I. Indima Ephambili Yeeplate ZeGraphite Bipolar KwiNqanaba Leshishini
Ngokuchasene neenjongo "zekhabhoni ezimbini" kunye nophuhliso olukhawulezileyo loqoqosho lwe-hydrogen, iiseli zamafutha (ingakumbi iiseli zamafutha ze-PEM) ziyaguquka ukusuka kwisigaba sokubonisa ukuya kwisicelo esikhulu. Ukusuka kwizithuthi zabakhweli ukuya kwiinkqubo zokuvelisa umbane ezisasazwe, ukusebenza kakuhle kwenkqubo, ixesha lokuphila, kunye neendleko zeeseli zamafutha ziba zizibonakaliso eziphambili zokhuphiswano kushishino.
Kule nkqubo, i-graphite bipolar plate ayisiyonto nje "encedisayo," kodwa yenye yezona zinto ziphambili ezisebenzayo ezimisela ukusebenza kwe-fuel cell stack. Uphando lubonisa ukuba ii-bipolar plates zimalunga ne-60-80% yobunzima kunye ne-40-50% yexabiso le-fuel cell stack; uyilo lwazo kunye nokukhethwa kwezinto zichaphazela ngokuthe ngqo uxinano lwamandla enkqubo, ukuqina, kunye neendleko zokuvelisa.
Ngokwembono yendlela yokusebenza, iiplate ze-graphite bipolar zifezekisa i-electrochemical reaction ezinzileyo neqhubekayo yeeseli zamafutha ngokudibanisa kakhulu imisebenzi emininzi-kuquka "ukuhanjiswa kwangoku, ukusasazwa kwegesi, ulawulo lobushushu, kunye nenkxaso yesakhiwo"-okuzenza zibe "yinxalenye ephambili yokudibanisa i-multi-physics" ngaphakathi kwe-stack.
II. Indima kunye neMigaqo yokusebenza kweePlates zeGraphite Bipolar kwiiSeli zeFuel
Kwi-proton exchange membrane fuel cell eqhelekileyo (PEMFC), ii-graphite bipolar plates zifumaneka kumacala omabini e-membrane electrode assembly (MEA), zidibanisa imisebenzi yeeyunithi ze-fuel cell ezidityaniswe ngochungechunge ngesakhiwo sazo esinamacala amabini.
Umgaqo wayo wokusebenza unokuqondwa ngeenkqubo ezine ezilandelayo ezidibeneyo:
Okokuqala yindlela yokuqokelelwa nokuhanjiswa kwamandla angoku. Ngexesha lokusabela kweseli yamafutha, i-hydrogen ilahlekelwa zii-electron kwi-anode, kwaye ezi electron zikhutshwa njengamandla ngesekethe yangaphandle. I-bipolar plate inoxanduva lokukhokela ii-electron ukusuka kwiseli enye ukuya kwenye. Ukuhanjiswa kombane okungaphakathi kwe-graphite kunokufikelela kumyalelo we-10⁴ S/cm, okunciphisa kakhulu ilahleko ze-ohmic kwaye ngaloo ndlela kuphucule ukusebenza kakuhle kwenkqubo.
Okwesibini yindlela yokuthutha i-reactant kunye nolawulo lwentsimi yokuhamba. Umphezulu we-bipolar plate ucutshungulwe ngemijelo yokuhamba ngokuchanekileyo ukuze kusasazwe i-hydrogen nomoya ngokulinganayo kwaye kususwe amanzi aveliswa yi-reaction. Le nkqubo ngokuyintloko yingxaki yokulawula ukuhamba kwegesi-ulwelo olunezigaba ezimbini, kwaye uyilo lwayo luchaphazela ngokuthe ngqo ukusebenza kakuhle kokudluliselwa kobuninzi kunye nokuzinza kokusebenza kwebhetri.
Okwesithathu yindlela yokulawula ubushushu. Iiseli zepetroli zivelisa ubushushu ngexesha lokusebenza; ukuba obu bushushu abunakusasazeka ngempumelelo, buya kukhokelela kwiindawo ezishushu ezikwindawo ethile kwaye bukhawulezise ukuguga kwe-membrane electrode. Ukuqhuba kakuhle kobushushu beGraphite kuyivumela ukuba isasaze ubushushu ngokukhawuleza nangokulinganayo ngaphakathi kwindiza, ngaloo ndlela igcina intsimi yobushushu ezinzileyo ngaphakathi kwi-stack.
Okokugqibela, kukho indlela yokutywina kunye nokwahlukanisa. Ngokusebenzisa uyilo lwesakhiwo kunye nenkqubo yokutywina edibeneyo, ipleyiti ye-bipolar iqinisekisa ukwahlulwa okungqongqo kwe-hydrogen kunye ne-oxygen, ithintela ukungcoliswa kwegesi. Oku akuchaphazeli nje kuphela ukusebenza kakuhle kodwa kukwachaphazela ngqo ukhuseleko lwenkqubo.
Ngamafutshane, umgaqo wokusebenza kweeplate ze-graphite bipolar awuyonkqubo enye ebonakalayo, kodwa sisiphumo sokusebenzisana kwe-synergistic kwenkqubo edibeneyo yamacandelo amaninzi equka izinto zombane, ubushushu, ukuhamba, kunye nolwakhiwo.
III. Kutheni Ukhetha I-Graphite: Uhlalutyo lweeMpawu zoBuchule eziPhambili
I-Graphite iye yaba yinto esetyenziswa kakhulu kwi-bipolar plate, kwimbali nanamhlanje, ngenxa yeenzuzo zayo ezibanzi kwiindlela ezininzi zokulinganisa ukusebenza eziphambili.
Ngokuphathelele iipropati zombane, i-graphite ibonisa ukuhanjiswa kombane okugqwesileyo; isakhiwo sayo esineengqimba sinika indlela eqhubekayo yokuthutha ii-electron, nto leyo eyenza ukuba ibe yinto efanelekileyo yokufikelela kwiinkcukacha zobugcisa ze-DOE (ukuhanjiswa kombane > 100 S/cm).
Ngokuphathelele ukuzinza kweekhemikhali, i-graphite ibonakalisa ukumelana nokugqwala okugqwesileyo. Kwimeko-bume ye-asidi kunye namathuba aphezulu eeseli zamafutha, izinto zesinyithi zihlala zigqwala kwaye zenze iileya zokungashukumi, ngaloo ndlela zonyusa ukumelana nokuqhagamshelana. Ngokwahlukileyo koko, i-graphite ine-chemical ine-inertness yendalo, evumela ukusebenza okuzinzileyo ixesha elide.
Ngokuphathelele iipropati zobushushu, i-graphite inomoya ophezulu wokushisa, okunceda ukufezekisa ukusasazwa kobushushu obufanayo ngaphakathi kwe-stack kwaye uthintele umonakalo kwi-membrane electrode ebangelwa kukushisa kakhulu kwendawo.
Ngaphezu koko, i-graphite ineempawu ezintle kakhulu zokuthintela igesi (ezinokwandiswa ngakumbi ngokufaka i-hydrogen kunye ne-oxygen), ithintela ngokufanelekileyo ukungena kwe-hydrogen kunye ne-oxygen kwaye iqinisekisa ukuthembeka kwenkqubo.
Nangona kunjalo, ngokwembono yobunjineli, i-graphite inemida ebalulekileyo. Umzekelo, ibuthathaka kakhulu, kunzima ukuyicubungula, kwaye idla ngokufuna ubukhulu beemilimitha ezininzi (>2–5 mm), nto leyo ethintela imizamo yokufezekisa uyilo lwezitaki ezilula nezinamandla aphezulu. Ngenxa yoko, ezinye iindlela ze-graphite kunye nesinyithi ziye zaba yinto ephambili kuphando kwiminyaka yakutshanje.
IV. Iindlela Zoshishino Nembono Yekamva
Njengoko ukuthengiswa kwee-fuel cells kukhawulezisa, iteknoloji ye-bipolar plate iyaqhubeka nophuhliso olukhawulezileyo, kwaye uphuhliso lwayo luqhutywa ngokucacileyo zizinto ezisetyenziswayo kunye nophuhliso lokwenziwa.
Kwelinye icala, kwizithuthi zabakhweli kunye nokusetyenziswa kwamandla aphezulu, eli shishini litshintsha kancinci kancinci ukusuka kwiiplate ze-graphite bipolar zemveli ukuya kwiiplate ze-bipolar zesinyithi (ezifana nentsimbi engagqwaliyo kunye nee-titanium alloys). Ezi zinto zinokufikelela kubukhulu obungaphantsi kwemilimitha, kwaye iinkqubo zokustampa zinciphisa kakhulu iindleko zokuvelisa, ngaloo ndlela zihlangabezana neemfuno zemveliso enkulu.
Kwelinye icala, iiplate ze-graphite composite bipolar zivela njengesisombululo esiphambili sotshintsho. Ngokufaka izizalisi zokuqhuba ezifana neeresini kunye neetyhubhu ze-carbon nanotubes, ezi zinto zinokugcina umbane ophezulu kunye nokumelana nokugqwala ngelixa ziphucula amandla oomatshini kwaye zinciphisa iindleko zokucubungula.
Kwangaxeshanye, ubuchwepheshe obuphambili bokuvelisa (obufana nokuvelisa izinto ezongezelelweyo) buqhuba uyilo lweendlela zokuhamba kweepleyiti ze-bipolar ukuya kubunzima obukhulu kunye nokusebenza kakuhle, ngaloo ndlela kuphucula ukusebenza ngokubanzi kunye nokusebenza kakuhle kwamandla kweeseli zamafutha.
Kwixesha elide, iiplate ze-graphite bipolar ziya kuhlala zikhuphisana kwezi ndawo zilandelayo:
● Iinkqubo zokuvelisa umbane ezingaguqukiyo (apho iindleko kunye nobomi bexesha ziyizinto ezibalulekileyo)
● Usetyenziso lwamandla aphantsi ukuya kwaphakathi
● Iinkqubo ze-electrochemical ze-alkaline okanye imeko yokusebenza ethile
Njengomvelisi ohamba phambili waseTshayina kunye nomthengisi weiiplate ze-graphite bipolar, I-Ningbo VET Energy iphuhlise iiplate ze-graphite bipolar eziphambili ze-PEMFCs ezingabizi kakhulu, eziqhuba kakuhle, kwaye ziqinileyo ngoomatshini. I-VET Energy ikwabonelela ngezixhobo ze-graphite ezifakwe i-resin ukuze kufezekiswe ukungakwazi ukungena kwegesi kunye namandla aphezulu, ngelixa igcina ukuhanjiswa kombane kunye nobushushu okuphezulu kwe-graphite.
Okubaluleke ngakumbi,Amandla e-VETixhasa iimfuno zoyilo lwe-graphite bipolar plate eyenzelwe wena. Singasebenza ngomatshini macala omabini eepleyiti ukwenza imijelo yokuhamba, sisebenze ngecala elinye kuphela, okanye sinikezele ngeepleyiti ezingenanto ezingafakwanga ngomatshini. Zonke iipleyiti ze-graphite zinokucutshungulwa ngokweenkcukacha zakho. Silangazelela imibuzo yakho engakumbi.
Ixesha lokuthumela: Epreli-10-2026