Amanzi olwandle angenye yemithombo eningi kakhulu emhlabeni, enikeza isithembiso kokubili njengomthombo we-hydrogen - efiselekayo njengomthombo wamandla ahlanzekile - namanzi okuphuza ezindaweni ezomile.Kodwa njengoba nobuchwepheshe bokuhlukanisa amanzi obukwazi ukukhiqiza i-hydrogen emanzini ahlanzekile sebusebenza kangcono, amanzi olwandle aseyinselele.

Abacwaningi abavela eNyuvesi yase-Houston babike ukuphumelela okuphawulekayo nge-catalyst entsha yokuguquguquka kwe-oksijini, okuhlanganiswe ne-hydrogen evolution reaction catalyst, kuzuzwe ukuminyana kwamanje okukwazi ukusekela izimfuno zezimboni kuyilapho kudinga amandla kagesi aphansi ukuze kuqalwe i-electrolysis yamanzi olwandle.

Abacwaningi bathi le divayisi, eyakhiwe ngama-nitrides ensimbi angabizi kakhulu, iyakwazi ukugwema izithiyo eziningi eziye zanciphisa imizamo yangaphambili yokukhiqiza i-hydrogen noma amanzi okuphuza aphephile emanzini olwandle ngendlela engabizi.Umsebenzi uchazwe ku-Nature Communications.

UZhifeng Ren, umqondisi weTexas Center for Superconductivity at UH kanye nombhali ohambisana naleli phepha, uthe isithiyo esikhulu kube ukuntuleka kwe-catalyst engahlukanisa kahle amanzi olwandle ukuze akhiqize i-hydrogen ngaphandle kokubeka ama-ion amahhala e-sodium, i-chlorine, i-calcium. nezinye izingxenye zamanzi olwandle, okuthi uma esekhululiwe zingahlala ku-catalyst futhi ziwenze angasebenzi.Ama-ion e-chlorine ayinkinga ikakhulukazi, ngokwengxenye ngoba i-chlorine idinga amandla kagesi aphezulu kancane ukuze ikhululeke kunalokho okudingekayo ukuze kukhululwe i-hydrogen.

Abacwaningi bahlole ama-catalysts ngamanzi olwandle athathwe eGalveston Bay ngasogwini lwaseTexas.U-Ren, uSihlalo we-MD Anderson onguSihlalo we-physics e-UH, uthe izophinde isebenze ngamanzi angcolile, inikeze omunye umthombo we-hydrogen emanzini angeke asetshenziswe ngaphandle kokwelashwa okumba eqolo.

“Abantu abaningi basebenzisa amanzi ahlanzekile ukuze bakhiqize i-hydrogen ngokuhlukanisa amanzi,” esho.“Kodwa ukutholakala kwamanzi ahlanzekile ahlanzekile kulinganiselwe.”

Ukuze kubhekwane nezinselele, abacwaningi baklama futhi bahlanganisa i-catalyst ye-oxygen-dimensional core-shell evolution reaction catalyst isebenzisa i-transition metal-nitride, ene-nanoparticles eyenziwe nge-nickle-iron-nitride compound kanye ne-nickle-molybdenum-nitride nanorods ku-foam ye-nickle ene-porous.

Umbhali wokuqala uLuo Yu, umcwaningi we-postdoctoral e-UH ophinde abe ne-Central China Normal University, uthe i-oxygen evolution reaction catalyst entsha ibhangqwe ne-hydrogen evolution reaction catalyst eyake yabikwa ngaphambili ye-nickle-molybdenum-nitride nanorods.

Ama-catalyst ahlanganiswe ku-electrode alkaline electrolyzer enama-electrode amabili, enganikwa amandla ukushisa kukadoti ngedivayisi ye-thermoelectric noma ngebhethri le-AA.

Ama-voltage amaseli adingekayo ukuze kukhiqizwe ukuminyana kwamanje kwama-milliamperes angu-100 ngesentimitha yesikwele (isilinganiso sokuminyana kwamanje, noma i-mA cm-2) asukela ku-1.564 V kuya ku-1.581 V.

Amandla kagesi abalulekile, kusho u-Yu, ngoba nakuba amandla kagesi okungenani angu-1.23 V edingeka ukuze kukhiqizwe i-hydrogen, i-chlorine ikhiqizwa ngamandla kagesi angu-1.73 V, okusho ukuthi idivayisi bekufanele ikwazi ukukhiqiza amazinga anengqondo okuminyana kwamanje nge-voltage. phakathi kwamazinga amabili.

Ngaphandle kukaRen noYu, abacwaningi ephepheni bahlanganisa uQing Zhu, uShaowei Song, uBrian McElhennyy, uDezhi Wang, uChunzheng Wu, uZhaojun Qin, uJiming Bao noShuo Chen, bonke be-UH;kanye no-Ying Yu waseCentral China Normal University.

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