus neeg muag khoom ntawm Graphite Bipolar Phaj, Kuv muaj nyob rau hauv - kev paub tob txog cov khoom no. Thaum graphite bipolar daim hlau yog dav siv nyob rau hauv ntau yam teb, tshwj xeeb tshaj yog nyob rau hauv roj hlwb, lawv kuj tuaj nrog tej yam tsis zoo. Hauv blog no, kuv yuav tham txog cov teeb meem no kom ntxaws.
1. Mechanical Fragility
Graphite yog ib yam khoom uas nkig. Graphite bipolar daim hlau yog nquag tawg thiab chipping thaum tsim khoom, tuav, thiab ua haujlwm. Hauv kev tsim cov txheej txheem, ib qho me ntsis misalignment hauv kev txiav los yog machining tuaj yeem ua rau microcracks ntawm lub phaj bipolar. Cov micro- tawg no yuav tsis pom tam sim ntawd tab sis tuaj yeem loj hlob dhau sijhawm, tshwj xeeb tshaj yog nyob rau hauv kev cuam tshuam ntawm kev ntxhov siab thiab kev vibrations.
Thaum tuav, yog tias cov phaj tsis ua tib zoo muab tso rau hauv lossis yog tias lawv poob qis, qhov kev pheej hmoo ntawm kev tawg yog qhov tseem ceeb. Nyob rau hauv ib lub roj cell pawg, qhov twg ntau daim ntawv bipolar yog stacked ua ke, lub siab thiab txav nyob rau hauv lub pawg kuj yuav ua rau mechanical kev nyuaj siab ntawm graphite bipolar daim hlau. Ib lub phaj tawg tuaj yeem cuam tshuam tag nrho cov roj hluav taws xob hauv lub cev, ua rau txo qis kev ua haujlwm thiab muaj peev xwm kho tau zoo. Qhov no mechanical fragility txwv tsis pub dhau daim ntawv thov ntawm graphite bipolar daim hlau, tshwj xeeb tshaj yog nyob rau hauv ib puag ncig uas muaj cov neeg kho tshuab siab, xws li hauv cov ntawv thov mobile xws li tsheb hluav taws xob. Yog xav paub ntxiv txog graphite - cov khoom lag luam, koj tuaj yeem mus saib peb nplooj ntawv Graphite Components.
2. Tus nqi siab
Kev tsim cov graphite bipolar daim hlau yog txheej txheem nyuaj thiab kim. High - cov ntaub ntawv zoo graphite, uas yog qhov tseem ceeb rau kev ua haujlwm ntawm cov phaj bipolar, yog kim. Cov khoom siv raw yuav tsum muaj siab purity, zoo hluav taws xob conductivity, thiab tshuaj stability. Extracting thiab refining cov graphite cov ntaub ntawv yuav tsum tau advanced technologies thiab ib tug loj npaum li cas ntawm lub zog, uas ho nce tus nqi.
Ntxiv nrog rau cov nqi raw khoom, cov txheej txheem tsim khoom ntawm graphite bipolar daim hlau kuj tseem ua haujlwm - hnyav thiab siv sijhawm -. Precision machining yog yuav tsum tau los tsim cov ntws raws thiab lwm yam qauv ntawm cov phaj bipolar. Qhov no suav nrog kev siv cov cuab yeej tshwj xeeb thiab cov neeg ua haujlwm txawj ntse. Txhua qhov kev ua yuam kev hauv cov txheej txheem machining tuaj yeem ua rau cov khoom tsis lees paub, ntxiv rau tus nqi tag nrho. Piv nrog rau lwm hom bipolar phaj, xws li hlau bipolar phaj, graphite bipolar phaj feem ntau kim dua. Tus nqi siab no ua rau cov roj hlwb siv graphite bipolar daim hlau tsis tshua muaj kev sib tw hauv kev ua lag luam, tshwj xeeb tshaj yog rau cov ntawv teev npe loj - qhov twg tus nqi yog qhov tseem ceeb. Koj tuaj yeem tshawb nrhiav ntau ntxiv txog peb cov khoom siv graphite ntawm nplooj ntawv Graphite Base Susceptors.
3. Txwv Corrosion Resistance
Txawm hais tias graphite tseem nyob ruaj khov hauv ntau qhov chaw tshuaj, hauv qee qhov kev mob hnyav, graphite bipolar daim hlau tseem tuaj yeem raug corroded. Hauv cov roj hlwb, cov khoom siv electrolyte thiab cov tshuaj tiv thaiv tuaj yeem ua rau muaj kev cuam tshuam ntawm cov ntawv bipolar thaum lub sijhawm. Piv txwv li, nyob rau hauv proton - pauv membrane roj hlwb (PEMFCs), lub acidic ib puag ncig yuav maj mam erode lub graphite nto.
Corrosion tuaj yeem ua rau muaj teeb meem ntau. Ua ntej, nws tuaj yeem hloov qhov chaw ntawm lub phaj bipolar, xws li txo nws cov hluav taws xob conductivity. Raws li cov graphite nto yog corroded, cov conductive txoj kev puas, uas ua rau ib tug nce nyob rau hauv lub internal kuj ntawm cov roj cell. Qhov no, nyob rau hauv lem, txo cov efficiency tag nrho ntawm cov roj cell. Thib ob, corrosion kuj tuaj yeem ua rau tso cov graphite hais rau hauv cov roj cell system. Cov khoom no tuaj yeem paug cov electrolyte thiab lwm yam khoom, uas ua rau kev ua haujlwm tsis zoo ntxiv thiab ua rau lub cev tsis ua haujlwm. Txhawm rau tswj kev ua haujlwm ntawm cov roj hlwb nrog graphite bipolar daim hlau, kev tiv thaiv corrosion ntxiv - feem ntau yuav tsum tau ua, uas ntxiv rau cov nqi thiab qhov nyuaj ntawm lub cev.
4. Nyuaj hauv pawg ntau lawm
Kev tsim cov graphite bipolar daim hlau tsis yooj yim scalable rau loj ntau lawm. Cov txheej txheem tsim khoom yog nyob ntawm qhov tseeb machining, uas yog lub sijhawm - siv thiab ua haujlwm - cov txheej txheem hnyav. Txhua lub phaj bipolar yuav tsum tau ua tib zoo machined kom paub tseeb tias qhov tseeb ntawm cov dej ntws thiab lwm yam qauv. Qhov no ua rau nws nyuaj rau nce cov ntim ntau lawm kom tau raws li kev lag luam loj hlob.
Ntxiv mus, kev tswj kom zoo hauv kev tsim khoom loj kuj yog ib qho kev sib tw. Vim tias cov khoom tsis muaj zog ntawm graphite, nws yog ib qho nyuaj los xyuas kom meej tias txhua lub phaj bipolar ua tau raws li cov qauv nruj nruj thaum lub sij hawm siab - ntim ntau lawm. Txawm tias ib qho me me nyob rau hauv ib lub phaj tuaj yeem cuam tshuam kev ua haujlwm ntawm tag nrho cov roj cell pawg. Raws li qhov tshwm sim, kev tsim tawm ntawm graphite bipolar daim hlau feem ntau tsis tshua muaj, uas ntxiv txwv lawv qhov loj - daim ntawv thov. Peb nplooj ntawv Graphite Bipolar Phaj muab cov ntsiab lus ntxiv txog cov khoom no.
5. Tsawg Thermal Conductivity
Graphite muaj cov thermal conductivity tsawg piv rau lwm cov ntaub ntawv, xws li hlau. Hauv cov roj hlwb, kev tswj xyuas cua sov yog qhov tseem ceeb rau kev tswj xyuas qhov kev ua haujlwm zoo tshaj plaws. Thaum lub sij hawm ua hauj lwm ntawm ib tug roj cell, ib tug tseem ceeb npaum li cas ntawm tshav kub yog generated. Yog tias qhov cua sov no tsis tuaj yeem cuam tshuam zoo, nws tuaj yeem ua rau qhov kub thiab txias ntawm cov roj cell, uas tuaj yeem cuam tshuam tsis zoo rau nws txoj kev ua haujlwm thiab kev ua neej.
Qhov qis thermal conductivity ntawm graphite bipolar daim hlau ua rau nws nyuaj rau kev hloov cov cua sov hauv cov roj cell mus rau qhov txias txias. Raws li qhov tshwm sim, cov cua sov ntxiv - cov khoom tawg tuaj yeem yuav tsum tau, uas ua rau kom qhov nyuaj thiab tus nqi ntawm cov roj cell system. Hauv qee qhov siab - fais fab roj ntawm tes daim ntawv thov, qhov tsis zoo thermal conductivity ntawm graphite bipolar daim hlau tuaj yeem dhau los ua lub tog raj kheej, txwv lub zog tso tawm thiab kev ua haujlwm ntawm cov roj cell.
Xaus
Txawm hais tias muaj qhov tsis zoo uas tau hais los saum toj no, graphite bipolar daim hlau tseem muaj lawv qhov tshwj xeeb zoo, xws li kev siv hluav taws xob zoo thiab tshuaj lom neeg ruaj khov hauv qee qhov tsis yog - ib puag ncig hnyav. Ntawm peb lub tuam txhab, peb niaj hnub ua haujlwm ntawm kev tshawb fawb thiab kev txhim kho kom kov yeej cov teeb meem no. Peb tab tom tshawb nrhiav cov ntaub ntawv tshiab thiab cov txheej txheem tsim khoom los txhim kho cov khoom siv kho tshuab, txo tus nqi, txhim kho corrosion kuj, thiab ua kom cov thermal conductivity ntawm graphite bipolar daim hlau.
Yog tias koj txaus siab rau peb cov Graphite Bipolar Phaj los yog muaj lus nug txog peb cov khoom, peb zoo siab tos txais koj hu rau peb rau kev yuav khoom thiab kev sib tham ntxiv. Peb tau cog lus tias yuav muab siab - cov khoom zoo thiab cov kev pabcuam zoo heev kom tau raws li koj xav tau.
Cov ntaub ntawv
"Fuel Cell Technology Phau Ntawv Qhia" los ntawm Hma Vielstich, Arnold Lamm, thiab Hubert Gasteiger.
"Materials for Fuel Cell Technologies," kho los ntawm John B. Goodenough thiab Y. - M. Chiang.
Cov ntaub ntawv tshawb fawb txog kev ua tau zoo thiab kev siv graphite bipolar daim hlau hauv cov ntawv xov xwm ntawm electrochemistry thiab lub zog thev naus laus zis.