Enhanced oxygen evolution and reduction reactions of porous ternary NiCoFe foam electrodes prepared by dynamic hydrogen template deposition

Author(s)

Lidija D. Rafailovic, Christoph Gammer, Christian Rentenberger, Tomislav Trisovic, Christoph Kleber, Hans-Peter Karnthaler

Abstract

Electrodeposition at high current densities provides excellent means for

the production of deposits with a high surface area. Porous deposits

attract great interest due to their wide range of possible applications

in electrocatalysis. In addition, an advanced porous electrode should

have both, micro and nanoscaled features. We report the synthesis of a

multiscale open porous foam of NiCoFe and its excellent electrocatalytic

performance. At a current density of 1 A cm⁻² a 3D dendritic

structure with open pores is obtained with pore walls having a

morphology that consists of ‘cauliflower-like’ particles containing open

multiscaled dendritic structures. Cyclic voltammograms of a smooth

NiCoFe electrode are compared with those of the achieved nanodendritic

NiCoFe foam electrode. The catalytic activity of the NiCoFe foam is

strongly enhanced for both, the cathodic reduction of oxygen and the

anodic evolution of oxygen and shows a good reversibility. Therefore the

presented new material is promising as bifunctional catalyst in

electrochemical energy conversion and storage devices.

Organisation(s)

Physics of Nanostructured Materials

External organisation(s)

Serbian Academy of Sciences and Arts, Kompetenzzentrum für elektrochemische Oberflächentechnologie GmbH

Journal

Nano Energy

Volume

Pages

523-529

No. of pages

ISSN

2211-2855

DOI

https://doi.org/10.1016/j.nanoen.2012.12.004

Publication date

07-2013

Peer reviewed

Yes

Austrian Fields of Science 2012

1030 Physics, Astronomy, 104005 Electrochemistry, 103018 Materials physics

Keywords

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