TY - JOUR
T1 - Structural effects on the dynamics of an electrocatalytic oscillator
AU - Eiswirth, M.
AU - Lübke, M.
AU - Krischer, K.
AU - Wolf, W.
AU - Hudson, J. L.
AU - Ertl, G.
PY - 1992/5/1
Y1 - 1992/5/1
N2 - The electrocatalytic oxidation of hydrogen in the presence of Cu2+ and Cl- ions under galvanostatic conditions has been studied on the three low-index plane surfaces of platinum. Over the parameter ranges investigated and with the electrode pretreatment used, no oscillations were observed on Pt(110), whereas only simple periodic oscillations were seen with Pt(111). The Pt(100) surface, on the other hand, exhibited a variety of oscillation types, including simple periodic oscillations, period-doubling, chaos and mixed-mode behavior as two parameters, copper ion concentration and current density, were varied. The dynamics on Pt(100) turned out qualitatively very similar to that observed previously on polycrystalline platinum electrodes.
AB - The electrocatalytic oxidation of hydrogen in the presence of Cu2+ and Cl- ions under galvanostatic conditions has been studied on the three low-index plane surfaces of platinum. Over the parameter ranges investigated and with the electrode pretreatment used, no oscillations were observed on Pt(110), whereas only simple periodic oscillations were seen with Pt(111). The Pt(100) surface, on the other hand, exhibited a variety of oscillation types, including simple periodic oscillations, period-doubling, chaos and mixed-mode behavior as two parameters, copper ion concentration and current density, were varied. The dynamics on Pt(100) turned out qualitatively very similar to that observed previously on polycrystalline platinum electrodes.
UR - http://www.scopus.com/inward/record.url?scp=0001295727&partnerID=8YFLogxK
U2 - 10.1016/0009-2614(92)85461-I
DO - 10.1016/0009-2614(92)85461-I
M3 - Article
AN - SCOPUS:0001295727
SN - 0009-2614
VL - 192
SP - 254
EP - 258
JO - Chemical Physics Letters
JF - Chemical Physics Letters
IS - 2-3
ER -