High Electrocatalytic Response of a Mechanically Enhanced NbC Nanocomposite Electrode Towards Hydrogen Evolution Reaction

Emerson Coy, Luis Yate, Drochss P Valencia, Willian Aperador, Katarzyna Siuzdak, Pau Torruella, Eduardo Azanza, Sonia Estrade, Igor Iatsunskyi, Francesca Peiró, Xixiang Zhang, Javier Tejada, Ronald F. Ziolo

Research output: Contribution to journalArticlepeer-review

26 Scopus citations

Abstract

Resistant and efficient electrocatalysts for hydrogen evolution reaction (HER) are desired to replace scarce and commercially expensive platinum electrodes. Thin film electrodes of metal-carbides are a promising alternative due to their reduced price and similar catalytic properties. However, most of the studied structures to date neglect long lasting chemical and structural stability, focusing only on electrochemical efficiency. Herein we report on a new approach to easily deposit and control the micro/nanostructure of thin film electrodes based on niobium carbide (NbC) and their electrocatalytic response. We will show that, by improving the mechanical properties of the NbC electrodes, microstructure and mechanical resilience can be obtained whilst maintaining high electro catalytic response. We also address the influence of other parameters such as conductivity and chemical composition on the overall performance of the thin film electrodes. Finally, we show that nanocomposite NbC electrodes are promising candidates towards HER , and furthermore, that the methodology presented here is suitable to produce other transition metal carbides (TM-C) with improved catalytic and mechanical properties.
Original languageEnglish (US)
Pages (from-to)30872-30879
Number of pages8
JournalACS Applied Materials & Interfaces
Volume9
Issue number36
DOIs
StatePublished - Sep 2017

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