Hauv cov txheej txheem hluav taws xob electrochemical uas hloov zuj zus tas li,graphite feltNws sawv tawm ua ib yam khoom siv uas muaj cov pa roj carbon ntau yam, muaj cov yam ntxwv tshwj xeeb ntawm cov qauv, hluav taws xob, thiab tshuaj lom neeg. Txawm hais tias tsis yog txhua lub tsev siv roj cell siv graphite felt thoob plaws ntiaj teb, nws lub luag haujlwm - tshwj xeeb tshaj yog hauv cov roj cell thiab cov tshuab hybrid roj cell - tau nyiam cov engineers thiab cov neeg tsim qauv uas mob siab rau kev ua kom zoo dua ntawm cov roj cell ntawm ob qho tib si cov ntaub ntawv thiab cov txheej txheem.
I. Cov yam ntxwv tseem ceeb ntawm Graphite felt
Los ntawm kev xav txog cov ntaub ntawv tshawb fawb, graphite felt yog ib lub network porous peb-seem uas muaj cov carbon fibers sib txuas, feem ntau yog los ntawm polyacrylonitrile (PAN) lossis pitch precursors thiab graphitized ntawm qhov kub siab. Cov qauv no muab graphite felt nrog ntau yam khoom tshwj xeeb tshaj yog tseem ceeb hauv cov chaw electrochemical:
● Kev ua hluav taws xob zoo: ua kom muaj kev thauj mus los ntawm cov hluav taws xob
● Porosity siab (>90%): ua kom cov pa roj lossis kua nkag tau yooj yim
● Tiv taus xeb tau zoo: hloov tau rau cov chaw acidic/oxidizing (piv txwv li, PEMFCs)
● Kev ua kom muaj zog zoo: pab kom sib cuag ruaj khov
● Kev tiv taus kub siab: tsim nyog rau cov tshuab hluav taws xob kub siab
II. Lub Luag Haujlwm ntawm Graphite Felt hauv Cov Roj Hmab Sib Txawv
Daim ntawv thov ntawm graphite xav hauv cov thev naus laus zis roj cell sib txawv heev nyob ntawm qhov system architecture.
1. Hauv Cov Roj Teeb Uas Muaj Cov Khoom Siv (piv txwv li, cov roj teeb uas muaj cov khoom siv vanadium redox) - Cov Khoom Siv Hluav Taws Xob Tseem Ceeb
Hauv cov txheej txheem electrochemical ua kua - tshwj xeeb tshaj yog cov roj teeb ntws, uas feem ntau tau tham nrog cov thev naus laus zis roj cell vim lawv cov ntsiab cai electrochemical zoo sib xws - graphite felt yog siv ua cov khoom siv electrode tseem ceeb. Nws thaj chaw tshwj xeeb siab thiab cov qauv porous sib txuas ua ke muab cov chaw nquag rau cov tshuaj redox thaum txhawb nqa electrolyte ntws. Cov txheej txheem hloov kho nto xws li thermal activation lossis oxidation feem ntau yog siv los txhim kho nws cov dej noo thiab catalytic kev ua ub no, cuam tshuam ncaj qha rau kev ua haujlwm ntawm lub cev thiab kev ruaj khov ntawm lub voj voog.
2. Hauv PEM Cov Roj Hmab (Proton Exchange Membrane Fuel Cells) - Cov Khoom Siv Pabcuam/Cov Khoom Txhawb Nqa
Qhov sib txawv, hauv cov txheej txheem pauv proton (PEM), graphite felt tsis yog kev xaiv ib txwm rau cov txheej txheem roj diffusion (GDL). Daim ntawv carbon lossis cov ntaub carbon dominates vim nws qhov kev sib npaug zoo tshaj plaws hauv kev coj ua, kev ua haujlwm ruaj khov, thiab kev tsim khoom. Txawm li cas los xij, graphite felt tau pom cov ntawv thov tshwj xeeb hauv qee qhov kev teeb tsa PEM tshwj xeeb, tshwj xeeb tshaj yog qhov twg xav tau kev tswj dej lossis kev faib roj. Nws cov porosity siab tuaj yeem txhim kho kev ua haujlwm hloov pauv loj hauv qab cov av noo siab lossis cov av noo-nyiam, tab sis qhov no qhia txog kev lag luam hauv kev tiv thaiv kev sib cuag thiab kev ruaj khov compressive, uas yuav tsum tau hais los ntawm kev tsim qauv zoo thiab kev tswj siab.
3. Hauv Cov Roj Hmab Kub Siab (SOFCs, thiab lwm yam) - Cov Khoom Siv Pab Txhawb Nqa / Sealing Buffer
Hauv cov tshuab kub siab (piv txwv li, cov khoom siv electrolyzer oxide khov kho), graphite felt feem ntau tsis siv ua cov khoom siv hluav taws xob tseem ceeb vim yog qhov tseem ceeb ntawm cov khoom siv ceramic hauv cov electrodes thiab electrolyte. Txawm li cas los xij, nws tuaj yeem ua haujlwm pabcuam, suav nrog kev tiv thaiv conductive, kev txhawb nqa sealing, lossis kev pabcuam thermal expansion hauv cov khoom siv pabcuam lossis thaj chaw interfacial. Txawm hais tias cov luag haujlwm no yog qhov thib ob, lawv yog qhov tseem ceeb rau kev ua kom muaj kev ruaj khov ntev thiab kev ua haujlwm zoo hauv qab cov xwm txheej ua haujlwm hnyav.
III. Cov Lus Qhia Txog Lub Luag Haujlwm Tseem Ceeb Hauv Kev Siv Tshuab Roj Cell
Los ntawm kev xam pom txog kev tsim khoom, qhov tseem ceeb ntawm graphite felt yog nws lub peev xwm los koom ua ke ntau yam haujlwm hauv ib yam khoom siv. Nws cov qauv peb-seem tso cai rau kev tsim cov electrochemical interfaces ntev, ua kom thaj chaw ua haujlwm tsis muaj kev nce ntxiv ntawm qhov system footprint. Tib lub sijhawm, nws pab txhawb rau kev faib cov kua dej sib npaug, txo cov concentration gradients thiab txo cov polarization poob cuam tshuam nrog cov kev txwv hloov pauv loj. Kev koom ua ke zoo ntawm graphite felt pab txhawb kev tsim cov network conductive tas mus li, yog li txo qhov tsis kam sab hauv thiab txhim kho kev ua haujlwm ntawm lub cev tag nrho.
Ntxiv mus, nws ua lub luag haujlwm tseem ceeb hauv kev kho tshuab thiab kev sib dhos ua ke. Qhov kev sib zog thiab kev ywj pheej ntawm graphite felt tso cai rau nws hloov kho rau kev tsim khoom thiab tswj kev sib cuag ruaj khov hauv qab cov xwm txheej stacking. Tus cwj pwm no yog qhov tshwj xeeb tshaj yog nyob rau hauv modular lossis loj-scale systems, vim tias kev faib tawm sib xws yog qhov tseem ceeb rau kev ua tau zoo sib xws.
IV. Vim li cas ho xaiv VET Energy?
Hauv kev siv roj teeb thiab cov ntawv thov electrochemical kub siab, VET Energy, siv nws txoj kev nqis peev R&D thiab kev paub txog kev tsim kho hauv cov ntaub ntawv carbon, tau tsim cov khoom lag luam ntawm graphite felt thiab cov ntaub ntawv sib xyaw uas npog ntau yam kev siv, muab cov kev daws teeb meem zoo rau ntau hom roj teeb. VET Energy cov kev daws teeb meem khoom siv tau siv dav dav thoob plaws ntau yam thev naus laus zis, suav nrog cov roj teeb roj teeb pauv proton thiab cov roj teeb oxide khov, thiab tau raug nthuav dav thiab lees paub hauv cov kab ke txuas ntxiv xws li cov roj teeb ntws. Yog tias koj tab tom tshawb nrhiav qhov peev xwm ntawm kev sivgraphite feltthiab cov ntaub ntawv carbon cuam tshuam hauv cov txheej txheem electrochemical, lossis xav kom ua kom zoo dua cov txheej txheem thiab kev ua tau zoo uas twb muaj lawm, thov koj xav tiv tauj peb rau kev sib tham thiab kev koom tes los txhawb kev txhim kho ntawm cov thev naus laus zis roj cell tiam tom ntej.
Lub sijhawm tshaj tawm: Plaub Hlis-03-2026