Journal
ELECTROCHIMICA ACTA
Volume 78, Issue -, Pages 188-194Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2012.05.122
Keywords
Electro-deposition; Electro-catalysis; RuO2; DSA; Chlor-alkali electrolysis
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Funding
- BMBF [FKZ: 033R018G]
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We report the preparation of Dimensionally Stable Anode coatings with a special surface morphology, which is tailored for the chlorine gas evolution. A simple electro-deposition route is applied to create coatings with large crack sizes and three-dimensionally arranged catalyst spheres on top of the coating surface. This morphology shows an increase of the specific outer electro-catalyst surface area, which is the main working part during intensive chlorine gas evolution. By this means, a decrease of the chlorine overpotential and simultaneously a reduction of the noble metal content can be achieved, which is favorable in terms of energy and resource efficiency of the chlor-alkali industry. The influence of the deposition parameters on phase structure, phase composition, surface morphology and electrochemical properties were investigated using XRD, ICP-OES, SEM, CV and polarization techniques. (C) 2012 Elsevier Ltd. All rights reserved.
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