Morphology-Controlled Nickel Oxide and Iron–Nickel Oxide for Electrochemical Oxygen Evolution Reaction
Source abstract
Abstract
Morphology engineering is an attractive method for controlling the activity of metal and metal oxide catalysts. However, there have been only a few studies on nickel oxide regarding the shape control and observation of its catalytic properties. Here, we synthesized various morphologies of nickel oxide nanoparticles, namely octahedral ((111) facet exposed), hexagonal ((110) facet exposed), and donut-shaped (via Kirkendall effect). Additionally, a small amount of iron was added to the nanoparticles by two methods: doping and post-deposition. The hexagonal and donut-shaped nickel oxides exhibited higher oxygen evolution reaction (OER) activity than the octahedral nickel oxide. In addition, the hexagonal and donut-shaped Fe-post-deposited samples showed superior OER activity compared to the other iron–nickel oxide samples.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Electrocatalysts for Energy Conversion · Copper-based nanomaterials and applications · Electrochemical Analysis and Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Institute of Materials Technology, Pusan National University, Busan 46241, Korea
Department of Materials Science and Engineering, Pusan National University, Busan 46241, Korea
Funding
Korea Institute of Materials Science · National Research Foundation of Korea · Korea Evaluation Institute of Industrial Technology · Ministry of Science, ICT and Future Planning
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