Self-supported amorphous TaNx(Oy)/nickel foam thin film as an advanced electrocatalyst for hydrogen evolution reaction

Thiyagarajan GB, Mukkavilli RS, Graf D, Fischer T, Wilhelm M, Christiansen S, Mathur S, Kumar R (2022)

Publication Type: Journal article

Publication year: 2022

Journal

Chemical Communications Royal Society of Chemistry

Book Volume: 58

Pages Range: 3310-3313

Journal Issue: 20

DOI: 10.1039/d2cc00151a

Abstract

Chemical vapor deposited (CVD) amorphous tantalum-oxy nitride film on porous three-dimensional (3D) nickel foam (TaNx(Oy)/NF) utilizing tantalum precursor, tris(diethylamino)(ethylimino)tantalum(V), ([Ta(NEt)(NEt2)3]) with preformed Ta-N bonds is reported as a potential self-supported electrocatalyst for hydrogen evolution reaction (HER). The morphological analyses revealed the formation of thin film of core-shell structured TaNx(Oy) coating (ca. 236 nm) on NF. In 0.5 M H2SO4, TaNx(Oy)/NF exhibited enhanced HER activity with a low onset potential as compared to the bare NF (−50 mV vs. −166 mV). The TaNx(Oy)/NF samples also displayed higher current density (−11.08 mA cm−2vs. −3.36 mA cm−2 at 400 mV), lower Tafel slope (151 mV dec−1vs. 179 mV dec−1) and lower charge transfer resistance exemplifying the advantage of TaNx(Oy) coating towards enhanced HER performance. The enhanced HER catalytic activity is attributed to the synergistic effect between the amorphous TaNx(Oy) film and the nickel foam.

Involved external institutions

Indian Institute of Technology Madras IN India (IN) Universität zu Köln DE Germany (DE) Fraunhofer-Institut für Keramische Technologien und Systeme (IKTS) DE Germany (DE)

How to cite

APA:

Thiyagarajan, G.B., Mukkavilli, R.S., Graf, D., Fischer, T., Wilhelm, M., Christiansen, S.,... Kumar, R. (2022). Self-supported amorphous TaNx(Oy)/nickel foam thin film as an advanced electrocatalyst for hydrogen evolution reaction. Chemical Communications, 58(20), 3310-3313. https://doi.org/10.1039/d2cc00151a

MLA:

Thiyagarajan, Ganesh Babu, et al. "Self-supported amorphous TaNx(Oy)/nickel foam thin film as an advanced electrocatalyst for hydrogen evolution reaction." Chemical Communications 58.20 (2022): 3310-3313.

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