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Electrochemical oscillations in the methanol oxidation on Pt

MPS-Authors
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Lee,  Jaeyoung
Physical Chemistry, Fritz Haber Institute, Max Planck Society;

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Eickes,  Christian
Physical Chemistry, Fritz Haber Institute, Max Planck Society;

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Eiswirth,  Markus
Physical Chemistry, Fritz Haber Institute, Max Planck Society;

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Ertl,  Gerhard
Physical Chemistry, Fritz Haber Institute, Max Planck Society;

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Citation

Lee, J., Eickes, C., Eiswirth, M., & Ertl, G. (2002). Electrochemical oscillations in the methanol oxidation on Pt. Electrochimica Acta, 47(13-14), 2297-2301. doi:10.1016/S0013-4686(02)00075-0.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0011-14CD-D
Abstract
Experimental observations of temporal dynamics in the electrocatalytic oxidation of methanol (CH3OH) on a polycrystalline platinum electrode are reported, Hidden negative differential resistance (HNDR) and instabilities of the system were investigated by means of an electrochemical impedance spectrum analysis and potential oscillations under galvanostatic control. This result could be applied for a direct methanol fuel cell (DMFC) with higher energy efficiency.