FT-IR spectroscopic investigation of ionic interactions in PPG 4000: AgCF3SO3 polymer electrolyte

被引：36

作者：

Suthanthiraraj, S. Austin ^{[1
]}

Kumar, R. ^{[1
]}

Paul, B. Joseph ^{[1
]}

机构：

[1] Univ Madras, Dept Energy, Madras 600025, Tamil Nadu, India

来源：

SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY | 2009年 / 71卷 / 05期

关键词：

Poly(propylene glycol); Silver triflate; Ion pairs; FT-IR; LOW-SALT CONCENTRATIONS; TRANSPORT-PROPERTIES; CONDUCTIVITY; ASSOCIATION; LICF3SO3; TRIFLATE; NACF3SO3; LITHIUM; LICLO4;

D O I：

10.1016/j.saa.2008.07.040

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

摘要：

The effect of salt concentration on the ubiquitous ionic interactions observed in the case of the silver ion conducting polymer electrolyte system poly(propylene glycol) (PPG)-silver triflate has been investigated using Fourier transform infrared (FT-IR) spectroscopy as a probe for the characterization of the local environment of the triflate ion in PPG-based polymer electrolytes. The maximum free anion concentrations of symmetric and asymmetric SO3 stretching modes in the case of poly(propylene glycol) complexed with silver triflate (AgCF3SO3) corresponding to the ether oxygen metal cation ratios from 2:1 to 6:1 have been investigated in detail. The present Fourier transform infrared spectral studies of the C-O-C stretching mode have shown reduction in the intensity, due to the decrease of salt concentration. The splitting of vibrational modes has been analyzed in terms of free ions, ion pairs and aggregates. The bands of SO3 symmetric stretching mode appearing at 1032 and 1038 cm(-1) in the chosen polymer electrolyte material have been assigned to free ions and ion pairs respectively. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：2012 / 2015

页数：4

共 17 条

[1] IONIC-CONDUCTIVITY IN POLY(PROPYLENE GLYCOL) COMPLEXED WITH LITHIUM AND SODIUM TRIFLATE [J].

ALBINSSON, I ;

MELLANDER, BE ;

STEVENS, JR .

JOURNAL OF CHEMICAL PHYSICS, 1992, 96 (01) :681-690

[2] ION ASSOCIATION EFFECTS AND IONIC-CONDUCTIVITY IN POLYMER ELECTROLYTES [J].

ALBINSSON, I ;

MELLANDER, BE ;

STEVENS, JR .

SOLID STATE IONICS, 1993, 60 (1-3) :63-66

[3] Triflate ion association in plasticized polymer electrolytes [J].

Bishop, AG ;

MacFarlane, DR ;

McNaughton, D ;

Forsyth, M .

SOLID STATE IONICS, 1996, 85 (1-4) :129-135

[4]

Bruce P.G., 1995, Solid state electrochemistry, V1st

[5] THE MECHANISM OF CONDUCTIVITY OF LIQUID POLYMER ELECTROLYTES [J].

CAMERON, GG ;

INGRAM, MD ;

SORRIE, GA .

JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS I, 1987, 83 :3345-3353

[6] Conductivity and dielectric properties of AgCF3SO3-PPG [J].

Eliasson, H ;

Albinsson, I ;

Mellander, BE .

MATERIALS RESEARCH BULLETIN, 2000, 35 (07) :1053-1065

[7] Ionic interactions and transport properties in methyl terminated poly(propylene glycol)(4000) complexed with LiCF3SO3 [J].

Ferry, A .

JOURNAL OF PHYSICAL CHEMISTRY B, 1997, 101 (02) :150-157

[8] Studies of ionic interactions in poly(propylene glycol)4000 complexed with triflate salts [J].

Ferry, A ;

Jacobsson, P ;

Stevens, JR .

JOURNAL OF PHYSICAL CHEMISTRY, 1996, 100 (30) :12574-12582

[9] THE MOLAR CONDUCTIVITY BEHAVIOR IN POLYMER ELECTROLYTES AT LOW-SALT CONCENTRATIONS - A RAMAN-STUDY OF POLY(PROPYLENE GLYCOL) COMPLEXED WITH LICF3SO3 [J].

FERRY, A ;

JACOBSSON, P ;

TORELL, LM .

ELECTROCHIMICA ACTA, 1995, 40 (13-14) :2369-2373

[10] A pfg-NMR investigation of the diffusion coefficients of anionic species in the system PPG4000-LiCF3SO3 [J].

Ferry, A ;

Oradd, G ;

Jacobsson, P .

MACROMOLECULES, 1997, 30 (23) :7329-7331

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