L. Tomcsanyi et al., THE EFFECT OF RUO2 TIO2 RATIO ON THE RATE OF AN OUTER-SPHERE ELECTRON-TRANSFER REACTION ON MIXED-OXIDE ELECTRODES/, Electrochimica acta, 39(11-12), 1994, pp. 1923-1926
The apparent heterogeneous rate constants can be determined by a speci
al cv technique in solutions containing both the oxidized and the redu
ced forms of a redox couple. The electrode materials are characterized
by the difference between the k(ox)(0) and k(red)(0). The effect of R
uO2/TiO2 ratio on the electrochemical effective surface area and the a
pparent rate constants of a redox system are investigated. The optimal
composition of the RuO2/TiO2 electrode seems ta be in the 0.6-0.9 RuO
2 mole fraction range.