Journal
MATERIALS LETTERS
Volume 308, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.matlet.2021.131219
Keywords
Bi-metal oxide; Hydrogen evolution reaction; Urea oxidation reaction; Spinel oxide
Funding
- Gachon University [GCU-202103030001]
- King Saud University, Riyadh, Saudi Arabia [RSP-2021/247]
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The Co3O4@NiO composite catalyst shows promising catalytic performance for UOR and HER, with lower onset potential and Tafel slope, making it a potential catalyst for practical-level applications.
Herein, the synergetic effect developed between two metal oxide nanostructure mixture Co3O4@NiO is described. The result demonstrates that composite has a promising catalyst for UOR (urea oxidation reaction) and HER (hydrogen evolution reaction). XRD, SEM, TEM and FT-IR, and XPS studies reveal the formation of Co3O4@NiO. For the electrochemical study, Co3O4@NiO displayed lower onset potential -0.123 V for HER and 1.18 V vs. RHE for UOR to deliver a standard current density of 10 mA cm(-2). Importantly, with a low Tafel slope of 141 and 340 mV dec(-1) for UOR and HER, respectively. Thus, this present dual incorporation Co3O4@NiO catalyst could be the potential catalyst for practical-level applications.
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