Inqubekela phambili kanye nokuhlaziywa kwezomnotho kokukhiqizwa kwe-hydrogen nge-electrolysis yama-oxide aqinile
I-Solid oxide electrolyzer (SOE) isebenzisa umhwamuko wamanzi okushisa okuphezulu (600 ~ 900°C) ukuze i-electrolysis isebenze kahle kakhulu kune-alkaline electrolyzer kanye ne-PEM electrolyzer. Ngawo-1960, i-United States kanye neJalimane baqala ukwenza ucwaningo ngomhwamuko wamanzi okushisa okuphezulu i-SOE. Isimiso sokusebenza se-SOE electrolyzer siboniswe kuMfanekiso 4. I-hydrogen ephinde yasetshenziswa kanye nomhwamuko wamanzi kungena ohlelweni lokusabela kusuka ku-anode. Umhwamuko wamanzi ufakwa ku-electrolyze ube yi-hydrogen ku-cathode. I-O2 ekhiqizwa yi-cathode ihamba nge-electrolyte eqinile iye ku-anode, lapho ihlangana khona ukuze yakhe umoya-mpilo futhi ikhulule ama-electron.
Ngokungafani namaseli e-electrolytic e-alkaline kanye ne-proton exchange membrane, i-electrode ye-SOE isabela ngokuxhumana komhwamuko wamanzi futhi ibhekene nenselele yokwandisa indawo yokuxhumana phakathi kwe-electrode kanye nokuxhumana komhwamuko wamanzi. Ngakho-ke, i-electrode ye-SOE ngokuvamile inesakhiwo esinezimbobo. Inhloso ye-electrolysis yomhwamuko wamanzi ukunciphisa amandla nokunciphisa izindleko zokusebenza kwe-electrolysis yamanzi ajwayelekile. Eqinisweni, yize isidingo samandla esiphelele sokusabela kokubola kwamanzi sikhuphuka kancane ngokushisa okwandayo, isidingo samandla kagesi siyancipha kakhulu. Njengoba izinga lokushisa le-electrolytic likhuphuka, ingxenye yamandla adingekayo inikezwa njengokushisa. I-SOE iyakwazi ukukhiqiza i-hydrogen lapho kukhona umthombo wokushisa okushisa okuphezulu. Njengoba ama-reactor enuzi apholiswe yigesi okushisa okuphezulu angashiswa ku-950°C, amandla enuzi angasetshenziswa njengomthombo wamandla we-SOE. Ngesikhathi esifanayo, ucwaningo lubonisa ukuthi amandla avuselelekayo njengamandla e-geothermal nawo anamandla njengomthombo wokushisa we-electrolysis yomphunga. Ukusebenza ekushiseni okuphezulu kunganciphisa i-voltage yebhethri futhi kwandise izinga lokusabela, kodwa futhi kubhekene nenselele yokuzinza kokushisa kwezinto kanye nokuvalwa. Ngaphezu kwalokho, igesi ekhiqizwa yi-cathode iyingxube ye-hydrogen, edinga ukuhlukaniswa nokuhlanzwa kabanzi, okwandisa izindleko uma kuqhathaniswa ne-electrolysis yamanzi ajwayelekile. Ukusetshenziswa kwe-ceramics eqhuba i-proton, njenge-strontium zirconate, kunciphisa izindleko ze-SOE. I-Strontium zirconate ikhombisa ukuhanjiswa kwe-proton okuhle kakhulu cishe ku-700°C, futhi ivumela i-cathode ukuthi ikhiqize i-hydrogen emsulwa kakhulu, okwenza kube lula ukusebenzisa i-electrolysis ye-steam.
UYan nabanye [6] babike ukuthi ithubhu le-ceramic le-zirconia eliqiniswe yi-calcium oxide lalisetshenziswa njenge-SOE yesakhiwo esisekelayo, ubuso bangaphandle babumbozwe nge-lanthanum perovskite encane (engaphansi kuka-0.25mm) enezimbobo njenge-anode, kanye ne-Ni/Y2O3 stable calcium oxide cermet njenge-cathode. Ku-1000°C, amandla okufaka angu-0.4A/cm2 kanye no-39.3W, amandla okukhiqiza i-hydrogen eyunithi angu-17.6NL/h. Ububi be-SOE yi-overvoltage ebangelwa ukulahlekelwa okuphezulu kwe-ohm okuvamile ekuxhumaneni phakathi kwamaseli, kanye nokuhlushwa okuphezulu kwe-overvoltage ngenxa yemikhawulo yokuthutha kokusabalalisa komusi. Eminyakeni yamuva nje, amaseli e-planar electrolytic adonsele ukunaka okukhulu [7-8]. Ngokungafani namaseli amashubhu, amaseli ayisicaba enza ukukhiqiza kube kuncane kakhulu futhi kuthuthukise ukusebenza kahle kokukhiqiza i-hydrogen [6]. Njengamanje, isithiyo esikhulu ekusetshenzisweni kwezimboni kwe-SOE ukuzinza kwesikhathi eside kweseli le-electrolytic [8], futhi izinkinga zokuguga kanye nokungasebenzi kwe-electrode zingase zibangelwe.
Isikhathi sokuthunyelwe: Feb-06-2023