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Citation: Jin Shi-Xiong, Wang Lan. Kinetics and Mechanism of Oxygen Evolution at Ti/RuO₂+TiO₂ Anodes in Acid Solutions[J]. Acta Physico-Chimica Sinica, ;1990, 6(02): 134-138. doi: 10.3866/PKU.WHXB19900203 shu

Kinetics and Mechanism of Oxygen Evolution at Ti/RuO₂+TiO₂ Anodes in Acid Solutions

Jin Shi-Xiong ,
Wang Lan

1.
Department of Chemistry, Nankai University

Received Date: 20 September 1988
Available Online: 15 April 1990

The kinetics of anodic O_2 evolution on Ti/RuO_2+TiO_2 anodes was studied in acid solutions, by with two Tafel regions have been confirmed. At low current densities i.e. the first Tafel region ?φ/lgi=2.303RT/((1+β)F, whereas at high cds i. e. second Tafel region it is 2.303RT/βF. In the low current densities region, the reaction order with respect to α_w is 4. For the second Tafel region the reaction order is 2.
The kinetic data obtained show that the rate determining step of the anodic evo-lution of oxygen on Ti/RuO_2+TiO_2 anodes in acid solutions is
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Kinetics and Mechanism of Oxygen Evolution at Ti/RuO2+TiO2 Anodes in Acid Solutions

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Kinetics and Mechanism of Oxygen Evolution at Ti/RuO₂+TiO₂ Anodes in Acid Solutions