ʻO ke kūlana hou no ka ʻenehana hydrogen ʻōmaʻomaʻo i hoʻonohonoho ʻia e nā ʻenekinia Rice University.
Hiki i nā ʻenekinia University Rice ke huli ka lā i loko o ka hydrogen me ka maikaʻi hoʻopaʻa moʻolelo mahalo i kahi mea hana e hui pū ai i ka hanauna hou halide perovskite semiconductor* me electrocatalysts i loko o ka mea hoʻokahi, lōʻihi, kumu kūʻai-pono a scalable.
Wahi a he aʻo paʻi ʻia ma Nature Communications, ua loaʻa i ka hāmeʻa kahi 20.8% solar-to-hydrogen conversion efficiency.
He pae koʻikoʻi ka ʻenehana hou no ka ikehu maʻemaʻe a hiki ke lawelawe ma ke ʻano he kahua no ka nui o nā hopena kemika e hoʻohana ana i ka uila i ʻohi ʻia e ka lā e hoʻololi ai. mea hānai i wahie.
ʻO ke keʻena o ka ʻenekinia kemika a me ka biomolecular Aditya Mohite kūkulu i ka photoreactor i hoʻohui ʻia me ka hoʻohana ʻana i kahi pale anticorrosion e hoʻokaʻawale i ka semiconductor mai ka wai me ka ʻole o ka hoʻoneʻe ʻana i nā electrons.
"ʻO ka hoʻohana ʻana i ka lā ma ke ʻano he kumu ikehu no ka hana ʻana i nā kemika ʻo ia kekahi o nā pilikia nui loa i ka hoʻokele waiwai maʻemaʻe," wahi a Austin Fehr, he haumāna kauka kauka a me biomolecular engineering a me kekahi o nā mea kākau alakaʻi.
"ʻO kā mākou pahuhopu ke kūkulu ʻana i nā kahua hoʻokele waiwai e hiki ai ke hoʻoulu i nā wahie i loaʻa i ka lā. Maʻaneʻi, ua hoʻolālā mākou i kahi pūnaewele e hoʻopau i ka māmā a hoʻopiha i ka electrochemical kemika hoʻoheheʻe wai ma kona ili.
Ua ʻike ʻia ka hāmeʻa he cell photoelectrochemical no ka mea ʻo ka absorption o ka mālamalama, kona hoʻololi ʻana i uila a me ka hoʻohana ʻana i ka uila no ka hoʻoulu ʻana i ka hopena kemika i loko o ka mea like. Aia a hiki i kēia manawa, hoʻohana ʻia ka ʻenehana photoelectrochemical e hana i ka hydrogen ʻōmaʻomaʻo i hoʻopilikia ʻia e nā haʻahaʻa haʻahaʻa a me ke kumukūʻai kiʻekiʻe o nā semiconductor.
"Hoʻopuka nā mea hana a pau o kēia ʻano i ka hydrogen ʻōmaʻomaʻo me ka hoʻohana ʻana i ka lā a me ka wai wale nō, akā ʻokoʻa kā mākou no ka mea he mea hoʻopaʻa haʻihaʻi moʻolelo a hoʻohana ʻo ia i kahi semiconductor maʻalahi loa," wahi a Fehr.
ka Kahua hana Mohite a ua hana kona mau hoa hana i ka mea hana ma ka hoohuli ana i ko lakou hoʻokūkū hoʻokūkū hoʻokūkū kiʻekiʻe i loko o kahi reactor hiki ke hoʻohana i ka ikehu i ʻohi ʻia e hoʻokaʻawale i ka wai i oxygen a me ka hydrogen.
ʻO ka paʻakikī a lākou e lanakila ai, ʻo ia ka halide perovskites * ʻaʻole paʻa loa i ka wai a me nā uhi i hoʻohana ʻia no ka hoʻokaʻawale ʻana i nā semiconductor i hoʻopau i kā lākou hana a hōʻino paha iā lākou.
"I nā makahiki ʻelua i hala iho nei, ua hoʻi a hoʻi mākou i ka hoʻāʻo ʻana i nā mea like ʻole a me nā ʻenehana," wahi a Michael Wong, he ʻenekinia kemika Rice a me ka mea kākau pū ma ke aʻo ʻana.
Ma hope o nā hoʻokolohua lōʻihi ʻaʻole i hāʻawi i ka hopena i makemake ʻia, ua loaʻa i nā mea noiʻi kahi hopena lanakila.
"ʻO kā mākou ʻike koʻikoʻi e pono ana ʻoe i ʻelua mau papa i ka pale, hoʻokahi e pale i ka wai a hoʻokahi e hana i ka pilina uila maikaʻi ma waena o nā papa perovskite a me ka pale pale," wahi a Fehr.
"ʻO kā mākou hopena ka hopena kiʻekiʻe loa no nā cell photoelectrochemical me ka ʻole o ka neʻe ʻana o ka lā, a ʻo ka maikaʻi loa no ka poʻe e hoʻohana ana i ka halide perovskite semiconductors.
"He mea mua ia no kahi kahua i hoʻomalu ʻia i ka mōʻaukala e nā semiconductor kūʻai nui ʻole, a hiki ke hōʻike i ke ala i ka hiki ke kūʻai aku no kēia ʻano mea hana no ka manawa mua," wahi a Fehr.
Ua hōʻike nā mea noiʻi i kā lākou hoʻolālā pale i hana no nā ʻano like ʻole a me nā semiconductor ʻē aʻe, e pili ana i nā ʻōnaehana he nui.
"Ke manaʻolana nei mākou e lilo ia mau ʻōnaehana i kahua no ka hoʻokele ʻana i kahi ākea o nā electrons i ka hoʻoulu ʻana i ka wahie me ka hoʻohana ʻana i nā meaʻai nui me ka lā wale nō e like me ke komo ʻana o ka ikehu," wahi a Mohite.
"Me nā hoʻomaikaʻi hou aʻe i ke kūpaʻa a me ka nui, hiki i kēia ʻenehana ke wehe i ka hoʻokele waiwai hydrogen a hoʻololi i ke ʻano o ka hana ʻana o ke kanaka i nā mea mai ka wahie fossil i ka wahie lā," i hoʻohui ai ʻo Fehr.
Perovskite - He kiʻekiʻe ka conductivity o kēia mineral ma mua o ke silika a ʻoi aku ka palupalu. ʻOi aku ka nui ma ka Honua. I loko o nā makahiki he ʻumi i hala iho nei, ua nui nā hana i alakaʻi i nā hoʻomohala kupaianaha, akā ʻo kona hoʻokomo ʻana i nā optoelectronics e hiki mai ana he paʻakikī.
ʻAʻole paʻa nā pūnaewele photovoltaic Perovskite a hele i ka wā kahiko. ʻO ka mea ʻē aʻe, loaʻa iā lākou ke kēpau, kahi mea ʻino loa i ke kaiapuni a me ke olakino kanaka. No kēia mau kumu, ʻaʻole hiki ke kūʻai ʻia nā panela.
ʻO nā perovskite hybrid halogenated he papa o nā mea semiconductor i kumu nui o ka noiʻi i nā makahiki i hala iho nei no kā lākou mau waiwai photoelectric kupaianaha a me kā lākou noi i nā ʻōnaehana photovoltaic.
