Chithovu Chachitsulo - Kupititsa patsogolo Kugwira Ntchito Kwa Ma cell a Mafuta Ozizira

Wochita malondazitsulo zitsulopanopa ndi zabwino kuthekera njira ochiritsira ochiritsira ochiritsira maselo mafuta chifukwa cha porous microstructure awo, mkulu porosity, ndi wabwino makina mphamvu.
Choyamba, ntchito ya polarization ya batri pansi pazikhalidwe zogwirira ntchito pa kutentha kwa firiji idawunikidwa. Poganizira kuti cathode ndi elekitirodi waukulu kuti amaletsa ntchito batire, ochiritsira kufanana otaya njira ntchito anode wa maselo amodzi, ndi ochiritsira kufanana otaya njira ntchito cathode ndi latsopano faifi tambala-zitsulo thovu otaya kumunda, motero.
Kuti awonetsere momveka bwino kusiyana kwa kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe kake. magwiridwe antchito, motero, magwiridwe antchito a cell polarization sanali apamwamba. Kuphatikiza apo, MEA yomweyo (Nafion-112) idagwiritsidwa ntchito pama cell onse pakuyesa. Chifukwa cha kupindika kwapamwamba kwa njira yaying'ono yotaya mumayendedwe azitsulo zachitsulo, kutsika kwapakati pa malekezero onse awiri ndikokwera kwambiri poyerekeza ndi njira yosavuta yowongoka yayitali m'munda wanthawi zonse, womwe umathandizira kutulutsa mpweya ku cathode, kuthamanga, komanso kuchuluka kwa electrochemical reaction, ndipo nthawi yomweyo, imayenera kuwononga mphamvu ya injini ya gasi kwambiri pamlingo wina ndikuwonjezera kutayika kwa kupopera. The pazipita mphamvu kachulukidwe ndi apamwamba kwa maselo ndichitsulo thovuotaya minda, pamene otsika mafunde, mphamvu kachulukidwe ndi pang'ono otsika kuposa ochiritsira otaya kumunda maselo. Ponseponse, ubwino wogwiritsa ntchito gawo lachitsulo lotulutsa thovu likadali lofunikira. M'kupita kwa nthawi, chifukwa cha kuchuluka kwa mpweya ndi madzi amadzimadzi omwe amatuluka m'munda wazitsulo zachitsulo, gawo lalifupi lingagwiritsidwe ntchito pogwiritsira ntchito, kapena kugwiritsa ntchito cathode ndi anode vertical cross-supply (gasi ya anode imayenda mozungulira mbali yayitali ya njira yachikhalidwe, mpweya wa cathode umayenda motsatira mbali yaifupi ya malo otulutsa thovu), zomwe zimachepetsanso kutayika kwa kupopera komwe kumachitika chifukwa cha kulowera kwa cathode ndi kutsika kwamphamvu, motero akuyembekezeka zindikirani kupititsa patsogolo kwa magwiridwe antchito a batri, komanso kukhalabe ndi mphamvu zofananira kapena zochulukirapo kuposa njira yanthawi zonse, yomwe imatha kukwaniritsidwa pakapita nthawi. Chifukwa chake, akuyembekezeka kuzindikira kupititsa patsogolo magwiridwe antchito a cell ndikusunga kutayika kwa kupopa kofananira kapena kutsika kuposa komwe kumayendera kwanthawi yayitali.
Komano, kuti tithane ndi vuto la sub-zero poyambira, timafanizira bwino momwe ma cell amafuta amagwirira ntchito ndi malo otaya zitsulo za thovu ndi njira yofananira yoyendera pa cathode pansi pamitundu yonse yamakono komanso yokhazikika, motsatana.
Kumbali ina, kwa chikhalidwe choyambira chapansi pa ziro, timafanizira bwino momwe ma cell amafuta amayambira ndi malo otaya zitsulo za thovu ndi njira yofananira yoyenda pa cathode pansi pamitundu yonse yamakono komanso yokhazikika, motero.
Malo otulutsa thovu-zitsulo akuwonetsa zabwino kwambiri, ndi magwiridwe antchito okhazikika a cell poyambira ndikuyambitsa bwino, pomwe m'malo mwake, cell yofananira-yoyenda yamagetsi, yokhala ndi magetsi otsika komanso osakhazikika a cell panthawi yogwira ntchito, imathandizira kupanga kutentha komanso kutentha. kukwera pang'onopang'ono, koma chifukwa cha njira zocheperako zoyenda, kuthekera kwa icing ndi kutsekeka kumawonjezeka motsatira (malingana ndi kuchuluka kwa njira zoyendetsera), zomwe zimapangitsa kuti ma cell asinthe magwiridwe antchito ake. kuthekera kwa kutsekeka kwa ayezi kumawonjezeka motsatira (kutengera kuchuluka kwa njira zoyendera), zomwe zimapangitsa kusinthasintha kwa magwiridwe antchito a cell ndikuwonjezera mwayi woyambitsa kulephera.
Mwachidule, kwambiri porous dongosolo la mafuta selo ndichitsulo cha thovuFlow field ili ndi zabwino zambiri kuposa selo yokhala ndi njira yachikhalidwe ya "ngalande-ridge" pansi pa kutentha kwa chipinda komanso zoyambira zoyambira pansi pa zero.
Kuchulukana kwamphamvu kwamphamvu komanso kuchulukira komaliza kwa batire kutentha kwachipinda kumawonjezeka ndi 25%;
Pansi pazigawo zoyambira pansi pa zero, magwiridwe antchito a mabatire okhala ndi chitsulo chachitsulo chotulutsa thovu amakhala bwino poyambira, ndipo kuthekera kodziyambitsa kocheperako kumakhala bwino kwambiri.
Kuphatikiza apo, kugwiritsa ntchito mankhwala okhathamiritsa kwambiri azinthu zachitsulo za thovu, monga plating ya golide kuti apititse patsogolo madulidwe, njira zoyenera zothanirana ndi hydrophobicity ndi dzimbiri, komanso kugwiritsa ntchitozipangizo za thovundi kukula kokwanira kwa pore, porosity, ndi compression ratios, ikuyembekezeka kulimbikitsanso magwiridwe antchito a cell yamafuta ndikuwonjezera kulimba kwa kuzungulira kozizira.