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Citation: Cui Cheng-Qiang, Zhang Ying-Zhou, Zhou Shao-Min. Voltammetric Characteristics of RuO₂ Electrode[J]. Acta Physico-Chimica Sinica, ;1990, 6(02): 159-162. doi: 10.3866/PKU.WHXB19900207 shu

Voltammetric Characteristics of RuO₂ Electrode

1.
Department of Chemistry and Institute of Physical Chemistry, Xiamen University

Received Date: 5 July 1988
Available Online: 15 April 1990

The voltammetric characteristics of RuO_2 electrode has been studied by means of cyclic voltammetry and pulse polarography. In the potential range of 0.2-0.8 V, there are two redox reactions as follows:
RuOOH<+>RuO_2+H~++e
RuO_2+H_2O<=>RuO_3+2H~++2e
but not one redox reaction to turn Ru~(3+) into Ru~(4+).
The oxygen-deficient structures are the active sites whose disappearance results in the deactivation of the electrode.
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Voltammetric Characteristics of RuO₂ Electrode