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Author(s):
Schmidt, T. J.; Stamenkovic, V.; Arenz, M.; Markovic, N. M.; Ross, P. N. 
Title:
Oxygen electrocatalysis in alkaline electrolyte: Pt(hkl), Au(hkl) and the effect of Pd-modification 
Abstract:
The kinetics of the oxygen redn. reaction (ORR) was studied in alk. electrolyte at 293-333 K on bare and Pd modified Pt(hkl) and Au(hkl) surfaces. The rotating ring-disk electrode technique was used to study the ORR with soln. phase peroxide detected at the ring electrode. Pd modification was either by electrodeposition (Pt) or by vapor deposition in vacuum (Au). The surface concn. of Pd was detd. in vacuum using low energy ion scattering. In agreement to the structure sensitivity found at room...    »
 
Keywords:
Reduction catalysts (electrochem. bare and Pd-modified Pt(hkl) and Au(hkl) for oxygen) Reduction kinetics (electrochem. of oxygen on bare and Pd-modified Pt(hkl) and Au(hkl) electrodes in alk. soln.) Activation enthalpy (in oxygen electrocatalytic redn. on platinum) Crystal orientation (of gold and platinum in oxygen electrocatalytic redn. on bare and Pd-modified Pt(hkl) and Au(hkl) electrodes in alk. soln.) Reduction (of oxygen on bare and Pd-modified Pt(hkl) and Au(hkl) electrodes in alk. soln...    »
 
Congress title:
CAN 138:46221 72-2 Electrochemistry Lawrence Berkeley National Laboratory, Materials Sciences Division, University of California, Berkeley, CA, USA. Journal 0013-4686 7782-44-7 (Oxygen) Role: PRP (Properties), RCT (Reactant), RACT (Reactant or reagent) (electrochem. redn. in alk. electrolyte on bare and Pd-modified Pt(hkl) and Au(hkl)); 14280-30-9 (Hydroxide); 14691-59-9 (Peroxide ho2-) Role: FMU (Formation, unclassified), PRP (Properties), FORM (Formation, nonpreparative) (formation in oxygen...    »
 
Journal title:
Electrochim. Acta 
Year:
2002 
Journal volume:
47 
Journal issue:
22-23 
Pages contribution:
3765-3776