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Issue 11, 2014
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Accurate tuning of ordered nanotubular platinum electrodes by galvanic plating

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Abstract

Platinum nanotubes are created by galvanic deposition inside porous templates. The effects of the electrolyte's ion concentration and pH, of the applied potential and of the deposition duration on the morphology of the tubes are investigated systematically. The system provides a model electrode platform with accurately tunable geometry for the fundamental investigation of electrochemical transformations. For slow electrochemical reactions, we observe a linear increase of the galvanic current with the length of the nanotubes, and therefore with the specific surface area of the electrode. In contrast to this, inherently fast electrochemical transformations are diffusion-limited and give rise to the same current density independently of the geometry. These results delineate a strategy for optimizing the performance of electrochemical energy conversion devices systematically via nanostructuring the electrode surfaces.

Graphical abstract: Accurate tuning of ordered nanotubular platinum electrodes by galvanic plating

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Publication details

The article was received on 20 Sep 2013, accepted on 23 Oct 2013 and first published on 24 Oct 2013


Article type: Paper
DOI: 10.1039/C3DT52608A
Citation: Dalton Trans., 2014,43, 4345-4350
  • Open access: Creative Commons BY-NC license
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    Accurate tuning of ordered nanotubular platinum electrodes by galvanic plating

    V. Roscher, M. Licklederer, J. Schumacher, G. Reyes Rios, B. Hoffmann, S. Christiansen and J. Bachmann, Dalton Trans., 2014, 43, 4345
    DOI: 10.1039/C3DT52608A

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