%0 Journal Article
%T Oxygen reduction on single crystal platinum electrodes in phosphoric acid solutions
%A A. TANAKA
%A R. ADZIC
%A B. NIKOLIC
%J Journal of the Serbian Chemical Society
%D 1999
%I Serbian Chemical Society
%X Oxygen reduction reaction has been studied on Pt low index planes in 0.1 M and 85% H3PO4 using hanging meniscus rotating disc electrode technique. The first-order kinetics of O2 reduction reaction was found for all three surfaces in a four-electron process with the first electron transfer rate determining in both 0.1 M and 85% H2PO4 solutions. Catalytic activity for O2 reduction follows the sequence Pt (110)>>Pt (100)>>Pt (111). Structural dependence is predominantly determined by the adsorption of phosphoric acid anions, which is strongly structure-dependent on Pt surfaces.
%K oxygen reduction
%K Pt low-index single crystal
%K H3PO4
%K hanging meniscus rotating disc electrode
%K current-potential curves
%K Tafel plots
%U http://www.shd.org.yu/HtDocs/SHD/Vol64/No11-Pdf/V64-no11-07.zip