NISCAIR Online Periodicals Repository

Research Journals >
Indian Journal of Chemistry -Section A (IJC-A) >
IJC-A Vol.46A [2007] >
IJC-A Vol.46A(12) [December 2007] >

Title: Electrochemical characterization of composite films of polypyrrole and La₁₋xSrxCoO₃ (0 ≤ x ≤ 0.4) for electrocatalysis of O₂ reduction
Authors: Singh, R N
Malviya, M
Issue Date: Dec-2007
Publisher: CSIR
Abstract: Sandwich-type composite films of polypyrrole (PPy) and La₁₋xSrxCoO₃ (0 ≤x≤0.4) on a conductive graphite support (G) have been obtained by electropolymerization for electrocatalysis of the oxygen reduction reaction (ORR). The composite films have been characterized by SEM, EDAX, cyclic voltammetry, impedance and Tafel polarization techniques. The studies show that the composite electrodes are greatly active for the ORR than the non-composite one. The higher Sr substitutions (>0.2 mol) have an adverse effect on the electrocatalytic activity. The rate for the ORR at the composite film has been found to decrease with decreasing pH of the electrolyte. Among all the four composite electrodes studied, the G/PPy/PPy(La₀․₈Sr₀․₂CoO₃)/PPy electrode in 0.5 mol dm⁻³ K₂SO₄ plus 5 m moldm⁻³ KOH at 25ºC exhibits the highest electrocatalytic activity towards the ORR.
Page(s): 1923-1928
ISSN: Int. Cl.⁸ B01J23/00; C25D
Source:IJC-A Vol.46A(12) [December 2007]

Files in This Item:

File Description SizeFormat
IJCA 46A(12) 1923-1928.pdf1.05 MBAdobe PDFView/Open
 Current Page Visits: 859 
Recommend this item


Online Submission of Articles |  NISCAIR Website |  National Knowledge Resources Consortium |  Contact us |  Feedback

Disclaimer: NISCAIR assumes no responsibility for the statements and opinions advanced by contributors. The editorial staff in its work of examining papers received for publication is helped, in an honorary capacity, by many distinguished engineers and scientists.

CC License Except where otherwise noted, the Articles on this site are licensed under Creative Commons License: CC Attribution-Noncommercial-No Derivative Works 2.5 India

Copyright © 2015 The Council of Scientific and Industrial Research, New Delhi. All rights reserved.

Powered by DSpace Copyright © 2002-2007 MIT and Hewlett-Packard | Compliant to OAI-PMH V 2.0

Home Page Total Visits: 163445 since 01-Sep-2015  Last updated on 21-Jun-2016Webmaster: