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  • 1
    Electronic Resource
    Electronic Resource
    Properties of polyaniline formed at tin dioxide electrodes in weak acid solution: effect of the counterion (1993)
    Springer
    Journal of applied electrochemistry 23 (1993), S. 332-338 
    Details
    ISSN: 1572-8838
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Electrical Engineering, Measurement and Control Technology
    Notes: Abstract Polyaniline films have been formed at tin dioxide electrodes in aqueous 0.4m acetate buffer solutions of pH between 3.5 and 5.5 with added nitrate, perchlorate or halide electrolyte, in order to study the effect of the counterion on the structure and electrochemical properties of the polyaniline film. The films were characterized electrochemically by cyclic voltammetry and by impedance, and morphologically by scanning electron microscopy. Marked differences between the films are found, the highest conductivity and electrochemical response being with nitrate counterion. The films formed are generally flat and porous, with evidence of some small irregular growths. These results are compared to those obtained in sulphuric acid solution.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00296688
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Transient measurements at the wall-jet ring disc electrode (1992)
    Springer
    Journal of applied electrochemistry 22 (1992), S. 1011-1016 
    Details
    ISSN: 1572-8838
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Electrical Engineering, Measurement and Control Technology
    Notes: Abstract Theory is presented for the wall-jet ring disc electrode (WJRDE) which predicts the current transient at the ring resulting from a potential step at a WJRDE disc for the case where the ring is potentiostatted so as to reverse the reaction which occurs at the disc. The shape of such transients, in which double-layer charging effects are minimal, is revealed to be very sensitive to differences in the diffusion coefficient of the electroactive species which reacts at the disc and that of the corresponding product. Accordingly such measurements are recommended for the study of complex electrode processes in order to separate mass transport parameters (diffusion coefficients) from homogeneous kinetic phenomena.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01029578
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    Paper (German National Licenses)
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