Cov dej hiav txwv yog ib qho ntawm cov peev txheej tshaj plaws hauv ntiaj teb, muab kev cog lus ob qho tib si los ntawm hydrogen - xav tau los ua lub zog huv - thiab cov dej haus hauv cov huab cua qhuav. Tab sis txawm tias dej-splitting technologies uas muaj peev xwm ua tau hydrogen los ntawm cov dej tshiab tau ua tau zoo dua, dej hiav txwv tseem yog ib qho nyuaj.

Cov kws tshawb fawb los ntawm University of Houston tau tshaj tawm qhov kev ua tiav tseem ceeb nrog cov pa oxygen evolution tshiab cov tshuaj tiv thaiv catalyst uas, ua ke nrog hydrogen evolution cov tshuaj tiv thaiv catalyst, ua tiav qhov ntom ntom tam sim no muaj peev xwm los txhawb kev lag luam xav tau thaum xav tau cov hluav taws xob qis los pib seawater electrolysis.

Cov kws tshawb fawb hais tias cov cuab yeej, tsim los ntawm pheej yig tsis yog-noble hlau nitrides, tswj kom tsis txhob muaj ntau yam teeb meem uas tau txwv tsis pub dhau los ua pheej yig hydrogen los yog dej haus tsis zoo los ntawm dej hiav txwv. Cov haujlwm tau piav qhia hauv Nature Communications.

Zhifeng Ren, tus thawj coj ntawm Texas Center for Superconductivity ntawm UH thiab tus kws sau ntawv sib raug rau daim ntawv, tau hais tias qhov teeb meem loj yog qhov tsis muaj cov catalyst uas tuaj yeem faib cov dej hiav txwv zoo los tsim cov hydrogen yam tsis tau teeb tsa cov ions dawb ntawm sodium, chlorine, calcium. thiab lwm yam ntawm cov dej hiav txwv, uas ib zaug tso tawm tuaj yeem nyob ntawm cov catalyst thiab ua rau nws tsis ua haujlwm. Chlorine ions yog qhov teeb meem tshwj xeeb, ib feem vim tias cov tshuaj chlorine yuav tsum muaj qhov hluav taws xob me ntsis kom tsis pub dawb tshaj qhov xav tau kom dawb hydrogen.

Cov kws tshawb fawb tau sim cov catalysts nrog dej hiav txwv los ntawm Galveston Bay tawm ntawm ntug dej hiav txwv Texas. Ren, MD Anderson Thawj Tswj Hwm Xib Fwb ntawm physics ntawm UH, tau hais tias nws tseem yuav ua haujlwm nrog cov dej khib nyiab, muab lwm qhov ntawm hydrogen los ntawm cov dej uas siv tsis tau yam tsis muaj nqi kho mob.

"Feem ntau cov neeg siv cov dej ntshiab huv los tsim cov hydrogen los ntawm cov dej sib cais," nws hais. "Tab sis qhov muaj cov dej ntshiab huv yog txwv."

Txhawm rau daws cov teeb meem, cov kws tshawb fawb tau tsim thiab tsim cov txheej txheem peb-dimensional-plhaub-plhaub oxygen evolution cov tshuaj tiv thaiv catalyst siv kev hloov pauv hlau-nitride, nrog nanoparticles ua los ntawm nickle-iron-nitride compound thiab nickle-molybdenum-nitride nanorods ntawm porous nickle ua npuas ncauj.

Thawj tus sau Luo Yu, tus kws tshawb fawb tom qab kawm tiav ntawm UH uas tseem koom nrog Central China Normal University, tau hais tias cov pa oxygen evolution tshiab cov tshuaj tiv thaiv catalyst tau ua ke nrog cov tshuaj tiv thaiv hydrogen evolution yav dhau los catalyst ntawm nickle-molybdenum-nitride nanorods.

Cov catalysts tau muab tso rau hauv ob-electrode alkaline electrolyzer, uas tuaj yeem siv hluav taws xob pov tseg los ntawm lub tshuab hluav taws xob los yog los ntawm AA roj teeb.

Cell voltages yuav tsum tau tsim ib tug tam sim no ceev ntawm 100 milliamperes ib square centimeter (ib qho kev ntsuas ntawm tam sim no ceev, los yog mA cm-2) ranged ntawm 1.564 V rau 1.581 V.

Qhov voltage yog qhov tseem ceeb, Yu hais tias, vim hais tias thaum lub voltage tsawg kawg yog 1.23 V yuav tsum tau tsim hydrogen, chlorine yog tsim nyob rau hauv ib tug voltage ntawm 1.73 V, txhais tau hais tias lub ntaus ntawv yuav tsum muaj peev xwm tsim cov ntsiab lus ntawm tam sim no ceev nrog ib tug voltage. nruab nrab ntawm ob theem.

Ntxiv rau Ren thiab Yu, cov kws tshawb fawb ntawm daim ntawv suav nrog Qing Zhu, Shaowei Song, Brian McElhennyy, Dezhi Wang, Chunzheng Wu, Zhaojun Qin, Jiming Bao thiab Shuo Chen, tag nrho ntawm UH; thiab Ying Yu ntawm Central China Normal University.

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Qhia peb seb koj xav li cas ntawm ScienceDaily — peb txais tos cov lus pom zoo thiab tsis zoo. Puas muaj teeb meem siv lub xaib? Cov lus nug?