Ionic transport in conducting polymers/nickel tetrasulfonated phthalocyanine modified electrodes

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摘要：

This work describes the study of the ionic transport in polyaniline (PANI) and polypyrrole (PPY) modified electrodes polymerized in presence of nickel tetrasulfonated phthalocyanine (NiTsPc). Elemental analysis and infrared spectroscopy were used to characterize the resulting composite films. The impact of the phthalocyanine incorporation was evaluated by electrochemical quartz crystal microbalance under potentiodynamic conditions. Results have shown that the presence of the negative charge (SO 3 groups) modifies the nature of the 'ionic exchange' membranes, during the cycling. In the case of PANI/NiTsPc modified electrodes, the electroneutralization is mainly achieved by the participation of protons both in HCl and in camphorsulfonic acid (HCSA) electrolyte solutions. For PPY/NiTsPc composites, the cation contribution is dominant in the case of LiCl and NaCl solutions and the anion transport becomes important when CsCl and BaCl 2 solutions are used.

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关键词：

Experimental/ conducting polymers electrochemical electrodes electrochemistry infrared spectra ionic conductivity membranes nickel compounds polymer electrolytes polymerisation/ ionic transport conducting polymers nickel tetrasulfonated phthalocyanine modified electrodes polyaniline modified electrodes polypyrrole modified electrodes polymerisation elemental analysis infrared spectroscopy composite films phthalocyanine incorporation impact electrochemical quartz crystal microbalance potentiodynamic conditions ionic exchange membranes electroneutralization protons participation electrolyte solutions PPY-NiTsPc composites cation contribution anion transport/ A6630H Self-diffusion and ionic conduction in solid nonmetals A8245 Electrochemistry and electrophoresis A6140K Structure of polymers, elastomers, and plastics A8235 Polymer reactions and polymerization A8265F Film and membrane processes ion exchange dialysis osmosis, electro-osmosis A7830L Infrared and Raman spectra in disor