Iridium nanostructures ma juyike maber akeca ma juketho iwi mesoporous tantalum oxide medo rwom pa ngwec, tic pa catalytic man bedo maber pi kare malac.
Cal: Ju ma timo sayusac i South Korea man US gi goyu iridium catalyst manyen ku medo oxygen evolution reaction activity mi konyo electrolysis pa pii ku proton exchange membrane mi wodhu hydrogen. ponj lembe mukende
Miti pa kero pa ng'om umediri ka medere. Ker pa hydrogen ma jucwalo tiye ku genogen madit in yeny mwa mi yore mi kero maleng man ma rii pi kare malac. I lembe maeni, proton exchange membrane water electrolysers (PEMWEs), ma loko kero pa mac ma ukadhu ni kero pa hydrogen ma jucwalo nikadhu kud i water electrolysis, ukelo miti madit. Ento, tic pare madit i yubu hydrogen udong nok pi rwom ma piny pa oxygen evolution reaction (OER), piny ma pire tek i electrolysis, man rwom ma malu pa metal oxide catalysts ma wel migi tek calu iridium (Ir) man ruthenium oxide i electrodes utiye nok. . Pieno, dongo pa OER catalysts ma tiyo maber man ma tiyo maber piretek pi tic pa PEMWE.

I kare ma ukadhu, dul pa dhanu mi Korea-Amerika ma jutelo wigi ku Professor Changho Park kud i Gwangju Institute of Science and Technology in South Korea gi goyo iridium nanostructured catalyst manyen ma tiyo ku mesoporous tantalum oxide (Ta2O5) nikadhu kud i yore mi dwoko piny pa formic acid maber pi kelo electrolysis maber pa pii mi PEM. . Lembe ma giponjo juwodho iwi yamu in nindo 20, mi dwi mir abic, 2023, man jubiwodho i Volume 575 mi Journal of Power Sources i nindo 15, mi dwi mir abora, 2023. Lembe ma juponjo eca jugoro ku Dr. Chaekyong Baik, jagor i Korea Institute of Science and Technology (KIST).
"Electron-rich Ir nanostructure ubedo maromrom iwi mesoporous Ta2O5 substrate ma juyubu ku soft template method ma juporo ku ethylenediamine surrounding process, ma dwoko piny Ir ma nwang i PEMWE battery acel ni 0.3 mg cm-2," Professor Park ukoro. . Ber ni ngeyo ni kit ma juyubu kudu Ir/Ta2O5 catalyst uketho Ir tiyo maber kende ngo, ento de etiye ku kero mi tero piny man kabedo malac ma tiyo ku mac.
Mi medo, X-ray photoelectron man X-ray absorption spectroscopy nyutho tic ma tek ikind Ir ku Ta, man density functional theory nyutho nia charge transfer kud i Ta ni Ir, ma nyayu mako pa adsorbates calu O ku OH, man gwoko Ir(III) ratio i saa mi OOP oxidation. Eni uketho tic pa Ir/Ta2O5 umedire, ma etiye ku voltage ma piny pa 0.385 V ka juporo ku 0.48 V pi IrO2.
Udul ne de unyutho tic ma malu pa OER pa catalyst, gineno overvoltage pa 288 ± 3.9 mV i 10 mA cm-2 man Ir mass ma malu pa 876.1 ± 125.1 A g-1 i 1.55 V ni wel ma rwate. pi Mr. Black. I andha, Ir/Ta2O5 nyutho tic maber pa OER man bedo moth, ma judwoko wange i saa 120 mi tic pa cell acel acel mi membrane-electrode assembly.
Yore ma juyiko utiye ku bero ario mi dwoko piny Ir man medo tic pa OER. "Medu pa tic pa OER medo kero pa tic pa PEMWE, man eketho tic pare doko ber. Lembe maeni copo loko tic pa PEMWE man nyayu tic pare pio pio calu yore madit mi yubu hydrogen," Professor Park uwacu. .

I ajiki ne, dongo eni ukelo wa kago ku nwangu yore mi tero teko pa hydrogen ma rii pi kare malac man ni nwangu rwom pa carbon neutral.
Pi Gwangju Institute of Science and Technology (GIST) Gwangju Institute of Science and Technology (GIST) utiye univasite mi somo ma nwangire i Gwangju, South Korea. GIST ucaku i 1993 man edoko acel mi sukul ma pire tek uloyu i South Korea. Yunivasiti utiye ku lembakeca mi cwio kabedo mi timo sayusac ma tek ma medo dongo pa ngec man diro man medo tic karacelu ikind tic mi sayusac mi ng'om zoo man mi ng'om. Ni lubu lembe ma ewacu niya "Jatel wi lembe mi ryeko man diro mi anyim", GIST ubedo ikind yunivasiti ma malu uloyu i South Korea.
Pi lembe pa jugor Dr. Changho Park ubedo japonji i Gwangju Institute of Science and Technology (GIST) nicaku i Dwi mir Abora 2016. Mapodi emondo i GIST, ebedo jawikom pa Samsung SDI man enwango digri mi Master kud i Samsung Electronics SAIT. Enwangu digri pare mi bachelor, master, man doctorate kud i dipatmen mi Chemistry, Korea Institute of Science and Technology, i 1990, 1992, man 1995, kubang wadi. Somo pare ma kawoni uketho wigi ikum dongo pa piny ma nyayu kero pi membrane electrode assemblies i fuel cells man electrolysis ma jutiyo kudu ku nanostructured carbon man mixed metal oxide supports. Egoro waraga 126 mi ngec man enwango twero 227 i tic pare mi ngec.
Daktari Chaekyong Baik ubedo jagor i Korea Institute of Science and Technology (KIST). Etiye ikind dongo pa PEMWE OER man MEA catalysts, ku nen pa catalysts man jam tic pi ammonia oxidation reactions. Mapodi emondo i KIST i 2023, Chaekyung Baik unwangu PhD pare i Energy Integration kud i Gwangju Institute of Science and Technology.
Mesoporous iride nanostructure ma jukonyo ku electron-rich Ta2O5 copo medo tic man bedo maber pa oxygen evolution reaction.
Ju ma goro buku eni giwacu niya gi ngeyo ngo lembe mi lim nyo mer migi ma copo bedu ni nyayu aloka loka i tic ma jukoro i lembe eni.
Lembe ma pire tek: AAAS man EurekAlert! gipe ku twero ikum bedo pa lembe ma juwodho i EurekAlert! Tic moko ci pa lembe pa kanisa moko nyoke nikadhu kud i EurekAlert system.

Ka imito ngec mukende, cwal ira email.
E-mail:
info@pulisichem.cn
Tel:
+86-533-3149598