The formation of O-2/O-3 on PbO2 from the electrolysis of water in neutral solutions is shown here to present some analogies and some differences with respect to the same process in acid media. The electrolyte composition affects the current efficiency for O-3 formation (n) and the cell potential (E) of a Membrel type electrochemical assembly. An improvement in n and a decrease in E is observed upon addition of relatively low amounts of Na4SO4 or NaClO4 in pure water. We observe no effect of NaNO3 on either parameters. In agreement with literature data in acid solutions, F- causes an increase in both n and E.
INFLUENCE OF ANIONS ON OXYGEN/OZONE EVOLUTION ON PBO2/SPE AND PBO2/TI ELECTRODES IN NEUTRAL PH MEDIA
AMADELLI R;
1994
Abstract
The formation of O-2/O-3 on PbO2 from the electrolysis of water in neutral solutions is shown here to present some analogies and some differences with respect to the same process in acid media. The electrolyte composition affects the current efficiency for O-3 formation (n) and the cell potential (E) of a Membrel type electrochemical assembly. An improvement in n and a decrease in E is observed upon addition of relatively low amounts of Na4SO4 or NaClO4 in pure water. We observe no effect of NaNO3 on either parameters. In agreement with literature data in acid solutions, F- causes an increase in both n and E.File in questo prodotto:
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