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Spin-coated antimony- and nickel-doped tin dioxide electrodes foranodic ozone evolution
Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences.
2015 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

This work have served as a preliminary work for a more extensiveresearch on antimony- and nickel-doped tin dioxide electrodes used forozone generation in electrolytic reactions. The target has been to test themanufacturing process of Sb/Ni-doped SnO2 with spin-coating techniqueand succeed to make electrodes for anodic ozone evolution and tocharacterize them. Electrode manufacturing was made using sol-gelfrom chloride salts of tin, antimony and nickel, which were applied to atitanium substrate through spin-coating. The substrates were spun todifferent thickness followed by drying and baking of the substrate. A setof electrodes with three layers were made just with spin-coating, additionallya set of electrodes with twenty layers were made with bothspin-coating and dip-coating. To characterize physical properties of theelectrodes, x-ray diffraction, scanning electron microscopy and transmissionelectron microscopy were conducted. Electrochemical measurementswere made in open beakers with a platinum cathode andsulphuric acid electrolyte using a galvanostatic measurement with afixed current. To measure the ozone evolution the optical absorbancedifference from the electrolyte compared to a clean electrolyte wasmeasured, this however only measures the amount of aqueous ozonepresent. Assembling of SnO2 electrodes for ozone evolution was successful.For the three-layered electrodes the absorbance readings wereinconclusive but with the twenty-layered electrodes there was a smell ofozone present within the electrolyte and absorbance reading of the dipcoatedelectrode presented a clear peak for ozone.

Place, publisher, year, edition, pages
2015. , 47 p.
Keyword [en]
Sb/Ni-doped SnO2, Spin-coating, Ozone evolution
National Category
Engineering and Technology
URN: urn:nbn:se:miun:diva-25077OAI: diva2:816560
Subject / course
Engineering Physics TF1
Educational program
Master of Science in Engineering Physics TTFYA 300 higher education credits
Available from: 2015-06-03 Created: 2015-06-03 Last updated: 2015-06-03Bibliographically approved

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Sjölander, Joel
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