Inkqubela phambili kunye nohlalutyo lwezoqoqosho lwemveliso ye-hydrogen nge-electrolysis ye-oxides eqinile
I-solid oxide electrolyzer (SOE) isebenzisa umphunga wamanzi obushushu obuphezulu (600 ~ 900 ° C) kwi-electrolysis, esebenza ngakumbi kune-alkaline electrolyzer kunye ne-PEM electrolyzer. Ngeminyaka yoo-1960, iUnited States neJamani zaqala ukwenza uphando ngobushushu obuphezulu bomphunga wamanzi weSOE. Umgaqo osebenzayo we-SOE electrolyzer uboniswe kwi-Figure 4. I-hydrogen ehlaziyiweyo kunye nomphunga wamanzi zingena kwinkqubo yokusabela kwi-anode. Umphunga wamanzi ufakwa kwi-electrolyzed kwi-hydrogen kwi-cathode. I-O2 eveliswa yi-cathode ihamba nge-electrolyte eqinile ukuya kwi-anode, apho iphinda idibanise ukwenza i-oksijini kwaye ikhulule ii-electron.
Ngokungafaniyo nealkaline kunye neproton exchange membrane electrolytic cells, i-SOE electrode isabela ngokudibana nomphunga wamanzi kwaye ijongene nomngeni wokwandisa indawo yojongano phakathi kwe-electrode kunye noqhagamshelwano lomphunga wamanzi. Ngoko ke, i-electrode ye-SOE ngokubanzi inesakhiwo se-porous. Injongo ye-electrolysis yomphunga wamanzi kukunciphisa amandla ombane kunye nokunciphisa iindleko zokusebenza ze-electrolysis yamanzi yesiqhelo. Ngapha koko, nangona imfuno yamandla ewonke kwimpendulo yokubola kwamanzi inyuka kancinci ngokunyuka kwamaqondo obushushu, imfuno yamandla ombane iyancipha kakhulu. Njengoko ubushushu be-electrolytic busanda, inxalenye yamandla afunekayo inikezelwa njengobushushu. I-SOE iyakwazi ukuvelisa i-hydrogen phambi komthombo wobushushu obuphezulu. Kuba iireactors zegesi ezipholileyo ezinobushushu obuphezulu zinokufudunyezwa ukuya kuma-950°C, amandla enyukliya anokusetyenziswa njengomthombo wamandla we-SOE. Kwangaxeshanye, uphando lubonisa ukuba amandla ahlaziyekayo njengamandla e-geothermal nawo anokubakho njengomthombo wobushushu we-electrolysis yomphunga. Ukusebenza kwiqondo lobushushu eliphezulu kunokunciphisa amandla ombane webhetri kunye nokunyusa izinga lokuphendula, kodwa kukwajongene nomngeni wokuzinza kwe-thermal kunye nokutywinwa. Ukongeza, igesi eveliswa yi-cathode ngumxube we-hydrogen, ekufuneka iphinde yahlulwe kwaye ihlanjululwe, inyusa iindleko xa kuthelekiswa ne-electrolysis yamanzi eqhelekileyo. Ukusetyenziswa kwe-proton-conducting ceramics, njenge-strontium zirconate, kunciphisa iindleko ze-SOE. I-Strontium zirconate ibonisa i-proton conductivity egqwesileyo malunga ne-700 ° C, kwaye ihambelana ne-cathode ukuvelisa i-hydrogen ephezulu yokucoceka, ukwenza lula isixhobo se-electrolysis yomphunga.
Yan et al. [6] ingxelo yokuba i-zirconia ityhubhu ye-ceramic eqiniswe yi-calcium oxide yayisetyenziswe njenge-SOE yesakhiwo esixhasayo, indawo yangaphandle yayigqunywe nge-thin (ngaphantsi kwe-0.25mm) i-lanthanum perovskite e-porous njenge-anode, kunye ne-Ni / Y2O3 i-stable calcium oxide cermet njenge-cathode. Kwi-1000 ° C, i-0.4A / cm2 kunye ne-39.3W amandla okufaka amandla, amandla okuvelisa i-hydrogen yeyunithi yi-17.6NL / h. Ukungalungi kwe-SOE kukugqithiswa okubangelwa yilahleko ephezulu ye-ohm eqhelekileyo ekudibaneni phakathi kweeseli, kunye nokuxinwa kwe-overvoltage ephezulu ngenxa yokunciphisa ukuthuthwa kokusasazwa komphunga. Kwiminyaka yakutshanje, iiseli ze-electrolytic ezicwangcisiweyo ziye zatsala ingqalelo enkulu [7-8]. Ngokuchaseneyo neeseli ze-tubular, iiseli ezisicaba zenza imveliso ihlangane kwaye iphucule ukusebenza kakuhle kwemveliso ye-hydrogen [6]. Okwangoku, umqobo oyintloko kwi-industrial application ye-SOE ukuzinza kwexesha elide kwiseli ye-electrolytic [8], kwaye iingxaki zokuguga kwe-electrode kunye nokucima kunokubangelwa.
Ixesha lokuposa: Feb-06-2023