Muyezo watsopano waukadaulo wobiriwira wa hydrogen wokhazikitsidwa ndi mainjiniya a Rice University.
Mainjiniya a Rice University akhoza kutembenuka kuwala kwa dzuwa kulowa haidrojeni ndi luso loswa mbiri chifukwa cha chipangizo chomwe chimaphatikiza m'badwo wotsatira halide perovskite semiconductors* ndi electrocatalysts mu chipangizo chimodzi, cholimba, chotsika mtengo komanso chowongoka.
Malinga ndi phunziro lofalitsidwa mu Nature Communications, chipangizocho chinapindula ndi 20.8% kutembenuka kwa dzuwa kupita ku haidrojeni.
Tekinoloje yatsopanoyi ndi sitepe yofunika kwambiri yopangira mphamvu zoyera ndipo ikhoza kukhala nsanja yamitundu yosiyanasiyana yamankhwala omwe amagwiritsa ntchito magetsi opangidwa ndi dzuwa kuti atembenuke. feedstocks mu mafuta.
Labu ya Injiniya wa Chemical ndi Biomolecular Aditya Mohite anamanga Integrated photoreactor ntchito anticorrosion chotchinga kuti insulates semiconductor madzi popanda kulepheretsa kusamutsa ma elekitironi.
"Kugwiritsa ntchito kuwala kwa dzuwa ngati gwero lamphamvu popanga mankhwala ndi chimodzi mwazovuta zazikulu za chuma choyera cha mphamvu," adatero Austin Fehr, wophunzira waukadaulo wamankhwala ndi biomolecular engineering komanso m'modzi mwa olemba otsogolera.
“Cholinga chathu ndikumanga nsanja zotheka pachuma zomwe zitha kupanga mafuta opangidwa ndi dzuwa. Apa, tinapanga dongosolo lomwe limatenga kuwala ndikumaliza electrochemical chemistry yogawa madzi pamwamba pake.”
Chipangizochi chimadziwika kuti photoelectrochemical cell chifukwa kuyamwa kwa kuwala, kusandulika kukhala magetsi ndi kugwiritsa ntchito magetsi kuti apange mphamvu ya mankhwala zonse zimachitika mu chipangizo chomwecho. Mpaka pano, kugwiritsa ntchito ukadaulo wa photoelectrochemical kupanga haidrojeni wobiriwira kunalepheretsedwa ndi kuchepa kwachangu komanso kukwera mtengo kwa ma semiconductors.
"Zipangizo zonse zamtundu uwu zimapanga haidrojeni wobiriwira pogwiritsa ntchito kuwala kwa dzuwa ndi madzi okha, koma zathu ndi zachilendo chifukwa zimakhala ndi mbiri yabwino komanso zimagwiritsa ntchito semiconductor yotsika mtengo kwambiri," adatero Fehr.
The Mohite lab ndipo ogwira nawo ntchito adapanga chipangizochi potembenuza awo ma cell a solar opikisana kwambiri mu riyakitala yomwe ingagwiritse ntchito mphamvu yokolola kuti igawanitse madzi kukhala mpweya ndi haidrojeni.
Vuto limene anafunika kuthana nalo linali lakuti ma halide perovskite* ndi osakhazikika kwambiri m'madzi ndipo zokutira zomwe zimagwiritsidwa ntchito potsekera zida zotsekera zimatha kusokoneza ntchito yawo kapena kuziwononga.
"Pazaka ziwiri zapitazi, takhala tikuyenda mobwerezabwereza kuyesa zida ndi njira zosiyanasiyana," adatero Michael Wong, Wopanga mankhwala a Rice komanso wolemba nawo pa kafukufukuyu.
Mayesero aatali atalephera kupereka zotsatira zomwe amafuna, ofufuzawo adapeza njira yopambana.
"Chidziwitso chathu chachikulu chinali chakuti mumafunikira zigawo ziwiri zotchinga, imodzi kuti mutseke madzi ndi imodzi kuti mugwirizane bwino ndi magetsi pakati pa zigawo za perovskite ndi chitetezo," adatero Fehr.
"Zotsatira zathu ndizopambana kwambiri pama cell a photoelectrochemical opanda mphamvu ya solar, komanso zabwino kwambiri kwa omwe amagwiritsa ntchito halide perovskite semiconductors.
"Ndi gawo loyamba kwa gawo lomwe m'mbuyomu linkalamulidwa ndi ma semiconductors okwera mtengo kwambiri, ndipo likhoza kuyimira njira yopezera malonda amtunduwu kwanthawi yoyamba," adatero Fehr.
Ofufuzawo adawonetsa mapangidwe awo otchinga amagwirira ntchito mosiyanasiyana komanso ndi ma semiconductors osiyanasiyana, ndikupangitsa kuti igwire ntchito pamakina ambiri.
"Tikukhulupirira kuti machitidwe oterowo adzakhala ngati nsanja yoyendetsera ma electron osiyanasiyana kuti apange mafuta opangira mafuta pogwiritsa ntchito zakudya zambiri zokhala ndi dzuwa lokha monga mphamvu yowonjezera," adatero Mohite.
"Ndikuwonjezereka kwina kwa kukhazikika ndi kukula, lusoli likhoza kutsegula chuma cha haidrojeni ndikusintha momwe anthu amapangira zinthu kuchokera ku mafuta oyaka mafuta kupita ku mafuta a dzuwa," Fehr anawonjezera.
Perovskite - Mcherewu uli ndi ma conductivity apamwamba kuposa silicon ndipo ndi wochepa kwambiri. Ndiwochulukanso kwambiri padziko lapansi. Pazaka khumi zapitazi, kuyesayesa kwakukulu kwadzetsa chitukuko chodabwitsa, koma kukhazikitsidwa kwake mu ma optoelectronics amtsogolo kumakhalabe kovuta.
Ma cell a Perovskite photovoltaic akadali osakhazikika ndipo amakalamba msanga. Komanso, ali ndi lead, zinthu zomwe zimawononga kwambiri chilengedwe komanso thanzi la anthu. Pazifukwa izi, mapanelo sangathe kugulitsidwa.
Halogenated hybrid perovskites ndi gulu la zida za semiconductor zomwe zakhala zikuyang'ana kwambiri pa kafukufuku wina m'zaka zaposachedwa chifukwa cha zinthu zawo zochititsa chidwi zamtundu wa photoelectric ndikugwiritsa ntchito kwawo pamakina a photovoltaic.
