Te ahunga whakamua me te tātari ōhanga o te hanga hauwai mā te hikohiko o ngā waikura totoka
Ka whakamahia e te mīhini hiko waikura totoka (SOE) te kohu wai pāmahana-teitei (600 ~ 900°C) mō te hiko, he pai ake tēnei i te mīhini hiko kawakore me te mīhini hiko PEM. I ngā tau 1960, ka tīmata te United States me Tiamana ki te rangahau i te SOE kohu wai pāmahana-teitei. Kei te Pikitia 4 te mātāpono mahi o te mīhini hiko SOE. Ka uru te hauwai me te kohu wai hangarua ki te pūnaha tauhohenga mai i te anode. Ka hiko te kohu wai hei hauwai i te cathode. Ka neke te O2 i hangaia e te cathode mā roto i te electrolyte totoka ki te anode, ka honoa anō ki te hanga hāora me te tuku i ngā irahiko.
He rerekē ki ngā pūtau hikohiko o te membrane whakawhiti pūmua me te kawakore, ka tauhohe te hikohiko SOE ki te pa ki te kohu wai, ā, ka anga atu ki te wero o te whakanui ake i te rohe atanga i waenga i te hikohiko me te pa ki te kohu wai. Nō reira, he hanganga porous te hikohiko SOE i te nuinga o te wā. Ko te kaupapa o te hikohiko kohu wai he whakaiti i te kaha o te pūngao me te whakaiti i te utu whakahaere o te hikohiko wai wai tikanga. Inaa, ahakoa ka piki ake te hiahia pūngao katoa o te tauhohenga pirau wai me te pikinga o te pāmahana, ka tino heke te hiahia pūngao hiko. I te pikinga o te pāmahana hikohiko, ka tukuna tetahi wāhanga o te pūngao e hiahiatia ana hei wera. Ka taea e te SOE te whakaputa hauwai i te aroaro o te pūtake wera pāmahana teitei. I te mea ka taea te whakamahana i ngā tauhohenga karihi whakamatao hau pāmahana teitei ki te 950°C, ka taea te whakamahi i te pūngao karihi hei pūtake pūngao mō te SOE. I taua wā anō, e whakaatu ana te rangahau he kaha anō hoki te pūngao whakahou pēnei i te pūngao geothermal hei pūtake wera o te hikohiko mamaoa. Ka taea e te whakahaere i te pāmahana teitei te whakaiti i te ngaohiko pākahiko me te whakanui ake i te tere tauhohenga, engari ka anga atu hoki ki te wero o te pumau wera rauemi me te hiri. Hei tāpiritanga, ko te hau e puta mai ana i te katote he ranunga hauwai, me wehe atu, me purea anō hoki, ka piki ake te utu ki te whakataurite ki te hiko wai wai noa. Mā te whakamahi i ngā uku kawe-porotini, pērā i te strontium zirconate, ka whakaiti i te utu o te SOE. He pai te kawe porotini o te strontium zirconate i te 700°C pea, ā, he pai hoki mō te katote ki te whakaputa hauwai parakore teitei, ka māmā ake te taputapu hiko mamaoa.
I kōrero a Yan et al. [6] mō te whakamahinga o te ngongo uku zirconia i whakauhia e te konupūmā waikura hei SOE mō te hanganga tautoko, i pania te mata o waho ki te perovskite lanthanum porous angiangi (iti iho i te 0.25mm) hei anode, me te konupūmā waikura Ni/Y2O3 pumau hei cathode. I te 1000°C, 0.4A/cm2 me te mana whakauru 39.3W, ko te kaha whakaputa hauwai o te waeine he 17.6NL/h. Ko te ngoikoretanga o te SOE ko te ngaohiko nui e puta mai ana i ngā ngaronga ohm teitei e kitea ana i ngā hononga i waenga i ngā pūtau, me te kukū ngaohiko nui teitei nā te herenga o te kawe horapa o te kohu. I ngā tau tata nei, kua aro nui ngā pūtau hiko papatahi [7-8]. He rerekē ki ngā pūtau ngongo, ka nui ake te kikī o te hanga me te whakapai ake i te pai o te whakaputa hauwai e ngā pūtau papatahi [6]. I tēnei wā, ko te arai matua ki te tono ahumahi o te SOE ko te pumau roa o te pūtau hiko [8], ā, tera pea ka puta ngā raruraru o te koroheketanga me te whakakorenga o te hiko.
Wā tuku: Hui-tanguru-06-2023