Co-Ni Nanowires Arrays with Tunable Properties Obtained by Template Synthesis

Ruxandra Vidu1,2, Andra Mihaela Predescu1,*, Ecaterina Matei1, Andrei Berbecaru1, Cristian Pantilimon1, Claudia Dragan1, Mirela Sohaciu1, Cristian Predescu1

1University POLITEHNICA of Bucharest, Splaiul Independentei nr. 313, Bucharest, Sector 6, CP 060042, Romania

2University of California Davis, Department of Electrical Engineering and Computer Sciences, One Shields Avenue, Davis, CA 95616, USA

Adv. Mater. Lett., 2020, 11 (6), 20061524

DOI: 10.5185/amlett.2020.061524

Publication Date (Web): Mar 14, 2020

E-mail: andrapredescu@yahoo.com

Abstract


Co-Ni nanowires arrays were obtained by electrochemical template synthesis in a polycarbonate track etched (PCTE) membrane. To diminish the effects of anomalous deposition observed in the Co-Ni system, the electrochemical deposition was performed from a solution containing nickel and cobalt in an atomic ratio of 3:1. Electrochemical deposition was performed at constant potentials E = -0.8, -0.9, -1.0, -1.1, -1.2 V vs Ag/AgCl for 15 min. The structures were characterized electrochemically via cyclic voltammetry, chronoamperometry, and charge stripping. Co-Ni nanowires were characterized by scanning electron microscopy (SEM/EDAX) to assess the morphology and the composition of the Co-Ni alloy nanowires at different deposition potentials. Electrochemical and structural analysis provided details of their deposition kinetics, structure, and morphology, which would be used to build nanowires array with controlled structure and composition.

Keywords

Ni-Co alloy, nanowires, anomalous deposition, template synthesis, electrochemical deposition.

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