I. Indima Eyinhloko Yamapuleti E-Graphite Bipolar Ekukhuleni Kwemboni
Ngokuphikisana nezinhloso "zekhabhoni ephindwe kabili" kanye nentuthuko esheshayo yomnotho we-hydrogen, amaseli kaphethiloli (ikakhulukazi amaseli kaphethiloli e-PEM) ashintsha kusukela esigabeni sokuboniswa kuya ekusetshenzisweni okukhulu. Kusukela ezimotweni zabagibeli kuya ezinhlelweni zokukhiqizwa kwamandla ezisatshalaliswayo, ukusebenza kahle kohlelo, isikhathi sokuphila, kanye nezindleko zamaseli kaphethiloli kuba izinkomba ezibalulekile zokuncintisana embonini.
Kulesi simiso, ipuleti le-graphite bipolar aliyona nje "ingxenye yosizo," kodwa lingenye yezinto eziyinhloko ezisebenzayo ezinquma ukusebenza kwe-fuel cell stack. Ucwaningo lubonisa ukuthi amapuleti e-bipolar aqukethe cishe u-60-80% wesisindo kanye no-40-50% wezindleko ze-fuel cell stack; ukwakheka kwawo kanye nokukhethwa kwezinto kuthinta ngqo ubuningi bamandla esistimu, ukuqina, kanye nezindleko zokukhiqiza.
Ngokombono wendlela yokusebenza, amapuleti e-graphite bipolar afinyelela ukusabela okuzinzile nokuqhubekayo kwe-electrochemical kwamaseli kaphethiloli ngokuhlanganisa kakhulu imisebenzi eminingi—kufaka phakathi “ukuqhuba kwamanje, ukusatshalaliswa kwegesi, ukuphathwa kokushisa, kanye nokusekelwa kwesakhiwo”—okuwenza abe “ingxenye eyinhloko yokuhlanganisa i-multi-physics” yangempela ngaphakathi kwesitaki.
II. Indima kanye Nezimiso Zokusebenza Zamapuleti E-Graphite Bipolar Kumaseli Kaphethiloli
Kuseli likaphethiloli le-proton exchange membrane fuel cell elijwayelekile (i-PEMFC), amapuleti e-graphite bipolar atholakala kuzo zombili izinhlangothi ze-membrane electrode assembly (MEA), ahlanganisa imisebenzi yamayunithi eseli likaphethiloli axhunywe ngochungechunge ngesakhiwo sawo esinamacala amabili.
Isimiso sayo sokusebenza singaqondwa ngezinqubo ezine ezilandelayo ezihlangene:
Okokuqala indlela yokuqoqwa nokuhanjiswa kwamanje. Ngesikhathi sokuphendula kweseli likaphethiloli, i-hydrogen ilahlekelwa ama-electron ku-anode, futhi lawa ma-electron akhishwa njengamandla ngesekethe yangaphandle. Ipuleti le-bipolar linesibopho sokuqondisa ama-electron kusuka kwelinye iseli kuya kwelinye. Ukuhanjiswa kukagesi kwangaphakathi kwe-graphite kungafinyelela ku-oda lika-10⁴ S/cm, kunciphisa kakhulu ukulahlekelwa kwe-ohmic futhi ngaleyo ndlela kuthuthukise ukusebenza kahle kohlelo.
Okwesibili indlela yokuthutha kwe-reactant kanye nokulawula insimu yokugeleza. Ubuso be-bipolar plate busebenza ngomshini ngeziteshi zokugeleza ezinembile ukuze kusatshalaliswe i-hydrogen nomoya ngokulinganayo futhi kususwe amanzi akhiqizwa yi-reaction. Le nqubo empeleni iyinkinga yokulawula ukugeleza kwegesi-uketshezi lwezigaba ezimbili, futhi ukwakheka kwayo kuthinta ngqo ukusebenza kahle kokudlulisa isisindo kanye nokuqina kokusebenza kwebhethri.
Okwesithathu indlela yokuphatha ukushisa. Amaseli kaphethiloli akhiqiza ukushisa ngesikhathi sokusebenza; uma lokhu kushisa kungenakuqedwa ngempumelelo, kuzoholela ezindaweni ezishisayo ezisendaweni futhi kusheshise ukuguga kwe-membrane electrode. Ukuqhuba kahle kokushisa kwe-Graphite kuyivumela ukuthi isakaze ukushisa ngokushesha nangokulinganayo ngaphakathi kwendiza, ngaleyo ndlela igcine insimu yokushisa ezinzile ngaphakathi kwe-stack.
Okokugcina, kukhona indlela yokuvala nokuhlukanisa. Ngokuklanywa kwesakhiwo kanye nohlelo lokuvala oluhlanganisiwe, ipuleti le-bipolar liqinisekisa ukuhlukaniswa okuqinile kwe-hydrogen ne-oxygen, kuvimbele ukungcoliswa kwegesi. Lokhu akugcini nje ngokuphazamisa ukusebenza kahle kodwa futhi kuthinta ngqo ukuphepha kohlelo.
Ngamafuphi, isimiso sokusebenza sama-graphite bipolar plates akuyona inqubo eyodwa engokwenyama, kodwa kunalokho umphumela wokuxhumana okuhlangene kwesistimu ehlanganisiwe yamasimu amaningi ehilela izici zikagesi, zokushisa, zokugeleza, kanye nezakhiwo.
III. Kungani Kufanele Ukhethe I-Graphite: Ukuhlaziywa Kwezakhiwo Ezibalulekile Zomzimba
I-Graphite isibe yinto esetshenziswa kakhulu njenge-bipolar plate, kokubili ngokomlando nanamuhla, ngenxa yezinzuzo zayo eziphelele kuzo zonke izindlela eziningi zokusebenza ezibalulekile.
Ngokuphathelene nezakhiwo zikagesi, i-graphite ibonisa ukuhanjiswa kukagesi okuhle kakhulu; isakhiwo sayo esinezingqimba sinikeza indlela eqhubekayo yokuthuthwa kwama-electron, okwenza kube yinto efanelekile yokuhlangabezana nezincazelo zobuchwepheshe ze-DOE (ukuhanjiswa kukagesi > 100 S/cm).
Ngokuphathelene nokuqina kwamakhemikhali, i-graphite ikhombisa ukumelana nokugqwala okumangalisayo. Endaweni ene-asidi kanye nekhono eliphezulu lamaseli kaphethiloli, izinto zensimbi zivame ukugqwala futhi zakhe izendlalelo zokudlula, ngaleyo ndlela zandise ukumelana kokuthintana. Ngokuphambene nalokho, i-graphite inokungasebenzi kwamakhemikhali okungokwemvelo, okuvumela ukusebenza okuzinzile kwesikhathi eside.
Ngokuphathelene nezakhiwo zokushisa, i-graphite inokushisa okuphezulu, okusiza ekufinyeleleni ukusatshalaliswa kokushisa okufanayo ngaphakathi kwe-stack futhi kuvimbele ukulimala kwe-electrode ye-membrane okubangelwa ukushisa ngokweqile kwendawo.
Ngaphezu kwalokho, i-graphite inikeza izakhiwo ezinhle kakhulu zokuvimbela igesi (ezingathuthukiswa kakhulu ngokufaka umoya), ivimbela ngempumelelo ukungena kwe-hydrogen ne-oxygen futhi iqinisekise ubuqotho bohlelo.
Kodwa-ke, ngokombono wobunjiniyela, i-graphite inemikhawulo ebalulekile. Isibonelo, iyaphuka kalula, kunzima ukuyicubungula, futhi ngokuvamile idinga ukujiya kwamamilimitha amaningana (>2–5 mm), okuvimbela imizamo yokufeza imiklamo ye-stack elula nenamandla aphezulu. Ngenxa yalokho, ezinye izindlela ze-graphite ezihlanganisiwe kanye nezinsimbi ziye zaba yinto ebalulekile ocwaningweni eminyakeni yamuva.
IV. Izitayela Zemboni kanye Nombono Wesikhathi Esizayo
Njengoba ukuthengiswa kwamaseli kaphethiloli kushesha, ubuchwepheshe be-bipolar plate buthuthuka ngokushesha, kanti intuthuko yabo iqhutshwa ngokusobala yizinto zokwakha kanye nentuthuko yokukhiqiza.
Ngakolunye uhlangothi, ezimotweni zabagibeli kanye nezicelo zamandla aphezulu, imboni ishintsha kancane kancane isuka kumapuleti e-bipolar e-graphite yendabuko iye kumapuleti e-bipolar ensimbi (njengensimbi engagqwali kanye ne-titanium alloys). Lezi zinto zingafinyelela ubukhulu obungaphansi kwamamilimitha, futhi izinqubo zokunyathela zinciphisa kakhulu izindleko zokukhiqiza, ngaleyo ndlela zihlangabezane nezidingo zokukhiqiza ngobuningi.
Ngakolunye uhlangothi, amapuleti e-bipolar ahlanganisiwe e-graphite avela njengesixazululo esibalulekile sesikhashana. Ngokufaka ama-conductive fillers afana nama-resins nama-carbon nanotubes, lezi zinto zingagcina i-conductivity ephezulu kagesi kanye nokumelana nokugqwala ngenkathi kuthuthukiswa amandla omshini futhi kunciphisa izindleko zokucubungula.
Ngesikhathi esifanayo, ubuchwepheshe bokukhiqiza obuthuthukisiwe (njengokukhiqiza okungeziwe) buqhuba ukwakheka kweziteshi zokugeleza kwamapuleti e-bipolar kuya ekuyinkimbinkimbi nasekusebenzeni kahle okukhulu, ngaleyo ndlela kuthuthukisa ukusebenza kahle kanye nokusebenza kahle kwamandla kwamaseli kaphethiloli.
Esikhathini eside, amapuleti e-graphite bipolar azohlala encintisana ezindaweni ezilandelayo:
● Izinhlelo zokuphehla ugesi ezingashintshi (lapho izindleko kanye nesikhathi sokuphila kuyizinto ezibalulekile)
● Izinhlelo zokusebenza zamandla aphansi kuya kwaphakathi
● Izinhlelo ze-electrochemical zesimo sokusebenza esine-alkaline noma ezithile
Njengomkhiqizi ohamba phambili waseShayina kanye nomhlinzeki weamapuleti e-graphite bipolar, I-Ningbo VET Energy ithuthukise amapuleti e-graphite bipolar athuthukile e-PEMFC angabizi kakhulu, aqhuba kahle kakhulu, futhi aqinile ngokwemishini. I-VET Energy iphinde inikeze izinto ze-graphite ezifakwe i-resin ukuze kufezwe ukungenwa kwegesi kanye namandla aphezulu, kuyilapho igcina ukuhanjiswa kukagesi nokushisa okuphezulu kwe-graphite.
Okubaluleke kakhulu,Amandla e-VETisekela izidingo zomklamo wepuleti le-graphite bipolar elenziwe ngokwezifiso. Singakwazi ukugaya izinhlangothi zombili zamapuleti ukudala iziteshi zokugeleza, sisebenzise uhlangothi olulodwa kuphela, noma sinikeze amapuleti angenalutho angakasetshenziswa. Wonke amapuleti e-graphite angacutshungulwa ngokwemininingwane yakho eningiliziwe. Silangazelela eminye imibuzo yakho.
Isikhathi sokuthunyelwe: Ephreli-10-2026