Iterambere n'isesengura ry'ubukungu ku ikorwa rya hydrogen hakoreshejwe electrolysis ya oxyde zikomeye

Iterambere n'isesengura ry'ubukungu ku ikorwa rya hydrogen hakoreshejwe electrolysis ya oxyde zikomeye

Electrolyzer ya okiside ikomeye (SOE) ikoresha umwuka w'amazi ushyushye cyane (600 ~ 900°C) mu gukwirakwiza amashanyarazi, ibyo bikaba bikora neza kurusha electrolyzer ya alkaline na electrolyzer ya PEM. Mu myaka ya 1960, Leta Zunze Ubumwe za Amerika n'Ubudage batangiye gukora ubushakashatsi ku mwuka w'amazi ushyushye cyane wa SOE. Ihame ry'imikorere ya electrolyzer ya SOE rigaragazwa ku Ishusho ya 4. Hydrogen n'umwuka w'amazi byinjira mu buryo bw'imyakura biva kuri anode. Umwuka w'amazi uhinduka electrolyze muri hydrogène kuri cathode. O2 ikorwa na cathode inyura muri electrogène ikomeye ijya kuri anode, aho yongera kwihuza kugira ngo ikore ogisijeni kandi irekure electrogènes.

Bitandukanye n’uturemangingo twa alkaline na proton exchange membrane electrolytic, electrode ya SOE ikorana n’umwuka w’amazi kandi ihura n’ikibazo cyo kongera ubuso bw’aho electrode ihurira n’umwuka w’amazi. Kubwibyo, electrode ya SOE muri rusange ifite imiterere ifite imyenge. Intego ya electrolysis y’umwuka w’amazi ni ukugabanya imbaraga no kugabanya ikiguzi cyo gukora electrolysis isanzwe y’amazi. Mu by’ukuri, nubwo ingufu zose zisabwa mu ihinduka ry’amazi ziyongera gato uko ubushyuhe bwiyongera, ingufu z’amashanyarazi zigabanuka cyane. Uko ubushyuhe bw’amashanyarazi bwiyongera, igice cy’ingufu zisabwa gitangwa nk’ubushyuhe. SOE irashobora gukora hydrogen imbere y’isoko ry’ubushyuhe bwinshi. Kubera ko reactor za nucleus zikonjeshwa na gaze nyinshi zishobora gushyuha kugeza kuri 950°C, ingufu za nucleus zishobora gukoreshwa nk’isoko y’ingufu kuri SOE. Muri icyo gihe, ubushakashatsi bwerekana ko ingufu zishobora kuvugururwa nk’ingufu za geothermal nazo zifite ubushobozi bwo kuba isoko y’ubushyuhe bwa electrolysis y’umwuka. Gukorera ku bushyuhe bwinshi bishobora kugabanya voltage ya bateri no kongera umuvuduko w’ihinduka, ariko nanone bihura n’ikibazo cyo kudahinduka kw’ubushyuhe n’ifungwa ry’ibikoresho. Byongeye kandi, umwuka ukorwa na cathode ni uruvange rwa hydrogen, rugomba gutandukana no gusukurwa, bikongera ikiguzi ugereranije na electrolysis isanzwe y'amazi. Gukoresha ceramics zikora proton, nka strontium zirconate, bigabanya ikiguzi cya SOE. Strontium zirconate igaragaza imikorere myiza ya proton kuri dogere selisiyusi 700, kandi bituma cathode ikora hydrogen nziza cyane, byoroshya igikoresho cya electrolysis y'umwuka.

Yan n'abandi [6] bavuze ko umuyoboro wa zirconia ceramic uhamye na calcium oxide wakoreshejwe nk'SOE y'imiterere ishyigikira, ubuso bwo hanze bwari butwikiriwe na lanthanum perovskite nto (munsi ya 0.25mm) ifite imyenge nk'anode, na calcium oxide cermet ihamye ya Ni/Y2O3 nk'umuyoboro wa cathode. Ku bushyuhe bwa 1000°C, 0.4A/cm2 na 39.3W, ubushobozi bwo gukora hydrogen bw'iyi unit ni 17.6NL/h. Imbogamizi ya SOE ni volteji ikabije iterwa n'igihombo kinini cya ohm gikunze kugaragara mu mikoranire hagati y'uturemangingo, n'ubwinshi bwa volteji nyinshi bitewe n'imbogamizi zo gutwara umwuka ushyushye. Mu myaka ya vuba aha, uturemangingo twa electrolytic twa planar twakuruye abantu benshi [7-8]. Bitandukanye n'uturemangingo tw'imiyoboro, uturemangingo duto dutuma inganda zirushaho kuba nto kandi zikongera imikorere myiza ya hydrogen [6]. Kuri ubu, imbogamizi nyamukuru ku ikoreshwa rya SOE mu nganda ni ukudahinduka kw'uturemangingo tw'amashanyarazi mu gihe kirekire [8], kandi ibibazo byo gusaza no guhagarika amashanyarazi bishobora guterwa n'ibibazo.