Novel solid state polymeric batteries

Patrick, Andrew; Glasse, M. D.; Latham, R. J.; Linford, R. G.

doi:10.1016/0167-2738(86)90309-7

Cited by 87 publications

(43 citation statements)

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“…Results of PEO complexes with magnesium salts have been reported by Y ang, M cGhie and Farrington (1986), and Patrick et al (1986). PEOn:MgCl2 and PE0 n:Mg(C1 0 4 ) 2 had comparable conductivity to PEOn:Li systems above 80°C, but the DSC and a(T ) analysis indicated that for M gCl2 complexes two crystalline phases were p resen t, corresponding to pure PEO and the salt rich com plex, w hereas for PE0 n:Mg(C1 0 4 ) 2 there was no evidence for high melting complexes.…”

Section: 15mentioning

confidence: 94%

“…In the case o f ZnCl2 complexes, the Tg elevation levelled out at about 30 mole % from which they proposed a model where on average 2 oxygen atoms were coordinated to each ZnCl2 . The same kind o f observation related to the Tg elevation was found by Fontanella et al (1985) when they studied PEO complexed with barium and calcium thiocyanate.Results of PEO complexes with magnesium salts have been reported by Y ang, M cGhie and Farrington (1986), and Patrick et al (1986). PEOn:MgCl2 and PE0 n:Mg(C1 0 4 ) 2 had comparable conductivity to PEOn:Li systems above 80°C, but the DSC and a(T ) analysis indicated that for M gCl2 complexes two crystalline phases were p resen t, corresponding to pure PEO and the salt rich com plex, w hereas for PE0 n:Mg(C1 0 4 ) 2 there was no evidence for high melting complexes.…”

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confidence: 94%

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Conducting Polymers and Polymer Electrolytes

Rubinson¹,

Mark²

2002

ACS Symposium Series

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UMI Number: U547216All rights reserved INFORMATION TO ALL U SE R S The quality of this reproduction is d ep endent upon the quality of the copy submitted.In the unlikely event that the author did not sen d a com plete manuscript and there are m issing p a g es, th e se will be noted. Also, if material had to be removed, a note will indicate the deletion. Disscrrlation PublishingUMI CONDUCTING POLYMERS AND POLYMER ELECTROLYTESby Walkiria Santos Schlindwein Abstract Polymers are mostly used as insulator materials. Since the late sixties, two new classes of polymeric materials possessing either ionic or electronic conductivities have been extensively studied. The work carried out in this thesis concerns of the study of polymer electrolytes based on poly (ethylene oxide) (PEO) complexed with divalent salts (ionic conductors) and polypyrroles (PPy) electrochem icdly and chemically prepared (electronic conductors). DiÉerent techniques were used to study their properties including Differential Scanning Calorimetry 03SC), Variable Temperature Polarising M icroscopy (VTPM), Extended X-ray Absorption Fine Structure (EXAFS), a.c. Impedance, Cyclic Voltammetry, and Fourier Transform Infra-Red Spectroscopy (FTIR).W ater-cast film s o f P E 0n:Z nX 2 (X = Cl, Br, I) were prepared at a range of stoichiometries. The effects of either residual presence of water or thermal treatment related to the formation of high melting crystalline materials were investigated. The morphology of the zinc halides films differs from similar films cast from acetonitrile/methanol mixtures. The presence of high melting crystalline material in the water cast samples is influenced mostly by the concentration, type of anion and drying procedure applied to the samples. The high melting crystalline materials in the zinc samples are more affected by the drying regime. In some cases, solvent effects can be removed by using a high temperature (e.g. 180°C) drying regime. The presence of water normally depresses the melting temperature of the crystalline structures.Films of PE0 n:CaBr2 and PE0 n:NiBr2 cast from water were also examined. The high melting crystalline materials in the calcium samples are more affected by the presence of water. The nickel samples are highly crystalline and the presence of high melting material does not seem to be influenced by either the presence of solvent or the drying procedure.EXAFS was used as a suitable technique to probe the local structure surrounding the cation. The results of the zinc halide samples gave some indication o f the interionic and polym er-cation interactions. It was demonstrated that the halogen provides the most substantial contribution for the total EXAFS spectrum and the oxygen contribution is much less significant, except in the case of PEOn:ZnCl2 samples. This could be due to the size of the nearest neighbour atoms and/or to the interaction polymer-cation. The presence of neutral "ion pairing" is suggested for the PEOn:ZnBr2 samples. The EXAFS results for the samples containing NiBr2 indicated a stro...

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Section: 15mentioning

confidence: 94%

mentioning

confidence: 94%

Conducting Polymers and Polymer Electrolytes

Rubinson¹,

Mark²

2002

ACS Symposium Series

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“…Therefore safety problems associated with magnesium metal are minimal. ii) the ionic radii of Li + and Mg 2+ are comparable in magnitude [6] iii) natural sources of magnesium are plentiful and thus it is cheaper than lithium.…”

Section: Introductionmentioning

confidence: 99%

“…Apart from lithium salt complexes, some other electrolytes are also reported containing salts of sodium, magnesium and zinc metals [3][4][5]. Presently the world wide attention has focused on the high performance and environment friendly nature of energy storage devices.…”

Section: Introductionmentioning

confidence: 99%

XRD, Conductivity studies on PVA-PEG blend based Mg2+ ion conducting polymer electrolytes

Ravindran¹,

Vickraman²

2012

IJSEA

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Poly vinyl alcohol (PVA) and polyethylene glycol (PEG) blend based Mg 2+ ion conducting polymer electrolytes have been prepared. Polyethylene glycol (PEG) with three different molecular weights 200,400 and 600 has been used and the effect of this molecular weight on the ionic onductivity of the electrolytes is studied through XRD, ac impedance technique. The analysis shows that the PEG with mol.wt 600 is more effective in reducing the crystallinity and enhancing the conductivity properties of the electrolytes.

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“…Apart from lithium salt complexes, some other electrolytes were also reported containing salts of sodium, magnesium and zinc metals [3][4][5]. Presently the world wide attention has focused on the high performance and environment friendly nature of energy storage devices.…”

Section: Introductionmentioning

confidence: 99%