Premium
Electrochemical synthesis and In situ spectroelectrochemistry of conducting NMPy‐TiO 2 and ZnO polymer nanocomposites for Li secondary battery applications
Author(s) -
Arjomandi Jalal,
Keramat Irad Mossa Niloofar,
Jaleh Babak
Publication year - 2015
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.41526
Subject(s) - nanocomposite , materials science , fourier transform infrared spectroscopy , cyclic voltammetry , scanning electron microscope , polymer , conductive polymer , polymer nanocomposite , transmission electron microscopy , chemical engineering , electrochemistry , polymer chemistry , composite material , nanotechnology , electrode , chemistry , engineering
Poly( N ‐methylpyrrole) (PNMPy), poly( N ‐methylpyrrole‐TiO 2 ) (PNMPy‐TiO 2 ), and poly ( N ‐methylpyrrole‐ZnO) (PNMPy‐ZnO) nanocomposites were synthesized by in situ electropolymerization for cathode active material of lithium secondary batteries. The charge–discharging behavior of a Li/LiClO 4 /PNMPy battery was studied and compared with Li/LiClO 4 /PNMPy‐nanocomposite batteries. The nanocomposites and PNMPy films were characterized by cyclic voltammetry, in situ resistivity measurements, in situ UV–visible, and Fourier transform infra‐red (FTIR) spectroscopy, scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The differences between redox couples (Δ E ) were obtained for polymer nanocomposites and PNMPy films. During redox scan, a negative shift of potential was observed for polymer nanocomposite films. Significant differences from in situ resistivity of nanocomposites and PNMPy films were obtained. The in situ UV–visible spectra for PNMPy and polymer nanocomposite films show the intermediate spectroscopic behavior between polymer nanocomposites and PNMPy films. The FTIR peaks of polymer nanocomposite films were found to shift to higher wavelengths in PNMPy films. The SEM and TEM micrographs of nanocomposite films show the presence of nanoparticle in PNMPy backbone clearly. The result suggests that the inorganic semiconductor particles were incorporated in organic conducting PNMPy, which consequently modifies the properties and morphology of the film significantly. © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015 , 132 , 41526.