Ọganihu na nyocha akụ na ụba nke mmepụta hydrogen site na electrolysis nke oxides siri ike

Ọganihu na nyocha akụ na ụba nke mmepụta hydrogen site na electrolysis nke oxides siri ike

Electrolyzer siri ike nke oxide (SOE) na-eji uzu mmiri dị elu (600 ~ 900°C) eme electrolysis, nke dị irè karịa alkaline electrolyzer na PEM electrolyzer. Na afọ 1960, United States na Germany malitere ime nnyocha na uzu mmiri dị elu nke SOE. E gosiri ụkpụrụ ọrụ nke SOE electrolyzer na Foto nke 4. Hydrogen na uzu mmiri a na-emegharị emegharị na-abanye na sistemụ mmeghachi omume site na anode. A na-agbanwe uzu mmiri ahụ ka ọ bụrụ hydrogen na kathode. O2 nke kathode mepụtara na-agafe site na electrolyte siri ike gaa na anode, ebe ọ na-ejikọtaghachi iji mepụta oxygen ma wepụta electrons.

N'adịghị ka mkpụrụ ndụ electrolytic alkaline na proton exchange membrane, electrode SOE na-emeghachi omume na kọntaktị uzuoku mmiri ma na-eche ihe ịma aka nke ime ka mpaghara njikọ dị n'etiti electrode na kọntaktị uzuoku mmiri dịkwuo elu. Ya mere, electrode SOE na-enwekarị nhazi oghere. Ebumnuche nke electrolysis uzuoku mmiri bụ ibelata ike ike ma belata ọnụ ahịa ọrụ nke electrolysis mmiri mmiri mmiri nkịtị. N'ezie, ọ bụ ezie na mkpokọta ike achọrọ nke mmeghachi omume nke mmiri na-agbasa na-abawanye ntakịrị ka okpomọkụ na-abawanye, ihe achọrọ maka ike eletrik na-ebelata nke ukwuu. Ka okpomọkụ electrolytic na-abawanye, a na-enye akụkụ nke ike achọrọ dị ka okpomọkụ. SOE nwere ike imepụta hydrogen n'ihu isi iyi okpomọkụ dị elu. Ebe ọ bụ na enwere ike ikpo ọkụ reactor nuklia nke gas dị elu ruo 950°C, enwere ike iji ike nuklia dị ka isi iyi ike maka SOE. N'otu oge ahụ, nyocha ahụ na-egosi na ike mmeghari ohuru dị ka ike geothermal nwekwara ike dị ka isi iyi okpomọkụ nke electrolysis uzuoku. Ịrụ ọrụ na okpomọkụ dị elu nwere ike ibelata voltaji batrị ma mụbaa ọnụego mmeghachi omume, mana ọ na-echekwa ihe ịma aka nke nkwụsi ike okpomọkụ na mkpuchi ihe. Tinyere nke ahụ, gas nke katode na-emepụta bụ ngwakọta hydrogen, nke kwesịrị ka a kewapụ ma sachaa ya nke ọma, na-eme ka ọnụ ahịa ya dịkwuo elu ma e jiri ya tụnyere electrolysis mmiri mmiri nkịtị. Ojiji nke seramiiki proton na-eduzi, dị ka strontium zirconate, na-ebelata ọnụ ahịa SOE. Strontium zirconate na-egosi ezigbo ike proton na ihe dị ka 700°C, ọ na-emekwa ka katode ahụ nwee ike ịmepụta hydrogen dị ọcha nke ukwuu, na-eme ka ngwaọrụ electrolysis steam dị mfe.

Yan na ndị otu ya [6] kọrọ na e jiri zirconia seramiiki tube nke calcium oxide kwụsiri ike mee ihe dị ka SOE nke nhazi nkwado, e ji obere lanthanum perovskite dị warara (erughị 0.25mm) kpuchie elu mpụta ahụ dị ka anode, na Ni/Y2O3 stable calcium oxide cermet dị ka cathode. Na ike ntinye 1000°C, 0.4A/cm2 na 39.3W, ikike mmepụta hydrogen nke unit ahụ bụ 17.6NL/h. Ihe na-adịghị mma nke SOE bụ oke voltaji sitere na nnukwu mfu ohm nke a na-ahụkarị na njikọ dị n'etiti sel, na oke oke voltaji n'ihi oke nke mbufe mgbasa nke uzuoku. N'afọ ndị na-adịbeghị anya, sel electrolytic planar adọtala ọtụtụ uche [7-8]. N'adịghị ka sel tubular, sel dị larịị na-eme ka mmepụta dịkwuo obere ma melite arụmọrụ mmepụta hydrogen [6]. Ugbu a, ihe mgbochi bụ isi na ojiji ụlọ ọrụ nke SOE bụ nkwụsi ike ogologo oge nke sel electrolytic [8], nsogbu nke ịka nká na mwepụ elektrọd nwere ike ibute.