Document Type

Article

Publication Date

12-2013

Publication Source

Nanoscale Research Letters

Volume Number

8

First Page

528

Publisher

SpringerOpen

ISSN

1556-276X

Abstract

Porous metals are of interest for their high surface area and potential for enhanced catalytic behavior. Electrodeposited NiCu thin films with a range of compositions were electrochemically dealloyed to selectively remove the Cu component. The film structure, composition, and reactivity of these samples were characterized both before and after the dealloying step using scanning electron microscopy, energy-dispersive spectroscopy, and electrochemical measurements. The catalytic behavior of the dealloyed porous Ni samples towards the hydrogen evolution reaction was measured and compared to that of the as-deposited samples. The dealloyed samples were generally more reactive than their as-deposited counterparts at low overpotentials, making the dealloying procedure a promising area of exploration for improved hydrogen evolution catalysts.

Keywords

Dealloying, Alloy, NiCu, Ni, Cu, Hydrogen evolution reaction

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