Efficient Ceria-Supported Rhodium Nanoparticles as an Electrocatalyst for Hydrogen Evolution

Date

2019-12-13

Author

Akbayrak, Merve
Önal, Ahmet Muhtar

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Rh-0/CeO2 catalystwas prepared by the reduction of Rh+3 ions on CeO2 surface and characterized by transmission electron microscopy, inductively coupled plasma optical emission spectrometry, X-ray photoelectron spectroscopy and powder X-ray diffractometry techniques. To investigate its electrocatalytic activity for H-2 evolution reaction, a glassy carbon electrode (GCE) was modified with Rh-0/CeO2. The modified electrode was found to exhibit a high electrocatalytic activity (turnover frequency (TOF): 1.56 s(-1) at j = 100 mA.cm(-2)) with a small Tafel slope of 34 mV.dec(-1). Moreover, a high exchange current density of 0.527 mA.cm(-2) and low overpotential of 42 mV at j = 10 mA.cm(-2) were also obtained using Rh-0/CeO2-GCE. There is no noticeable change in the Tafel slope and eta(10) values even after 10000 cyclic scans in acidic environment at room temperature, which makes Rh-0/CeO2 on GCE highly durable and long lived electrocatalyst for water splitting. (C) 2019 The Electrochemical Society.

Subject Keywords

Renewable Energy, Sustainability and the Environment, Electrochemistry, Materials Chemistry, Electronic, Optical and Magnetic Materials, Surfaces, Coatings and Films, Condensed Matter Physics

URI

https://hdl.handle.net/11511/34713

Journal

JOURNAL OF THE ELECTROCHEMICAL SOCIETY

DOI

https://doi.org/10.1149/2.0701916jes

Collections

Department of Chemistry, Article

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Citation Formats

M. Akbayrak and A. M. Önal, “Efficient Ceria-Supported Rhodium Nanoparticles as an Electrocatalyst for Hydrogen Evolution,” JOURNAL OF THE ELECTROCHEMICAL SOCIETY, pp. 0–0, 2019, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/34713.