Chaotic, mixed-mode and periodic oscillations during the electro-oxidation of copper in trichloroacetic acid | Zendy

Liang Li | Zendy; Shenhao Chena | Zendy; Hongtai Wu | Zendy; Haitao Cui | Zendy

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Chaotic, mixed-mode and periodic oscillations during the electro-oxidation of copper in trichloroacetic acid

Author(s) -

Liang Li,

Shenhao Chena,

Hongtai Wu,

Haitao Cui

Publication year - 2004

Publication title -

journal of the serbian chemical society

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.227

H-Index - 45

eISSN - 1820-7421

pISSN - 0352-5139

DOI - 10.2298/jsc0401033l

Subject(s) - aperiodic graph , copper , trichloroacetic acid , quasiperiodic function , chaotic , electrode , electrochemistry , chemistry , amplitude , analytical chemistry (journal) , materials science , inorganic chemistry , physics , mathematics , optics , condensed matter physics , metallurgy , computer science , combinatorics , chromatography , artificial intelligence , biochemistry

The current oscillations of a copper electrode in trichloroacetic acid solutions were studied in this paper. The Cu/CCl3COOH System is a new electrochemical oscillator showing rich dynamic behaviour on two controllable parameters: the trichloroacetic acid concentration (c(Cl3COOH)) and the imposed potential (E). Phase trajectories were reconstructed from time series using time delay methods in order that the complex oscillations could be analyzed. Five kinds of oscillations. periodic and quasipefiodic. mixed-mode. aperiodic. small amplitude and chaotic current oscillations, were observed. The EDS (energy dispersive spectroscopy) technique was used to analyze the elemental composition of the film formed on the surface of the copper electrode after the current oscillations.

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