Investigation on copper based oxide, sulfide and selenide derivatives oxygen evolution reaction activity
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ORIGINAL ARTICLE
Investigation on copper based oxide, sulfide and selenide derivatives oxygen evolution reaction activity B. Jansi Rani1 · G. Ravi1 · R. Yuvakkumar1 · Dhayalan Velauthapillai2 · B. Saravanakumar3 · Amal M. Al‑Mohaimeed4 Received: 24 June 2020 / Accepted: 1 August 2020 © King Abdulaziz City for Science and Technology 2020
Abstract Copper based derivatives such as CuO, CuS and C uSe2 nanostructures were synthesized employing hydrothermal growth for clean energy production. Three different unique morphologies of CuO, CuS and CuSe2 was observed respectively as hexagonal nanoplates, sharp edge rock like nanostructures and nanoflowers consists of well defined nanorods. Half cell electrochemical compartment was designed with the fabricated electrodes to explore oxygen evolution reaction (OER) activity. The highest electrochemical performance was interestingly achieved from cyclic voltametry (CV) profile for CuSe2 electrode as 1144 F/g at 10 mV/s which is quite high specific capacitance for metal selenide candidate and also the higher OER activity of C uSe2 electrode of 735 mA/g current density at 10 mV/s with low overpotential of 252 mV has been attained. The higher electron transportation mechanism and excellent stability was also achieved for copper selenide candidate that could be recommended as efficient OER active catalysts for future clean energy production applications. Keywords CuO · CuS · CuSe2 · OER activity
Introduction Nanotechnology plays an inevitable role in this growing modern era (Wei et al. 2008a; Guang-Yi et al. 2008). Study and development of nano sized materials for multiple applications are the super trend of laboratory works done by world class researchers (Fei et al. 2009; Zhiguo et al. 2010; Yong et al. 2002). Storage and conversion from renewable energy sources is the blooming energy area of research. Water splitting is most important techniques to adapt for the production of clean energy without any carbon based byproducts * R. Yuvakkumar [email protected] * Dhayalan Velauthapillai [email protected] 1
Nanomaterials Laboratory, Department of Physics, Alagappa University, Tamil Nadu, Karaikudi 630 003, India
2
Faculty of Engineering and Science, Western Norway University of Applied Sciences, 5063 Bergen, Norway
3
Laboratory for Advanced Research in Polymeric Materials (LARPM), Central Institute of Plastics Engineering and Technology (CIPET), Bhubaneswar 751024, India
4
Department of Chemistry, College of Science, King Saud University, P.O. Box 22452, Riyadh 11495, Saudi Arabia
emission and are of four kinds. Among them electrochemical splitting is a user friendly technique with the advantages of zero carbon emission, suitable for extensive hydrogen and oxygen manufacturing (Guangzhao et al. 2004). Water splitting is the overall reaction of combined oxygen evolution (OER) and hydrogen evolution reaction (HER) (Yan et al. 2011). OER is kinetically more difficult and sluggish reaction compared to HER due to the involvement
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