Madzi a m’nyanja ndi amodzi mwa zinthu zopezeka padziko lapansi, ndipo amalonjeza kuti adzatulutsa haidrojeni, yomwe ndi yofunika ngati gwero lamphamvu lamphamvu, komanso madzi akumwa m’malo ouma. Koma ngakhale kuti luso logawanitsa madzi lotha kupanga haidrojeni kuchokera m’madzi opanda mchere ayamba kugwira ntchito bwino, madzi a m’nyanja adakali ovuta.

Ofufuza ochokera ku yunivesite ya Houston anena kuti apambana kwambiri ndi chothandizira chatsopano cha kusintha kwa okosijeni chomwe, kuphatikiza ndi chothandizira cha hydrogen evolution, chakwaniritsa kachulukidwe kameneka komwe kamatha kuthandizira zofuna zamafakitale pomwe pakufunika voteji yotsika kuti ayambitse electrolysis yamadzi am'nyanja.

Ofufuza akuti chipangizochi, chopangidwa ndi zitsulo zotsika mtengo za nitrides, chimatha kupewa zopinga zambiri zomwe zachepetsa kuyesa kupanga hydrogen kapena madzi abwino akumwa kuchokera m'madzi a m'nyanja motsika mtengo. Ntchitoyi ikufotokozedwa mu Nature Communications.

Zhifeng Ren, mkulu wa Texas Center for Superconductivity ku UH komanso wolemba wofanana ndi pepalalo, adati chopinga chachikulu chakhala kusowa kwa chothandizira chomwe chingagawanitse bwino madzi a m'nyanja kuti apange haidrojeni popanda kutulutsa ma ion a sodium, chlorine, calcium. ndi zigawo zina za madzi a m’nyanja, amene akamasulidwa, amatha kukhazikika pa chothandiziracho ndikupangitsa kuti asagwire ntchito. Ma ayoni a klorini ndi ovuta kwambiri, mwa zina chifukwa klorini imafuna magetsi okwera pang'ono kuti atuluke kuposa momwe amafunikira kuti amasule haidrojeni.

Ofufuzawa adayesa zopangira ndi madzi a m'nyanja ochokera ku Galveston Bay kufupi ndi gombe la Texas. Ren, MD Anderson Wapampando Pulofesa wa physics ku UH, adati idzagwiranso ntchito ndi madzi oipa, kupereka gwero lina la haidrojeni kuchokera m'madzi omwe sangagwiritsidwe ntchito popanda mankhwala okwera mtengo.

"Anthu ambiri amagwiritsa ntchito madzi oyera oyera kuti apange haidrojeni mwa kugawa madzi," adatero. "Koma kupezeka kwa madzi abwino ndi ochepa."

Pofuna kuthana ndi mavutowa, ochita kafukufukuwo adapanga ndi kupanga chothandizira chothandizira kusintha kwa oxygen-dimensional-core-shell-molybdenum-nitride pogwiritsa ntchito transition metal-nitride, ndi nanoparticles opangidwa ndi nickle-iron-nitride compound ndi nickle-molybdenum-nitride nanorods pa porous nickle thovu.

Wolemba woyamba, Luo Yu, wofufuza za postdoctoral ku UH yemwenso amagwirizana ndi Central China Normal University, adati chothandizira chatsopano cha oxygen chosinthika chidaphatikizidwa ndi zomwe zidanenedwa kale kuti hydrogen evolution reaction catalyst ya nickle-molybdenum-nitride nanorods.

Zothandizirazo zidaphatikizidwa mu electrode electrode alkaline electrolyzer, yomwe imatha kuyendetsedwa ndi kutentha kwa zinyalala kudzera pa chipangizo cha thermoelectric kapena ndi batire ya AA.

Ma voliyumu a ma cell ofunikira kuti apangitse kachulukidwe ka 100 milliampere pa square centimita imodzi (muyeso wa kachulukidwe wapano, kapena mA cm-2) kuyambira 1.564 V mpaka 1.581 V.

Mpweyawu ndi wofunika kwambiri, adatero Yu, chifukwa ngakhale mphamvu yamagetsi yochepera 1.23 V ikufunika kuti ipange haidrojeni, chlorine imapangidwa pamagetsi a 1.73 V, kutanthauza kuti chipangizocho chimayenera kutulutsa kachulukidwe kake kamakono ndi magetsi. pakati pa magulu awiriwa.

Kuwonjezera pa Ren ndi Yu, ofufuza pa pepalali akuphatikizapo Qing Zhu, Shaowei Song, Brian McElhennyy, Dezhi Wang, Chunzheng Wu, Zhaojun Qin, Jiming Bao ndi Shuo Chen, onse a UH; ndi Ying Yu waku Central China Normal University.

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