Ngo-1966, iGeneral Electric Company yakha iseli yamanzi e-electrolytic esekelwe kumqondo we-proton conduction, isebenzisa ulwelwesi lwe-polymer njenge-electrolyte. Amaseli e-PEM athengiswa yiGeneral Electric ngo-1978. Njengamanje, inkampani ikhiqiza amaseli e-PEM ambalwa, ikakhulukazi ngenxa yokukhiqizwa kwayo okulinganiselwe kwe-hydrogen, ukuphila okufushane kanye nezindleko eziphezulu zokutshala izimali. Iseli le-PEM linesakhiwo se-bipolar, futhi ukuxhumana kukagesi phakathi kwamaseli kwenziwa ngamapuleti e-bipolar, adlala indima ebalulekile ekukhipheni amagesi akhiqiziwe. Iqembu le-anode, i-cathode, ne-membrane lakha i-membrane electrode assembly (MEA). I-electrode ngokuvamile yakhiwa izinsimbi eziyigugu njengeplatinamu noma i-iridium. Ku-anode, amanzi akhishwa nge-oxidized ukuze akhiqize umoya-mpilo, ama-electron nama-proton. Ku-cathode, umoya-mpilo, ama-electron nama-proton akhiqizwa i-anode ajikeleza ngolwelwesi aye ku-cathode, lapho encishiswa khona ukuze akhiqize igesi ye-hydrogen. Umgomo we-PEM electrolyzer uboniswa emfanekisweni.
Amaseli e-PEM e-electrolytic avame ukusetshenziselwa ukukhiqizwa kwe-hydrogen encane, ngokukhiqiza okuphezulu kwe-hydrogen okungaba ngu-30Nm3/h kanye nokusetshenziswa kwamandla okungu-174kW. Uma kuqhathaniswa neseli le-alkaline, izinga langempela lokukhiqizwa kwe-hydrogen leseli ye-PEM cishe lihlanganisa lonke umkhawulo webanga. Iseli le-PEM lingasebenza ku-A high density yamanje kuneseli le-alkaline, ngisho lifika ku-1.6A/cm2, futhi ukusebenza kahle kwe-electrolytic kungu-48% -65%. Ngenxa yokuthi ifilimu ye-polymer ayimelani nezinga lokushisa eliphezulu, izinga lokushisa leseli ye-electrolytic livamise ukuba ngaphansi kuka-80°C. I-Hoeller electrolyzer ithuthukise ubuchwepheshe bendawo yeseli elungiselelwe ama-electrolyzer amancane e-PEM. Amaseli angaklanywa ngokuvumelana nezidingo, ukunciphisa inani lezinsimbi eziyigugu futhi andise ingcindezi yokusebenza. Inzuzo enkulu ye-PEM electrolyzer ukuthi ukukhiqizwa kwe-hydrogen kushintsha cishe ngokuhambisana namandla anikeziwe, afanele ukuguqulwa kwesidingo se-hydrogen. Amaseli e-Hoeller aphendula ku-0-100% izinguquko zesilinganiso sokulayisha ngamasekhondi. Ubuchwepheshe obunelungelo lobunikazi buka-Hoeller buyahlolwa ukuqinisekiswa, futhi indawo yokuhlola izokwakhiwa ekupheleni kuka-2020.
Ukuhlanzeka kwe-hydrogen ekhiqizwa amaseli e-PEM kungaba phezulu njenge-99.99%, ephakeme kunaleyo yamaseli e-alkaline. Ngaphezu kwalokho, ukukwazi ukungena kwegesi okuphansi kakhulu kolwelwesi lwe-polymer kunciphisa ubungozi bokwenza izingxube ezivuthayo, okuvumela i-electrolyzer ukuthi isebenze ngokuminyana kwamanje okuphansi kakhulu. I-conductivity yamanzi anikezwe i-electrolyzer kufanele ibe ngaphansi kuka-1S/cm. Ngenxa yokuthi ukuthuthwa kwe-proton yonkana kulwelwesi lwe-polymer kusabela ngokushesha ekuguquguqukeni kwamandla, amaseli e-PEM angasebenza ngezindlela ezihlukene zokuphakela amandla. Nakuba iseli le-PEM selidayiswe, linobubi obuthile, ikakhulukazi izindleko eziphezulu zokutshala izimali kanye nezindleko eziphakeme zakho kokubili ulwelwesi kanye nama-electrode asekelwe ensimbi eyigugu. Ngaphezu kwalokho, impilo yesevisi yamaseli e-PEM ifushane kunaleyo yamaseli e-alkaline. Esikhathini esizayo, amandla e-PEM cell ukukhiqiza i-hydrogen adinga ukuthuthukiswa kakhulu.
Isikhathi sokuthumela: Feb-02-2023