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Conductivity Behaviour of Nanocomposite Polymer Electrolytes: Role of Fumed Silica and Plasticizer
Author(s) -
Sekhon S. S.,
Sharma J. P.,
Park J. S.
Publication year - 2007
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.200750334
Subject(s) - fumed silica , conductivity , plasticizer , electrolyte , materials science , polyethylene oxide , polymer , propylene carbonate , dissociation (chemistry) , ionic conductivity , chemical engineering , nanocomposite , polymer chemistry , fourier transform infrared spectroscopy , chemistry , organic chemistry , composite material , electrode , engineering
Polymer electrolytes obtained by the complexation of ammonium bifluoride (NH 4 HF 2 ) with polyethylene oxide (PEO) have been studied. The addition of propylene carbonate (PC) results in conductivity enhancement by two orders of magnitude and shows conductivity of 1.4 × 10 −4 S/cm at 25 °C, whereas the addition of fumed silica results in conductivity enhancement and show conductivity of 1.19 × 10 −5 S/cm at 25 °C. However simultaneous addition of plasticizer (PC) and fumed silica to polymer electrolytes has been found to result in higher conductivity of 1.55 × 10 −4 S/cm at 25 °C alongwith better mechanical properties. The complexation of NH 4 HF 2 with PEO, formation of ion aggregates and their dissociation with the addition of PC has also been studied by FTIR.