Ngo-1966, i-General Electric Company yasungula iseli le-electrolytic lamanzi elisekelwe emqondweni wokuqhuba i-proton, isebenzisa i-polymer membrane njenge-electrolyte. Amaseli e-PEM athengiswa yi-General Electric ngo-1978. Njengamanje, le nkampani ikhiqiza amaseli e-PEM ambalwa, ikakhulukazi ngenxa yokukhiqizwa kwayo okulinganiselwe kwe-hydrogen, impilo emfushane kanye nezindleko eziphezulu zokutshalwa kwezimali. Iseli le-PEM linesakhiwo se-bipolar, futhi ukuxhumana kukagesi phakathi kwamaseli kwenziwa ngamapuleti e-bipolar, adlala indima ebalulekile ekukhipheni amagesi akhiqizwayo. Iqembu le-anode, i-cathode, kanye ne-membrane lakha i-membrane electrode assembly (MEA). I-electrode ivame ukwakhiwa ngezinsimbi eziyigugu njenge-platinum noma i-iridium. Ku-anode, amanzi ayaxutshwa ukuze akhiqize i-oxygen, ama-electron nama-proton. Ku-cathode, i-oxygen, ama-electron nama-proton akhiqizwa yi-anode ajikeleza nge-membrane aye ku-cathode, lapho encishiswa khona ukuze akhiqize igesi ye-hydrogen. Isimiso se-PEM electrolyzer siboniswe esithombeni.
Amaseli e-electrolytic e-PEM avame ukusetshenziselwa ukukhiqizwa kwe-hydrogen encane, ngokukhiqizwa kwe-hydrogen okuphezulu okungaba ngu-30Nm3/h kanye nokusetshenziswa kwamandla okungu-174kW. Uma kuqhathaniswa neseli le-alkaline, izinga langempela lokukhiqizwa kwe-hydrogen leseli le-PEM licishe limboze lonke ibanga elinqunyelwe. Iseli le-PEM lingasebenza ku-A current density ephezulu kuneseli le-alkaline, ngisho nakufika ku-1.6A/cm2, kanti ukusebenza kahle kwe-electrolytic kungu-48%-65%. Ngenxa yokuthi ifilimu ye-polymer ayimelani nokushisa okuphezulu, izinga lokushisa leseli le-electrolytic livame ukuba ngaphansi kuka-80°C. I-Hoeller electrolyzer ithuthukise ubuchwepheshe bomphezulu weseli obulungiselelwe ama-electrolyzer amancane e-PEM. Amaseli angaklanywa ngokwezidingo, anciphise inani lezinsimbi eziyigugu futhi andise ingcindezi yokusebenza. Inzuzo enkulu ye-PEM electrolyzer ukuthi ukukhiqizwa kwe-hydrogen kuyashintsha cishe ngokuvumelana namandla anikezwayo, okufanele ukushintsha kwesidingo se-hydrogen. Amaseli e-Hoeller asabela ekushintsheni kwesilinganiso somthwalo esingu-0-100% ngemizuzwana. Ubuchwepheshe bukaHoeller obunelungelo lobunikazi buyaqhubeka nokuhlolwa kokuqinisekiswa, futhi indawo yokuhlola izokwakhiwa ekupheleni kuka-2020.
Ubumsulwa be-hydrogen ekhiqizwa amaseli e-PEM bungaba phezulu ku-99.99%, okuphakeme kunokwamangqamuzana e-alkaline. Ngaphezu kwalokho, ukungena kwegesi okuphansi kakhulu kwe-polymer membrane kunciphisa ingozi yokwenza izingxube ezivuthayo, okuvumela i-electrolyzer ukuthi isebenze ngobuningi bamanje obuphansi kakhulu. Ukuqhuba kwamanzi anikezwa i-electrolyzer kumele kube ngaphansi kuka-1S/cm. Ngenxa yokuthi ukuthuthwa kwe-proton kuyo yonke i-polymer membrane kusabela ngokushesha ekushintsheni kwamandla, amaseli e-PEM angasebenza ngezindlela ezahlukene zokuphakelwa kwamandla. Nakuba iseli le-PEM selithengisiwe, linezinkinga ezithile, ikakhulukazi izindleko zokutshalwa kwezimali eziphezulu kanye nezindleko eziphezulu zama-electrode asekelwe ku-membrane kanye nensimbi eyigugu. Ngaphezu kwalokho, impilo yesevisi yamaseli e-PEM imfushane kunokwamangqamuzana e-alkaline. Esikhathini esizayo, amandla eseli le-PEM okukhiqiza i-hydrogen kudingeka athuthukiswe kakhulu.
Isikhathi sokuthunyelwe: Feb-02-2023