Ngomnyaka we-1966, i-General Electric Company yavelisa iseli ye-electrolytic yamanzi esekelwe kwi-proton conduction concept, isebenzisa i-polymer membrane njenge-electrolyte. Iiseli ze-PEM zathengiswa nguGeneral Electric kwi-1978. Okwangoku, inkampani ivelisa iiseli ze-PEM ezimbalwa, ngokukodwa ngenxa yokuveliswa kwayo kwe-hydrogen, ubomi obufutshane kunye neendleko eziphezulu zotyalo-mali. Iseli ye-PEM inesakhiwo se-bipolar, kwaye ukudibanisa kombane phakathi kweeseli zenziwa ngeeplate ze-bipolar, ezidlala indima ebalulekileyo ekukhupheni iigesi ezenziweyo. I-anode, i-cathode, kunye neqela le-membrane yenza i-membrane ye-electrode assembly (MEA). I-electrode idla ngokuqulunqwa ngeentsimbi ezixabisekileyo ezifana neplatinum okanye iridium. Kwi-anode, amanzi afakwa kwi-oxidized ukuvelisa ioksijini, ii-electron kunye neeproton. Kwi-cathode, ioksijini, ii-electron kunye neeprotons eziveliswa yi-anode zijikeleza kwi-membrane ukuya kwi-cathode, apho ziyancipha ukuvelisa igesi ye-hydrogen. Umgaqo we-PEM electrolyzer uboniswe kumzobo.
Iiseli ze-PEM ze-electrolytic zidla ngokusetyenziselwa ukuveliswa kwe-hydrogen encinci, kunye nemveliso ephezulu ye-hydrogen malunga ne-30Nm3 / h kunye nokusetyenziswa kwamandla kwe-174kW. Xa kuthelekiswa neseli yealkaline, elona nqanaba lokuveliswa kwehydrogen kwiseli yePEM phantse igubungela lonke uluhlu olumiselweyo. Iseli ye-PEM inokusebenza kwi-A high density yangoku kune-cell alkaline, ukuya kuthi ga kwi-1.6A/cm2, kunye nokusebenza kakuhle kwe-electrolytic yi-48% -65%. Ngenxa yokuba ifilimu yepolymer ayixhathisi kubushushu obuphezulu, ubushushu beseli ye-electrolytic buhlala bungaphantsi kwama-80°C. I-electrolyzer ye-Hoeller iphuhlise itekhnoloji yomgangatho weseli ephuculweyo yee-electrolyzers ezincinci zePEM. Iiseli zinokuthi ziyilwe ngokweemfuno, ukunciphisa inani leentsimbi ezixabisekileyo kunye nokwandisa uxinzelelo lokusebenza. Inzuzo ephambili ye-PEM ye-electrolyzer kukuba imveliso ye-hydrogen itshintsha phantse ngokuhambelanayo kunye namandla anikezelweyo, afanele ukutshintshwa kwemfuno ye-hydrogen. Iiseli ze-Hoeller ziphendula kwi-0-100% yotshintsho lokulinganisa umthwalo kwimizuzwana. Itekhnoloji yelungelo elilodwa lomenzi kaHoeller iphantsi kovavanyo lokuqinisekisa, kwaye indawo yovavanyo iya kwakhiwa ekupheleni kuka-2020.
Ukucoceka kwe-hydrogen eveliswa ngamaseli e-PEM kunokuba phezulu njenge-99.99%, ephezulu kuneeseli ze-alkaline. Ukongeza, ukungeneka kwerhasi ephantsi kakhulu kwimembrane yepolymer kunciphisa umngcipheko wokwenza imixube enokutsha, ivumela i-electrolyzer ukuba isebenze kuxinzelelo oluphantsi kakhulu lwangoku. I-conductivity yamanzi enikezelwa kwi-electrolyzer kufuneka ibe ngaphantsi kwe-1S / cm. Ngenxa yokuba ukuthuthwa kweproton kuyo yonke i-polymer membrane iphendula ngokukhawuleza ekuguquguqukeni kwamandla, iiseli ze-PEM zinokusebenza ngeendlela ezahlukeneyo zobonelelo lwamandla. Nangona iseli ye-PEM iye yathengiswa, inezinye izinto ezingalunganga, ngokukodwa iindleko eziphezulu zotyalo-mali kunye neendleko eziphezulu zombini i-membrane kunye ne-electrode yensimbi exabisekileyo. Ukongezelela, ubomi benkonzo yeeseli ze-PEM bufutshane kuneeseli ze-alkaline. Kwixesha elizayo, amandla e-PEM cell ukuvelisa i-hydrogen kufuneka aphuculwe kakhulu.
Ixesha lokuposa: Feb-02-2023