Amanzi olwandle yenye yezona zixhobo zininzi emhlabeni, enika isithembiso njengomthombo wehydrogen - enqweneleka njengomthombo wamandla acocekileyo - kunye namanzi okusela kwindawo eyomileyo. Kodwa kwananjengoko ubugcisa bokwahlulahlula amanzi obukwazi ukuvelisa ihydrogen kumanzi acocekileyo busebenza ngakumbi, amanzi olwandle ahlala elucelomngeni.

Abaphandi abavela kwiDyunivesithi yaseHouston baye banika ingxelo yempumelelo ebalulekileyo nge-oxygen evolution reaction catalyst entsha, edityaniswe ne-hydrogen evolution reaction catalyst, iphumelele ingxinano yangoku ekwaziyo ukuxhasa iimfuno zemizi-mveliso ngelixa ifuna amandla ombane aphantsi ukuqala i-electrolysis yamanzi olwandle.

Abaphandi bathi esi sixhobo, esenziwe ngee-nitrides zentsimbi ezingabizi kakhulu, siyakwazi ukunqanda imiqobo emininzi eye yanciphisa iinzame zangaphambili zokuvelisa i-hydrogen okanye amanzi okusela akhuselekileyo kumanzi olwandle. Umsebenzi uchazwe kuNxibelelwano lweNdalo.

UZhifeng Ren, umlawuli weZiko laseTexas leSuperconductivity e-UH kunye nombhali ohambelana nephepha, uthe umqobo omkhulu ibikukunqongophala kwecatalyst enokwahlula ngokufanelekileyo amanzi olwandle ukuvelisa i-hydrogen ngaphandle kokubeka ii-ion zasimahla zesodium, ichlorine, icalcium. kunye nezinye iinxalenye zamanzi olwandle, athi xa ekhululiwe anokuzinza kwi-catalyst kwaye awenze angasebenzi. Iiion zeklorini ziyingxaki ngakumbi, ngokuyinxenye ngenxa yokuba iklorine ifuna amandla ombane aphezulu kancinane ukukhulula kunokuba ifuneka ukukhulula ihydrogen.

Abaphandi bavavanya i-catalysts ngamanzi olwandle athathwe eGalveston Bay kunxweme lwaseTexas. U-Ren, uSihlalo we-MD u-Anderson uSihlalo we-physics e-UH, uthe naye uya kusebenza ngamanzi amdaka, enika omnye umthombo we-hydrogen emanzini angenakusebenziseka ngaphandle konyango olubiza kakhulu.

"Uninzi lwabantu basebenzisa amanzi acocekileyo acocekileyo ukuvelisa i-hydrogen ngokuhlukana kwamanzi," watsho. “Kodwa ukubakho kwamanzi acocekileyo acocekileyo kulinganiselwe.”

Ukujongana nemingeni, abaphandi baqulunqa kwaye badibanisa i-dimensional core-shell ye-oxygen evolution reaction catalyst isebenzisa i-transition metal-nitride, kunye ne-nanoparticles eyenziwe nge-nickle-iron-nitride compound kunye ne-nickle-molybdenum-nitride nanorods kwi-foam ye-nickle ene-porous.

Umbhali wokuqala uLuo Yu, umphandi we-postdoctoral e-UH ekwadityaniswe neYunivesithi yaseCentral China eqhelekileyo, wathi i-oxygen evolution reaction catalyst entsha idityaniswe ne-hydrogen evolution reaction reaction catalyst ye-nickle-molybdenum-nitride nanorods.

I-catalysts idibaniswe kwi-electrode alkaline electrolyzer, enokuthi inikwe amandla okushisa kwenkunkuma ngesixhobo se-thermoelectric okanye ibhetri ye-AA.

Amandla ombane weeseli ezifunekayo ukuvelisa ubuninzi bangoku obuyi-100 milliampere nge-square centimeter (umlinganiselo woxinaniso lwangoku, okanye i-mA cm-2) ukusuka kwi-1.564 V ukuya kwi-1.581 V.

Umbane ubalulekile, utshilo uYu, kuba ngelixa amandla ombane abubuncinci be-1.23 V efuneka ukuvelisa i-hydrogen, iklorini iveliswa kumbane we-1.73 V, oku kuthetha ukuba isixhobo bekufuneka sikwazi ukuvelisa amanqanaba anentsingiselo oxinaniso lwangoku ngombane. phakathi kwamanqanaba amabini.

Ukongeza kuRen noYu, abaphandi kwiphepha baquka iQing Zhu, iShaowei Song, uBrian McElhennyy, uDezhi Wang, uChunzheng Wu, uZhaojun Qin, uJiming Bao noShuo Chen, bonke be-UH; kunye no-Ying Yu weYunivesithi yase-Central China eqhelekileyo.

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