One-Step Electrodeposition of Nanostructured NiCoO x Films for Highly Efficient Water Oxidation Reaction
Nanostructured nickel-cobalt binary oxides (hydroxides) with efficient water oxidation activity are favorable for water electrolysis. Herein, we successfully developed a simple and fast anodic electrodeposition route to fabricate amorphous NiCoO
x
films on indium tin
oxide (ITO) substrate. The crystalline structure, surface morphology, and surface composition of deposited films were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), and X-ray photoelectron spectroscopy (XPS), respectively. The optimized NiCoO
x
provided a synergistic effect for efficient water oxidation, with an overpotential of 250 mV and a low Tafel slope of 48 mV ยท dec–1. The NiCoO
x
films also exhibited an enhanced long-term durability.
Keywords: ELECTRODEPOSITION; NANOSTRUCTURE; NICKEL COBALT OXIDES; WATER OXIDATION REACTION
Document Type: Research Article
Publication date: 01 October 2018
- Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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