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المؤلفNath, Narayan Chandra Deb
المؤلفJeong, Hye Won
المؤلفHan, Dong Suk
المؤلفPark, Hyunwoong
المؤلفLee, Jae Joon
تاريخ الإتاحة2022-12-19T12:08:19Z
تاريخ النشر2020-01-24
اسم المنشورJournal of the Electrochemical Society
المعرّفhttp://dx.doi.org/10.1149/1945-7111/ab6a80
الاقتباسNath, N. C. D., Jeong, H. W., Han, D. S., Park, H., & Lee, J. J. (2020). Facile electrochemical synthesis of highly efficient copper–cobalt oxide nanostructures for oxygen evolution reactions. Journal of The Electrochemical Society, 167(2), 026510.
الرقم المعياري الدولي للكتاب0013-4651
معرّف المصادر الموحدhttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85079549406&origin=inward
معرّف المصادر الموحدhttp://hdl.handle.net/10576/37395
الملخصNanostructured copper-cobalt oxide (CuxCo3-xO4, CCO) electrodes are grown directly on conducting substrates via electrochemical deposition; then, various factors (e.g., oxygen vacancies, electrochemically active surface area, and electrical conductivity) affecting their electrocatalytic activity for oxygen evolution reactions (OERs) are studied. The observed OER performance decreases when increasing the annealing temperature due to the nanostructure deformation and agglomeration and the decreased number of oxygen vacancies, electrochemically active surface area, and electrical conductivity. An optimized nanopetal structure of CuxCo3-xO4 (x = 0.95, annealed at 200 °C) shows a considerably high Faradaic efficiency (∼93%) with a remarkably low overpotential (∼230 mV) at a benchmark current density (J) of 10 mA cm-2; at the same J in an alkaline solution (1 M KOH) for OER, it also exhibits high durability (up to 100 h). This study provides a complete guide for designing efficient and robust spinel-type CCO electrocatalysts through a facile electrochemical route.
راعي المشروع- Qatar National Research Fund (QNRF) - grant #NPRP 10 1210 160019. - National Research Foundations - grant #2019M1A2A2065616, 2019R1A2C2002602. - Ministry of Science, ICT and Future Planning (MSIP)- grant #NRF-2015M1A2A2054996, NRF-2016M1A2A2940912.
اللغةen
الناشرElectrochemical Society
الموضوعNanostructures
Electrocatalysts
Electrochemical
العنوانFacile Electrochemical Synthesis of Highly Efficient Copper-Cobalt Oxide Nanostructures for Oxygen Evolution Reactions
النوعArticle
رقم العدد2
رقم المجلد167
ESSN1945-7111
dc.accessType Abstract Only


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