High Durability and Electrocatalytic Activity Toward Hydrogen Evolution Reaction with Ultralow Rhodium Loading on Titania

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2020-10-01

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Akbayrak, Merve
Önal, Ahmet Muhtar

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Herein, we report the synthesis of titania supported Rh(0) nanoparticles (Rh0/TiO2) as electrocatalyst for hydrogen evolution reaction (HER) in acidic medium. Rhodium nanoparticles with an average particle size of 2.54 nm are found to be well-dispersed on TiO2 surface. Rh0/TiO2 with very low loading density (3.79 μg cm−2) was attached on the glassy carbon electrode (GCE) by drop-casting method. Electrocatalytic performance of modified GCE was investigated via linear sweep voltammetry (LSV) in 0.5 M aqueous H2SO4 solution after 2000 cycle treatment (Rh0/TiO2-2000) and it was found that Rh0/TiO2-2000 on GCE exhibits superior electrocatalytic activity (TOF: 11.45 s−1 at η = 100 mV, η0:−28 mV, η10 mA cm−2: −37 mV, j0: 0.686 mA cm−2 and Tafel slope: 32 Mv dec−1). More importantly, it provides outstanding long-term stability (10000 cycles) at room temperature for HER, which makes Rh0/TiO2-2000 a promising electrocatalyst for hydrogen generation

URI

https://hdl.handle.net/11511/52208

Journal

Journal Of The Electrochemical Society

DOI

https://doi.org/10.1149/1945-7111/abb9cf

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Department of Chemistry, Article

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Citation Formats

M. Akbayrak and A. M. Önal, “High Durability and Electrocatalytic Activity Toward Hydrogen Evolution Reaction with Ultralow Rhodium Loading on Titania,” Journal Of The Electrochemical Society, pp. 156501–156507, 2020, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/52208.