M.V. Sangaranarayanan

The specific capacitance of polyaniline (PANI) deposited potentiodynamically on a stainless steel (SS) substrate, in the presence of p-toluene sulphonic acid (PTS) is estimated. Cyclic voltammetric experiments, galvanostatic charge-discharge studies and impedance analysis are carried out in order to investigate the applicability of the system as an electrochemical supercapacitor. Fourier transform infrared (FTIR), X-ray diffraction (XRD) and scanning electron microscopy (SEM) techniques are employed for characterization of the electrode. © 2006 Elsevier B.V. All rights reserved.

The progress in the field of electrochemical supercapacitors employing polyaniline and polypyrrole during the past decade is reviewed, with special emphasis on electrochemical characterization techniques. The magnitude of the specific capacitance from the galvanostatic charge-discharge studies, cyclic voltammetry and impedance spectroscopy has been compiled. The merit of the Electrochemical Impedance Spectroscopy in deducing the system parameters is pointed out. The unsolved issues pertaining to the conducting polymers based supercapacitors are highlighted. © 2012 Elsevier Ltd.

Polyaniline is deposited potentiodynamically on a nickel substrate in the presence of p-toluene sulfonic acid and the specific capacitance is estimated. The electrochemical characterisation of the electrode is carried out by means of cyclic voltammetry, electrochemical impedance spectroscopy, and galvanostatic charge-discharge experiments. The specific capacitance is ∼4.05 × 102 F g-1. This indicates the feasibility of the polyaniline-coated nickel electrode for use in electrochemical supercapacitors. © 2005 Elsevier B.V. All rights reserved.

The Potentiodynamic deposition of polyaniline on stainless steel electrodes has been carried out using the anionic surfactant sodium tetradecyl sulphate in the presence of acetic acid. The PANI-coated SS electrode was characterized using different spectroscopic and microscopic techniques. The efficacy of the electrode was analyzed for non-enzymatic sensing of D-sorbitol. Amperometric and impedimetric studies reveal the suitability of the electrode for sensing. A detection limit of 5 μM along with a linear range spanning of 75-637 μM and sensitivity of 0.027 μA μM-1 is deduced from the amperometric analysis.

The influence of Triton X-100 in enhancing the capacitance of polyaniline-based nickel electrodes is reported. Cyclic voltammetric experiments, galvanostatic charge-discharge studies and impedance analysis were carried out in order to investigate the applicability of the system as an electrochemical supercapacitor. A qualitative interpretation of the enhancement is provided. Fourier transform infrared (FTIR), X-ray diffraction and scanning electron microscopy techniques were employed for characterization of the electrode. © 2005.