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Generation of metal composition gradients by means of bipolar electrodeposition

Tisserant, Gwendoline and Fattah, Zahra and Ayela, Cédric and Roche, Jérôme and Plano, Bernard and Zigah, Dodzi and Goudeau, Bertrand and Kuhn, Alexander and Bouffier, Laurent Generation of metal composition gradients by means of bipolar electrodeposition. (2015) Electrochimica Acta, 179. 276-281. ISSN 0013-4686

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Official URL: https://doi.org/10.1016/j.electacta.2015.03.102

Abstract

Bipolar electrochemistry is an unconventional technique that currently encounters a renewal of interest due to modern applications in the fields of analytical chemistry or materials science. The approach is particularly relevant for the preparation of asymmetric objects or surfaces such as Janus particles for example. Bipolar electrochemistry allows spatially controlled deposition of various layers from electroactive precursors, selectively at one side of a bipolar electrode. We report here the concomitant cathodic deposition of up to three different metals at the same time in a single experiment. The deposits were characterized by optical and electron microscopy imaging as well as profilometry and energy dispersive X-ray spectroscopy. As a result, the deposited layer is composed of several areas exhibiting both a composition and a thickness gradient. Such a variation directly modifies the optical and electronic properties alongside the surface and gives access to the design of composite surfaces exhibiting a visual gradient feature.

Item Type:Article
HAL Id:hal-02049662
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Other partners > Institut Polytechnique de Bordeaux - IPB (FRANCE)
Other partners > University of Duhok (IRAQ)
Other partners > Université de Bordeaux (FRANCE)
Laboratory name:
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Deposited By: cirimat webmestre
Deposited On:26 Feb 2019 14:25

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