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

Solid oxide electrolyzer (SOE) na-eji ikuku mmiri dị elu (600 ~ 900 ° C) maka electrolysis, nke dị irè karịa alkaline electrolyzer na PEM electrolyzer. N'afọ ndị 1960, United States na Germany malitere ime nyocha na oke okpomọkụ mmiri vapor SOE. A na-egosi ụkpụrụ ọrụ nke SOE electrolyzer na Figure 4. hydrogen a na-emegharịgharị na ikuku mmiri na-abanye na usoro mmeghachi omume site na anode. A na-agbanye ikuku mmiri n'ime hydrogen na cathode. O2 nke cathode na-emepụta na-agafe site na electrolyte siri ike gaa na anode, ebe ọ na-ejikọta ya na-emepụta oxygen ma hapụ electrons.

N'adịghị ka alkaline na proton mgbanwe membrane electrolytic cell, SOE electrode na-emeghachi omume na kọntaktị mmiri vapor ma na-eche ihe ịma aka nke ịbawanye ebe interface dị n'etiti electrode na mmiri vapor kọntaktị. Ya mere, SOE electrode n'ozuzu nwere a porous Ọdịdị. Ebumnuche nke mmiri vapor electrolysis bụ iji belata ike ike ma belata ụgwọ ọrụ nke mmiri mmiri mmiri electrolysis. N'ezie, ọ bụ ezie na ngụkọta ike chọrọ nke mmeghachi omume mmebi mmiri na-abawanye ntakịrị na okpomọkụ na-arịwanye elu, ihe ọkụ eletrik chọrọ 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 ọkụ na-ekpo ọkụ. Ebe ọ bụ na enwere ike ikpo ọkụ ọkụ ọkụ ọkụ gas na-ekpo ọkụ na-ekpo ọkụ na 950 ° C, ike nuklia nwere ike iji dị ka isi iyi ike maka SOE. N'otu oge ahụ, nchọpụta na-egosi na ume ọhụrụ dị ka geothermal ume nwekwara ike dị ka isi iyi ọkụ nke uzuoku electrolysis. Ịrụ ọrụ na okpomọkụ dị elu nwere ike ibelata voltaji batrị ma mee ka ọnụego mmeghachi omume dịkwuo elu, mana ọ na-echekwa ihe ịma aka nke nkwụsi ike nke ihe ọkụkụ na mkpuchi. Tụkwasị na nke ahụ, gas nke cathode na-emepụta bụ ngwakọta hydrogen, nke kwesịrị ka a na-ekewapụ ya ma mee ka ọ dị ọcha, na-abawanye ọnụ ahịa ma e jiri ya tụnyere mmiri mmiri mmiri electrolysis. Ojiji nke ceramics na-eduzi proton, dị ka strontium zirconate, na-ebelata ọnụ ahịa SOE. Strontium zirconate na-egosi ezigbo proton conductivity na ihe dị ka 700 Celsius C, ma na-akwado cathode iji mepụta hydrogen dị ọcha, na-eme ka ngwaọrụ electrolysis dị mfe.

Yan et al. [6] kọrọ na zirconia seramiiki tube kwụsiri ike site na calcium oxide ka eji SOE nke nkwado nhazi, elu elu kpuchie na mkpa (ihe na-erughị 0.25mm) porous lanthanum perovskite dị ka anode, na Ni/Y2O3 m calcium oxide cermet dị ka cathode. Na 1000 ° C, 0.4A/cm2 na 39.3W ike ntinye ike, ike mmepụta hydrogen nke unit bụ 17.6NL / h. Ọdịmma nke SOE bụ oke ọkụ na-esi na mfu ohm dị elu bụ nke a na-ahụkarị na njikọ dị n'etiti sel, yana oke njupụta nke oke n'ihi njedebe nke njem mgbasa ozi vepor. N'afọ ndị na-adịbeghị anya, sel electrolytic planar adọtala mmasị dị ukwuu [7-8]. N'adịghị ka mkpụrụ ndụ tubular, sel ndị dị larịị na-eme ka nrụpụta dị kọmpat karịa ma melite arụmọrụ mmepụta hydrogen [6]. Ka ọ dị ugbu a, isi ihe mgbochi na ngwa mmepụta ihe nke SOE bụ nkwụsi ike ogologo oge nke cell electrolytic [8], na nsogbu nke ịka nká na nkwụsị nke electrode nwere ike ịkpata.