Mvura yegungwa ndechimwe chezviwanikwa zvakawanda pasi pano, ichipa vimbiso sesosi yehydrogen - inodiwa sesosi yesimba rakachena - uye yemvura yekunwa munzvimbo dzakaoma. Asi kunyange unyanzvi hwekutsemura mvura hunokwanisa kugadzira hydrogen kubva mumvura yakachena zvave kushanda zvakanyanya, mvura yegungwa yakaramba iri dambudziko.

Vatsvagiri kubva kuYunivhesiti yeHouston vakashuma budiriro yakakosha neiyo itsva okisijeni evolution reaction catalyst iyo, yakasanganiswa nehydrogen evolution reaction catalyst, yakawana density iripo inokwanisa kutsigira zvinodiwa nemaindasitiri uku ichida yakaderera voltage kuti itange mvura yegungwa electrolysis.

Vatsvagiri vanoti mudziyo uyu, wakaumbwa neasingadhure asiri-noble metal nitrides, anokwanisa kudzivirira zvipingamupinyi zvakawanda izvo zvakamboedza kuyedza kugadzira hydrogen kana mvura yekunwa yakachengeteka kubva mumvura yegungwa zvisingadhure. Basa racho rinotsanangurwa muNature Communications.

Zhifeng Ren, director weTexas Center for Superconductivity kuUH uye munyori anofambirana nebepa, akati chipingamupinyi chikuru chave kushaikwa kwechigadziriso chinogona kunyatsopatsanura mvura yegungwa kuti ibudise hydrogen pasina kumisa maion e sodium, chlorine, calcium. uye zvimwe zvikamu zvemvura yegungwa, iyo yakambosunungurwa inogona kugara pane inokonzeresa uye kuita kuti isashande. Chlorine ions inonyanya kunetsa, muchidimbu nekuti chlorine inoda kungokwirisa zvishoma voltage kuti isunungurwe pane inodiwa kusunungura haidrojeni.

Vatsvagiri vakaedza zvinokonzeresa nemvura yegungwa inotorwa kubva kuGalveston Bay kubva kumahombekombe eTexas. Ren, MD Anderson Sachigaro Purofesa wefizikisi kuUH, akati zvakare ichashanda nemvura yetsvina, ichipa imwe sosi yehydrogen kubva mumvura iyo isingashandisike pasina kurapwa kunodhura.

"Vanhu vazhinji vanoshandisa mvura yakachena yakachena kugadzira hydrogen nekutsemuka kwemvura," akadaro. "Asi kuwanikwa kwemvura yakachena yakachena kushoma."

Kugadzirisa matambudziko, vaongorori vakagadzira nekugadzira matatu-dimensional core-shell oxygen evolution reaction catalyst vachishandisa shanduko yesimbi-nitride, ine nanoparticles yakagadzirwa nickle-iron-nitride komboni uye nickle-molybdenum-nitride nanorods pane porous nickle foam.

Wekutanga munyori Luo Yu, a postdoctoral muongorori paUH akabatana zvakare neCentral China Normal University, akati itsva oxygen evolution reaction catalyst yakabatanidzwa neyakambotaurwa hydrogen evolution reaction catalyst ye nickle-molybdenum-nitride nanorods.

Izvo zvinogadzirisa zvakabatanidzwa mune maviri-electrode alkaline electrolyzer, iyo inogona kushandiswa nemarara kupisa kuburikidza ne thermoelectric device kana neAA bhatiri.

Masero voltages anodiwa kugadzira density iripo ye100 milliampere per square centimita (chiyero chezvino density, kana mA cm-2) kubva pa1.564 V kusvika 1.581 V.

Simba remagetsi rakakosha, akadaro Yu, nekuti nepo voltage inosvika 1.23 V ichidikanwa kugadzira haidrojeni, chlorine inogadzirwa nevoltage ye1.73 V, zvichireva kuti mudziyo waifanira kukwanisa kuburitsa mazinga ane revo ehuwandu hwazvino nemagetsi. pakati pematanho maviri.

Mukuwedzera kuna Ren naYu, vatsvakurudzi papepa vanosanganisira Qing Zhu, Shaowei Song, Brian McElhennyy, Dezhi Wang, Chunzheng Wu, Zhaojun Qin, Jiming Bao naShuo Chen, vose veUH; uye Ying Yu weCentral China Normal University.

Tora ichangoburwa nhau dzesainzi neScienceDaily's emahara email tsamba, anogadziridzwa zuva nezuva nevhiki. Kana kuti tarisa paawa yakagadziridzwa nhau muverengi wako weRSS:

Tiudze zvaunofunga nezveScienceDaily - tinotambira zvese zvakanaka uye zvisina kunaka mhinduro. Une matambudziko nekushandisa saiti? Mibvunzo?