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A confirmation of the O2 reduction mechanism at Pt electrodes from temperature studies

โœ Scribed by D.B. Sepa; M.V. Vojnovic; Lj.M. Vracar; A. Damjanovic

Publisher
Elsevier Science
Year
1984
Tongue
English
Weight
166 KB
Volume
29
Category
Article
ISSN
0013-4686

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New evidence supports the proposed mecha
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An unusual,jk~~tion~I reaction order with respect to H' was reported in this journal [l] and elsewhen$2], for oxygen reduction at oxide bee platinum electrodes in acid solutions. The rate oF the reaction was given by: i 5 kpo,[cn+]3'z exp -G

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The symmetry factor in oxygen reduction at Pt electrodes in acid solutions in the high current density region is close to $=0.45 + 2.3 x 10e4T), and Tafel lines obtained at different temperatures intersect in extrapolation at the critical potential E,, = 0.23 V us she. EC, is the same in solutions o