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Dealloying Behavior of NiCo and NiCoCu Thin Films
Joint Authors
Peecher, Benjamin E.
Hampton, Jennifer R.
Source
International Journal of Electrochemistry
Issue
Vol. 2016, Issue 2016 (31 Dec. 2016), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2016-10-13
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Abstract EN
Porous metals and alloys, such as those fabricated via electrochemical dealloying, are of interest for a variety of energy applications, ranging from their potential for enhanced catalytic behavior to their use as high surface area supports for pseudocapacitor materials.
Here, the electrochemical dealloying process was explored for electrodeposited binary NiCo and ternary NiCoCu thin films.
For each of the four different metal ratios, films were dealloyed using linear sweep voltammetry to various potentials in order to gain insight into the evolution of the film over the course of the linear sweep.
Electrochemical capacitance, scanning electron microscopy, and energy dispersive X-ray spectroscopy were used to examine the structure and composition of each sample before and after linear sweep voltammetry was performed.
For NiCo films, dealloying resulted in almost no change in composition but did result in an increased capacitance, with greater increases occurring at higher linear sweep potentials, indicating the removal of material from the films.
Dealloying also resulted in the appearance of large pores on the surface of the high nickel percentage NiCo films, while low nickel percentage NiCo films had little observable change in morphology.
For NiCoCu films, Cu was almost completely removed at linear sweep potentials greater than 0.5 V versus Ag/AgCl.
The linear sweep removed large Cu-rich dendrites from the films, while also causing increases in measured capacitance.
American Psychological Association (APA)
Peecher, Benjamin E.& Hampton, Jennifer R.. 2016. Dealloying Behavior of NiCo and NiCoCu Thin Films. International Journal of Electrochemistry،Vol. 2016, no. 2016, pp.1-10.
https://search.emarefa.net/detail/BIM-1106079
Modern Language Association (MLA)
Peecher, Benjamin E.& Hampton, Jennifer R.. Dealloying Behavior of NiCo and NiCoCu Thin Films. International Journal of Electrochemistry No. 2016 (2016), pp.1-10.
https://search.emarefa.net/detail/BIM-1106079
American Medical Association (AMA)
Peecher, Benjamin E.& Hampton, Jennifer R.. Dealloying Behavior of NiCo and NiCoCu Thin Films. International Journal of Electrochemistry. 2016. Vol. 2016, no. 2016, pp.1-10.
https://search.emarefa.net/detail/BIM-1106079
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1106079