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Deposition efficiency in the preparation of ozone-producing nickel and antimony doped tin oxide anodes
KTH.
KTH.
Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences.
KTH.
2017 (English)In: Journal of Electrochemical Science and Engineering, ISSN 1847-9286, Vol. 7, no 1, 51-64 p.Article in journal (Refereed) Published
Abstract [en]

The influence of precursor salts in the synthesis of nickel and antimony doped tin oxide (NATO) electrodes using thermal decomposition from dissolved chloride salts was investigated. The salts investigated were SnCl45H2O, SnCl22H2O, SbCl3and NiCl26H2O. It was shown that the use of SnCl45H20 in the preparation process leads to a tin loss of more than 85 %. The loss of Sb can be as high as 90 % while no indications of Ni loss was observed. As a consequence, theconcentration of Ni in the NATOcoating will be much higher than in the precursor solution. This high and uncontrolled loss of precursors during the preparation process will lead to an unpredictable composition in the NATOcoating and will have negative economic and environmental effects. It was found that using SnCl22H20 instead of SnCl45H2Ocan reduce the tin loss to less than 50 %. This tin loss occurs at higher temperatures than when using SnCl45H2Owhere the tin loss occurs from 56–147°C causingthe composition to change both during the drying (80–110°C) and calcination (460 -550 °C) steps of the preparation process. Electrodes coated with NATObased on the two different tin salts were investigated for morphology, composition, structure, and ozone electrocatalytic properties.

Place, publisher, year, edition, pages
2017. Vol. 7, no 1, 51-64 p.
Keyword [en]
NATO, ATO, tin chloride precursor, thermal decomposition, TGA, deposition, efficiency, dopant enrichment, ozone electrocatalysis
National Category
Other Chemical Engineering
Identifiers
URN: urn:nbn:se:miun:diva-31226DOI: 10.5599/jese.374ISI: 000409210400005OAI: oai:DiVA.org:miun-31226DiVA: diva2:1120604
Projects
högox
Funder
Swedish Research Council Formas
Available from: 2017-07-06 Created: 2017-07-06 Last updated: 2017-11-29Bibliographically approved

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Publisher's full texthttp://dx.doi.org/10.5599/jese.374

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