Kev tswj hwm zoo ntawm cov qauv thiab cov khoom ntawm Hybrid Perovskites nyob rau hauv siab?

Tus neeg sau xov xwm tau kawm los ntawm University of Science thiab Technology ntawm Tuam Tshoj tias pab pawg tshawb fawb ntawm xibfwb Zeng Jie thiab Associate Professor Zhou Shiming ntawm Hefei National Research Center for Microscale Matter Science thiab Department of Chemical Physics tau tsim ib txoj hauv kev los npaj ib leeg { {0}}Atom catalysts los ntawm electrochemical deposition. , siv txoj kev no, cov kws tshawb fawb tau ua tiav 34 yam ntawm ib qho - atom catalysts, npog ntau yam kev hloov pauv hlau thiab ntau yam substrates. Cov txiaj ntsig cuam tshuam tsis ntev los no tau tshaj tawm hauv Nature Communications.

Ib leeg- atom catalysts tau nyiam ntau yam hauv cov tshuaj tiv thaiv xws li hydrolysis, oxygen txo, carbon dioxide hydrogenation, thiab methane hloov dua siab tshiab vim lawv siv cov atom loj tshaj plaws thiab cov qauv hluav taws xob tshwj xeeb. Txawm li cas los xij, txoj hauv kev tam sim no rau kev sib txuas ib leeg - atom catalysts muaj cov kev xav tau siab ntawm ib qho atoms thiab substrates, thiab nws tsis tuaj yeem npaj cov hlau ib zaug - atom catalysts ntawm ib qho substrate. Adaptive ib leeg - atom synthesis txoj kev yog qhov tseem ceeb heev.

Cov kws tshawb fawb tau ua electrochemical deposition nyob rau hauv lub electrochemical peb -electrode system, thiab tshawb fawb cov nyhuv ntawm deposition tej yam kev mob ntawm tsim ntawm ib tug atoms, thiab pom tias thaum lub hlau loading yog qis dua ib tug tej yam kev txwv, ib atoms yuav tau txais. ; Tom qab ntawd muaj qhov tsim ntawm cov hlau pawg lossis cov khoom, qhov kev hloov pauv zoo ib yam li cov txheej txheem nucleation hauv kev loj hlob siv lead ua hauv cov kua theem. Txhawm rau ua pov thawj thoob ntiaj teb ntawm txoj kev, cov kws tshawb fawb tau ua tiav ib qho -atom catalysts npog 3d, 4d, thiab 5d hlau ntawm substrates xws li cobalt hydroxide, molybdenum sulfide, manganese oxide, thiab nitrogen- doped carbon, thiab npaj Tom qab tus txheej txheem characterization ntawm ib tug - atom catalyst, nws tau pom tias tib ib zaug xwb - atom catalyst tau los ntawm cathode thiab anode deposition muaj sib txawv hluav taws xob cov qauv, uas muab tau. ntawm nws daim ntawv thov nyob rau hauv txawv catalytic tshua.

Cov txiaj ntsig kev sim qhia tau hais tias qee qhov ntawm cov catalysts tau los ntawm cathodic deposition qhia tau zoo heev hauv cov tshuaj electrocatalytic hydrogen evolution. Nyob rau tib lub sijhawm, qee cov catalysts tau txais los ntawm anodic deposition kuj tau pom qhov ua tau zoo hauv electrocatalytic oxygen evolution cov tshuaj tiv thaiv. Kev ntsuam xyuas electrochemical qhia tau hais tias lub kaw lus tuaj yeem ua tiav tag nrho hydrolysis tam sim no ntom ntawm 10 mA / cm2 nrog tsuas yog lub peev xwm ntawm 1.39 V, rhuav cov ntaub ntawv rau qhov qis tshaj plaws hauv alkaline electrolytes.

Txoj hauv kev thoob ntiaj teb no tsis yog tsuas yog txhaj tshuaj tshiab tseem ceeb rau hauv thaj chaw ntawm ib leeg -atom catalysis, tab sis kuj muab cov tswv yim tshiab rau kev kawm txog kev sib raug zoo ntawm cov qauv catalyst thiab kev ua haujlwm yav tom ntej.