ʻO ka wai kai kekahi o nā kumu waiwai nui loa ma ka honua, e hāʻawi ana i ka ʻōlelo hoʻohiki ma ke ʻano he kumu hydrogen - makemake ʻia ma ke ʻano he kumu o ka ikehu maʻemaʻe - a me ka wai inu i nā piʻi maloʻo. Akā ʻoiai ua ʻoi aku ka maikaʻi o nā ʻenehana hoʻokaʻawale wai i hiki ke hana i ka hydrogen mai ka wai maʻemaʻe, ua paʻakikī ka wai kai.

Ua hōʻike nā mea noiʻi mai ke Kulanui o Houston i kahi holomua nui me ka oxygen evolution reaction catalyst hou, i hui pū ʻia me ka hydrogen evolution reaction catalyst, i loaʻa i nā density o kēia manawa hiki ke kākoʻo i nā koi ʻoihana ʻoiai e koi ana i ka uila haʻahaʻa haʻahaʻa e hoʻomaka ai i ka electrolysis wai.

Wahi a nā mea noiʻi, ʻo ka mea hana, i haku ʻia me nā nitrides metala non-noble inexpensive, hoʻokele e pale i ka nui o nā keʻakeʻa i kaupalena i nā hoʻāʻo mua e hana maʻalahi i ka hydrogen a i ʻole ka wai inu palekana mai ke kai. Ua wehewehe ʻia ka hana ma Nature Communications.

Ua ʻōlelo ʻo Zhifeng Ren, ka luna o Texas Center for Superconductivity ma UH a me kahi mea kākau e pili ana i ka pepa, ʻo ka pilikia nui ʻo ka nele o kahi catalyst e hiki ke hoʻokaʻawale maikaʻi i ka wai kai e hana i ka hydrogen me ka ʻole o ka hoʻonohonoho ʻana i nā ion sodium, chlorine, calcium. a me nā mea ʻē aʻe o ka wai kai, i hoʻokuʻu ʻia i ka wā e hiki ai ke kau ma luna o ka catalyst a lilo i mea ʻole. ʻOi aku ka pilikia o nā ion chlorine, ma ka hapa no ka mea e koi ana ka chlorine i ka uila kiʻekiʻe iki i ka manuahi ma mua o ka pono e hoʻokuʻu i ka hydrogen.

Ua hoʻāʻo nā mea noiʻi i nā mea hoʻoheheʻe me ka wai kai i huki ʻia mai Galveston Bay mai ke kahakai ʻo Texas. Ua ʻōlelo ʻo Ren, MD Anderson Luna Hoʻonaʻauao o ka physics ma UH, e hana pū me ka wai ʻino, e hāʻawi ana i kahi kumu hydrogen mai ka wai ʻaʻole hiki ke hoʻohana ʻia me ka mālama ʻole ʻana.

"Hoʻohana ka hapa nui o ka poʻe i ka wai maʻemaʻe maʻemaʻe e hana i ka hydrogen ma o ka hoʻokaʻawale ʻana i ka wai," wahi āna. "Akā ua kaupalena ʻia ka loaʻa ʻana o ka wai maʻemaʻe."

No ka hoʻoponopono ʻana i nā pilikia, ua hoʻolālā ka poʻe noiʻi a hoʻonohonoho i kahi ʻano ʻekolu-dimensional core-shell oxygen evolution reaction catalyst me ka hoʻohana ʻana i ka metal-nitride transition, me nā nanoparticles i hana ʻia me kahi pūhui nickle-iron-nitride a me nā nanorods nickle-molybdenum-nitride ma ka porous nickle foam.

ʻO ka mea kākau mua ʻo Luo Yu, kahi mea noiʻi postdoctoral ma UH i pili pū me Central China Normal University, i ʻōlelo ʻia ua hoʻopili ʻia ka mea hoʻoheheʻe oxygen hou me ka hydrogen evolution reaction catalyst o nickle-molybdenum-nitride nanorods.

Ua hoʻohui ʻia nā catalysts i loko o kahi electrolyzer alkaline ʻelua-electrode, hiki ke hoʻohana ʻia e ka wela wela ma o kahi mea thermoelectric a i ʻole e kahi pākaukau AA.

Pono nā volta cell no ka hana ʻana i ka 100 milliamperes i kēlā me kēia kenimika pāhaʻi (kahi ana o ka nui o kēia manawa, a i ʻole mA cm-2) mai 1.564 V a i 1.581 V.

He mea koʻikoʻi ka volta, wahi a Yu, no ka mea, ʻoiai e koi ʻia ka volta o ka liʻiliʻi o 1.23 V e hana i ka hydrogen, ua hana ʻia ka chlorine ma ka volta o 1.73 V, ʻo ia ka mea e hiki ai i ka mea hana ke hana i nā pae koʻikoʻi o ka nui o kēia manawa me kahi uila. ma waena o nā pae ʻelua.

Ma waho aʻe o Ren a me Yu, nā mea noiʻi ma ka pepa ʻo Qing Zhu, Shaowei Song, Brian McElhennyy, Dezhi Wang, Chunzheng Wu, Zhaojun Qin, Jiming Bao a me Shuo Chen, nā UH a pau; a me Ying Yu o ke Kulanui maʻamau o Central Kina.

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