Ngo-1966, iGeneral Electric Company yaphuhlisa iseli ye-electrolytic yamanzi ngokusekelwe kwingcamango yokuhanjiswa kweproton, isebenzisa i-polymer membrane njenge-electrolyte. Iiseli ze-PEM zathengiswa yiGeneral Electric ngo-1978. Okwangoku, le nkampani ivelisa iiseli ze-PEM ezimbalwa, ikakhulu ngenxa yemveliso yayo encinci ye-hydrogen, ubomi obufutshane kunye neendleko eziphezulu zotyalo-mali. Iseli ye-PEM inesakhiwo se-bipolar, kwaye unxibelelwano lombane phakathi kweeseli lwenziwa ngee-bipolar plates, ezidlala indima ebalulekileyo ekukhupheni iigesi eziveliswayo. I-anode, i-cathode, kunye neqela le-membrane zakha i-membrane electrode assembly (MEA). I-electrode idla ngokwenziwa ngeesinyithi ezixabisekileyo ezifana neplatinum okanye i-iridium. Kwi-anode, amanzi ayaxiliswa ukuvelisa i-oxygen, ii-electron kunye nee-proton. Kwi-cathode, i-oxygen, ii-electron kunye nee-proton eziveliswa yi-anode zijikeleza nge-membrane ukuya kwi-cathode, apho zincitshiswa khona ukuvelisa i-hydrogen gas. Umgaqo we-PEM electrolyzer uboniswe kumfanekiso.
Iiseli ze-electrolytic ze-PEM zihlala zisetyenziselwa ukuvelisa i-hydrogen encinci, enemveliso ephezulu ye-hydrogen emalunga ne-30Nm3/h kunye nokusetyenziswa kwamandla kwe-174kW. Xa kuthelekiswa neseli ye-alkaline, izinga lokwenyani lemveliso ye-hydrogen yeseli ye-PEM liphantse ligubungele lonke uluhlu olulinganiselweyo. Iseli ye-PEM inokusebenza kwi-A current density ephezulu kuneseli ye-alkaline, ukuya kuthi ga kwi-1.6A/cm2, kwaye ukusebenza kakuhle kwe-electrolytic yi-48%-65%. Ngenxa yokuba ifilimu ye-polymer ayimelani nobushushu obuphezulu, ubushushu beseli ye-electrolytic buhlala bungaphantsi kwama-80°C. I-Hoeller electrolyzer iphuhlise iteknoloji yomphezulu weseli elungiselelwe ii-electrolyzers ezincinci ze-PEM. Iiseli zinokuyilwa ngokweemfuno, zinciphisa ubungakanani beesinyithi ezixabisekileyo kwaye zonyuse uxinzelelo lokusebenza. Inzuzo ephambili ye-PEM electrolyzer kukuba imveliso ye-hydrogen itshintsha phantse ngokulinganayo namandla anikiweyo, afanelekileyo ukutshintsha kwemfuno ye-hydrogen. Iiseli ze-Hoeller ziphendula kutshintsho lomlinganiselo womthwalo we-0-100% kwimizuzwana. Ubuchwepheshe obunelungelo lomenzi wechiza likaHoeller buvavanywa ngokuqinisekiswa, kwaye indawo yokuvavanya iza kwakhiwa ekupheleni kuka-2020.
Ubumsulwa be-hydrogen eveliswa ziiseli ze-PEM bunokuba phezulu ukuya kwi-99.99%, nto leyo ephezulu kuneyeeseli ze-alkaline. Ukongeza, ukutyibilika kwegesi okuphantsi kakhulu kwe-polymer membrane kunciphisa umngcipheko wokwenza imixube evuthayo, okuvumela i-electrolyzer ukuba isebenze kwi-current densities ephantsi kakhulu. Ukuqhuba kwamanzi anikezelwa kwi-electrolyzer kufuneka kube ngaphantsi kwe-1S/cm. Ngenxa yokuba ukuthuthwa kweproton kwi-polymer membrane kusabela ngokukhawuleza ekutshintsheni kwamandla, iiseli ze-PEM zinokusebenza ngeendlela ezahlukeneyo zokubonelela ngombane. Nangona iseli ye-PEM iye yathengiswa, ineengxaki ezithile, ikakhulu iindleko eziphezulu zotyalo-mali kunye neendleko eziphezulu zee-membrane kunye nee-electrode ezisekelwe kwisinyithi esixabisekileyo. Ukongeza, ubomi benkonzo yeeseli ze-PEM bufutshane kunobo beeseli ze-alkaline. Kwixesha elizayo, amandla eseli ye-PEM okuvelisa i-hydrogen kufuneka aphuculwe kakhulu.
Ixesha lokuthumela: Feb-02-2023