Ci gaba da nazarin tattalin arziki na samar da hydrogen ta hanyar electrolysis na solid oxides

Ci gaba da nazarin tattalin arziki na samar da hydrogen ta hanyar electrolysis na solid oxides

Mai ƙarfi na lantarki mai ƙarfi (SOE) yana amfani da tururin ruwa mai zafi (600 ~ 900°C) don electrolysis, wanda ya fi inganci fiye da alkaline electrolyzer da PEM electrolyzer. A cikin shekarun 1960, Amurka da Jamus sun fara gudanar da bincike kan tururin ruwa mai zafi SOE. An nuna ƙa'idar aiki ta SOE electrolyzer a Hoto na 4. Hydrogen da tururin ruwa da aka sake amfani da su suna shiga tsarin amsawa daga anode. Tururin ruwa yana juyawa zuwa hydrogen a cathode. O2 da cathode ya samar yana motsawa ta cikin electrolyte mai ƙarfi zuwa anode, inda yake sake haɗuwa don samar da iskar oxygen da sakin electrons.

Ba kamar ƙwayoyin electrolytic na membrane na musayar alkaline da proton ba, electrode na SOE yana amsawa tare da hulɗar tururin ruwa kuma yana fuskantar ƙalubalen haɓaka yankin haɗin gwiwa tsakanin electrode da hulɗar tururin ruwa. Saboda haka, electrode na SOE gabaɗaya yana da tsari mai ramuka. Manufar electrolysis na tururin ruwa shine rage ƙarfin kuzari da rage farashin aiki na electrolysis na ruwa na yau da kullun. A zahiri, kodayake jimlar buƙatar makamashi na amsawar ruɓewar ruwa yana ƙaruwa kaɗan tare da ƙaruwar zafin jiki, buƙatar makamashin lantarki yana raguwa sosai. Yayin da zafin jiki na electrolytic ke ƙaruwa, ana samar da wani ɓangare na kuzarin da ake buƙata azaman zafi. SOE yana da ikon samar da hydrogen a gaban tushen zafi mai zafi. Tunda ana iya dumama masu karɓar nukiliya masu sanyaya iskar gas zuwa 950°C, ana iya amfani da makamashin nukiliya azaman tushen makamashi ga SOE. A lokaci guda, binciken ya nuna cewa makamashin da ake sabuntawa kamar makamashin geothermal suma suna da yuwuwar zama tushen zafi na electrolysis na tururi. Yin aiki a babban zafin jiki na iya rage ƙarfin baturi da ƙara yawan amsawa, amma kuma yana fuskantar ƙalubalen kwanciyar hankali da rufewa na zafi na abu. Bugu da ƙari, iskar gas da cathode ke samarwa cakuda hydrogen ne, wanda ke buƙatar a ƙara raba shi da tsarkake shi, wanda ke ƙara farashi idan aka kwatanta da electrolysis na ruwa na yau da kullun. Amfani da yumbu masu gudanar da proton, kamar strontium zirconate, yana rage farashin SOE. Strontium zirconate yana nuna kyakkyawan tasirin proton a kusan 700°C, kuma yana taimakawa cathode don samar da hydrogen mai tsarki, yana sauƙaƙa na'urar electrolysis ta tururi.

Yan et al. [6] sun ruwaito cewa bututun yumbu na zirconia wanda calcium oxide ya daidaita an yi amfani da shi azaman SOE na tsarin tallafi, an rufe saman waje da siririn lanthanum perovskite mai ramuka (ƙasa da 0.25mm) a matsayin anode, da kuma Ni/Y2O3 stable calcium oxide cermet a matsayin cathode. A 1000°C, 0.4A/cm2 da 39.3W ƙarfin shigarwa, ƙarfin samar da hydrogen na na'urar shine 17.6NL/h. Rashin SOE shine yawan ƙarfin lantarki da ke fitowa daga asarar ohm mai yawa wanda ya zama ruwan dare a haɗin kai tsakanin ƙwayoyin halitta, da kuma yawan yawan ƙarfin lantarki mai yawa saboda iyakokin jigilar tururi. A cikin 'yan shekarun nan, ƙwayoyin lantarki masu siffar planar sun jawo hankali sosai [7-8]. Sabanin ƙwayoyin tubular, ƙwayoyin lebur suna sa masana'antu su ƙara ƙanƙanta kuma su inganta ingancin samar da hydrogen [6]. A halin yanzu, babban cikas ga aikace-aikacen masana'antu na SOE shine kwanciyar hankali na dogon lokaci na ƙwayar electrolytic [8], kuma matsalolin tsufa da kashe wutar lantarki na iya haifar da hakan.