Mesoporous tantalum oxide cung ah chiahmi a hleiin sermi iridium nanostructures nih cun hruai khawhnak, catalytic cawlcanghnak le caan saupi fek tein um khawhnak a ṭhanchoter.
Hmanthlak: South Korea le US ram i hlathlaitu hna nih hydrogen chuah khawhnak ding caah proton thlennak membrane he ti kha man fawi tein electrolysis tuah khawhnak ding caah oxygen evolution reaction cawlcanghnak a karhtermi iridium catalyst thar an ser. tam deuh in cawng
Vawleicung thazaang herhmi cu a karh chin lengmang. A thiangmi le a hmunmi thazaang thlennak kan kawlnak ah phorh khawhmi hydrogen thazaang nih ruahchannak nganpi a kan ngeihter. Hi kong he pehtlai in, proton i thlennak membrane ti electrolysers (PEMWEs), ti electrolysis hmangin a tam tukmi electric thazaang kha kalpi khawhmi hydrogen thazaang ah a thlenmi nih mipi lungthin a lak ngaingai. Sihmanhsehlaw, hydrogen chuahnak ah a nganmi hmannak cu electrolysis ah a biapi mi oxygen evolution reaction (OER) a tlawm tuk caah le electrode chungah iridium (Ir) le ruthenium oxide tibantuk a man a fakmi thir oxide catalysts tampi luhternak ruangah a tlawm rih. . Cucaah, PEMWE hmannak kau deuh caah a man a fawimi le riantuan ning a sangmi OER catalysts sernak cu a herh.

Nai ah, South Korea ram i Gwangju Institute of Science and Technology in Professor Changho Park nih a hruaimi Korean-American hlathlainak phu nih PEM ti ttha tein electrolysis tuah khawhnak ding caah a ttha deuhmi formic acid zorternak lam hmangin mesoporous tantalum oxide (Ta2O5) cung ah hram bunhmi iridium nanostructured catalyst thar an ser. . An hlathlainak cu May 20, 2023 ah online ah an chuah i, August 15, 2023 ah Journal of Power Sources Volume 575 ah an chuah lai. Hlathlainak cu Korea Institute of Science and Technology (KIST) ah hlathlaitu Dr. Chaekyong Baik nih a tial tti.
“Electron-rich Ir nanostructure cu a nemmi template phunglam he ethylenediamine pawngkam kalning he fonh in timhtuahnak a fekmi mesoporous Ta2O5 substrate cungah aa tluk tein aa ṭhek, cu nih cun PEMWE battery pakhat chung i Ir a tlawmtermi kha 0.3 mg cm-2 tiang a zorter,” tiah Professor Park nih a fianter. . Ir/Ta2O5 catalyst i a thar in sermi suaisam nih Ir hmannak a tthanchoter lawng si loin, a sang deuhmi hruainak le electrochemical in a cawlcangmi vawlei kau deuh zong a ngei ti kha hngalh a biapi.
Cun, X-ray photoelectron le X-ray laknak spectroscopy nih Ir le Ta karlak ah a fekmi thir-bawmhnak pehtlaihnak a langhter, cu lioah density functional theory tuaktannak nih Ta in Ir ah charge thlennak a langhter, cucu O le OH tibantuk adsorbates a fekmi pehtlaihnak a chuahter, cun OOP oxidation tuah lio ah Ir(III) ratio kha a kilven. Cu nih cun Ir/Ta2O5 cawlcanghnak a karhter, cu nih cun IrO2 caah 0.48 V he tahchunh tikah 0.385 V a niam deuhmi overvoltage a ngei.
Team nih cun catalyst OER cawlcanghnak sang zong hneksaknak in an langhter, 10 mA cm-2 ah 288 ± 3.9 mV overvoltage le 1.55 V ah aa tlakmi man tiang 876.1 ± 125.1 A g-1 Ir mass cawlcanghnak sang an hmuh. Mr. Black caah. A ngaingai ti ahcun, Ir/Ta2O5 nih a ttha tukmi OER cawlcanghnak le fekmi a langhter, cucu membrane-electrode pumhnak i cell pakhat lawng riantuannak suimilam 120 leng nih a fehter chin.
A chuahpimi lam nih hin Ir tlawmternak le OER tthatnak a karhter timi tthatnak pahnih a ngei. "OER tthatnak a karhmi nih PEMWE kalning man tthatnak kha a bawmh, cucaah a dihlak in a tthanchoter. Hi hlawhtlinnak nih PEMWE chawlehnak ah thlennak a chuahpi khawh i a tlangpi in hydrogen chuahnak lam pakhat in hmannak a rangter khawh," tiah ruahchannak a ngeimi Professor Park nih ruahnak a cheuh. .

A dihlak in, hi tthanchonak nih hin a hmunmi hydrogen thazaang phurhnak lamhruainak hmuh khawhnak le cucaah carbon neutral dirhmun hmuh khawhnak he a kan naihter.
Gwangju Institute of Science and Technology (GIST) kong Gwangju Institute of Science and Technology (GIST) cu Gwangju, South Korea ah a ummi hlathlainak sianginn pakhat a si. GIST cu 1993 ah dirhmi a si i South Korea ram ah minthang bik sianginn pakhat ah aa chuah. University nih hin science le technology thanchonak a thanchotertu le ramkip le ramchung hlathlainak projects karlak ah riantuan ttinak a thanchotertu a fekmi hlathlainak pawngkam ser ding in bia a khiah. “Hmailei Science le Technology Sersiamtu Uangthlar” timi biafang zulh in, GIST cu South Korea ram chung i a sangbik university hna lakah a sang bik dirhmun ah chiah a si peng.
Catialtu hna kong Dr. Changho Park cu August 2016 thawk in Gwangju Institute of Science and Technology (GIST) ah saya a si. GIST ah a luh hlanah, Samsung SDI ah Vice President a rak ttuan i Samsung Electronics SAIT in Master's degree a rak hmuh. Korea Institute of Science and Technology, Chemistry Zung in 1990, 1992 le 1995 ah bachelor, master le doctorate degree a hmuh. A tu lio a hlathlainak nih hin nanostructured carbon le mixed metal oxide supports hmangin fuel cells le electrolysis ah membrane electrode fonhnak caah catalytic thilri sernak ah a biapi in a chiah. A thiamnak lei ah scientific paper 126 a chuah cang i, patent 227 a hmuh cang.
Dr. Chaekyong Baik cu Korea Institute of Science and Technology (KIST) ah hlathlaitu a si. Amah cu PEMWE OER le MEA catalysts sernak ah aa tel, a tu ah catalysts le ammonia oxidation reactions caah thilri pawl ah a biapi in a chiah. 2023 ah KIST a luh hlanah, Chaekyung Baik nih Gwangju Institute of Science and Technology in Energy Integration ah PhD a hmuh.
Electron-rich Ta2O5 nih a dirpi mi mesoporous iride nanostructure nih oxygen thlennak thlennak cawlcanghnak le fek tein a tthanchoter khawh.
Catialtu hna nih hi capar ah langhtermi riantuannak ah huham a ngeimi aa zuammi phaisa lei duhnak asiloah pumpak pehtlaihnak an ngei lo tiah an thanh.
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