Deactivation and selectivity for electrochemical ozone production at Ni- and Sb-doped SnO2/Ti electrodes

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F20%3A10425323" target="_blank" >RIV/00216208:11320/20:10425323 - isvavai.cz</a>

Result on the web

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=bqqzTp7TxO" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=bqqzTp7TxO</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.electacta.2020.135645" target="_blank" >10.1016/j.electacta.2020.135645</a>

Result language

angličtina

Original language name

Deactivation and selectivity for electrochemical ozone production at Ni- and Sb-doped SnO2/Ti electrodes

Original language description

This work reports on a time-resolved study of the deactivation of electrochemical ozone production (EOP) active anodes using a novel approach to measure total ozone production. The reproducibility and change of the electrodes over time have been investigated using a number of electrochemical and physical techniques. The dissolution of antimony from the surface of the nickel- and antimony-doped tin oxide (NATO) electrode is the main process behind the deactivation of the EOP. When surface antimony is depleted, the continued deactivation seems to be connected to the dissolution of nickel. Despite tin (from the coating) and titanium (from the substrate) continuously dissolving during galvanostatic polarization of the NATO electrode, our experiments point to no connection between these processes and the EOP activity. In addition, the selectivity of the electrode is affected by electrolyte penetration, accessing fresh reaction sites that are active on the EOP. The results indicate that both antimony (III) and nickel present at the surface of the NATO are responsible for the EOP activity. (C) 2020 Elsevier Ltd. All rights reserved.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10305 - Fluids and plasma physics (including surface physics)

Project

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Continuities

—

Publication year

2020

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Electrochimica Acta

ISSN

0013-4686

e-ISSN

—

Volume of the periodical

335

Issue of the periodical within the volume

Mar

Country of publishing house

GB - UNITED KINGDOM

Number of pages

9

Pages from-to

135645

UT code for WoS article

000511293800020

EID of the result in the Scopus database

2-s2.0-85078059874