Enhanced oxygen evolution activity by NiOx and Ni(OH)2 nanoparticles
Related Experiment Video
Updated: Apr 20, 2026
Synthesis of Platinum-nickel Nanowires and Optimization for Oxygen Reduction Performance
Published on: April 27, 2018
Lucas-Alexandre Stern1, Xile Hu
1Laboratory of Inorganic Synthesis and Catalysis, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne (EPFL), EPFL-ISIC-LSCI, BCH 3305, Lausanne, CH 1015, Switzerland. xile.hu@epfl.ch.
Abstract:
Small nanoparticles of nickel oxide and nickel hydroxide were investigated for the oxygen evolution reaction (OER) in alkaline solutions. These nanoparticles showed excellent catalytic activity, giving a current density of 10 mA cm(-2) at overpotentials (η) of 300 and 330 mV for Ni(OH)(2) and NiO(x), respectively. The catalytic activity was comparable to that of the best mixed metal oxide catalysts under the same conditions. The activity was significantly higher than that of electrochemically formed Ni(OH)(2) and NiO(x) films, demonstrating the benefit of nanostructuring. Pretreatment of the working electrode was important for the activity and stability of the catalyst layer on the electrode.
More Related Videos
08:13Chemical Precipitation Method for the Synthesis of Nb2O5 Modified Bulk Nickel Catalysts with High Specific Surface Area
Published on: February 19, 2018
10:57Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction
Published on: April 10, 2018