کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10275826 463397 2005 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Electrochemical behavior of Ni particles modified polypyrrole films studied by EQCN technique
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Electrochemical behavior of Ni particles modified polypyrrole films studied by EQCN technique
چکیده انگلیسی
Polypyrrole films modified with Ni Particles were eletrodeposited using a constant potential on a Pt/quartz crystal electrode with the aim to investigate the changes in the voltammetric and mass profiles compared with pure polypyrrole. The electrochemical behavior of the polypyrrole with Ni showed a new cathodic peak at −0.73 V associated to Ni2+ reduction. Besides, it was characterized that there is a redox-pair of the polymer and Ni and a model was proposed to explain the phenomenon considering the eletroneutrality principle. The transport of the ClO4- ion into (or outside) the polymer is opposite to the expected direction. This occurs due to the redox-pair between the PPy chain and Ni species which can be explained by a loss of anions during Ni oxidation and the gain of anions during the Ni reduction.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Electroanalytical Chemistry - Volume 583, Issue 1, 1 September 2005, Pages 162-166
نویسندگان
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