Related Experiment Video
Updated: Oct 3, 2025
Simple Methods for the Preparation of Non-noble Metal Bulk-electrodes for Electrocatalytic Applications
Published on: June 21, 2017
Self-supported amorphous TaN(O)/nickel foam thin film as an advanced electrocatalyst for hydrogen evolution reaction
Ganesh Babu Thiyagarajan1,2, Raghunath Sharma Mukkavilli1, David Graf3
1Laboratory for High Performance Ceramics, Department of Metallurgical and Materials Engineering, Indian Institute of Technology-Madras (IIT Madras), Chennai 600036, India. nvrk@iitm.ac.in.
Abstract:
Chemical vapor deposited (CVD) amorphous tantalum-oxy nitride film on porous three-dimensional (3D) nickel foam (TaN(O)/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 TaN(O) coating (ca. 236 nm) on NF. In 0.5 M H2SO4, TaN(O)/NF exhibited enhanced HER activity with a low onset potential as compared to the bare NF (-50 mV vs. -166 mV). The TaN(O)/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 TaN(O) coating towards enhanced HER performance. The enhanced HER catalytic activity is attributed to the synergistic effect between the amorphous TaN(O) film and the nickel foam.
More Related Videos
06:39Author Spotlight: Design and Evaluation of Au-Electroplated Carbon Fiber Cloth Electrodes for Hydrogen Peroxide Fuel Cells
Published on: October 20, 2023
10:57Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction
Published on: April 10, 2018