A study of stability of plasticized PEO electrolytes

Chadwick, A.V. and Ranieri, G.A. and Terenzi, M. and Webster, M.I. and Nicotera, I. (2002) A study of stability of plasticized PEO electrolytes. Solid State Ionics, 146 (1-2). pp. 143-150. ISSN 0167-2738. (Access to this publication is restricted)

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Abstract

Considerable research effort has been devoted to lowering the useful operating temperature of PEO-LiX polymer electrolytes to the ambient region. The most common approach has been that of adding liquid plasticizers, such as ethylene carbonate (EC) or propylene carbonate (PC), to the PEO-LiX matrix. In this paper, we have extensively studied EC plasticized LiCF3SO3.P(EO)(10) and LiClO4.P(EO)10, measuring the conductivity, thermal characteristics and X-ray diffraction patterns of the electrolyte films. A very significant feature of the results is that the enhanced conductivity of the as-prepared films is transient and is not maintained on thermal cycling under vacuum. The systems are not thermodynamically stable due to a loss of the bulk of the plasticizer and this will impair their applications in devices.

Item Type: Article
Uncontrolled keywords: polymer electrolytes; poly(ethylene oxide); plasticizers; ionic conductivity; lithium triflate; lithium perchlorate
Subjects: Q Science
Divisions: Faculties > Science Technology and Medical Studies > School of Physical Sciences > Functional Materials Group
Faculties > Science Technology and Medical Studies > School of Physical Sciences
Depositing User: Alan Chadwick
Date Deposited: 21 Oct 2008 15:37
Last Modified: 06 Sep 2011 00:22
Resource URI: http://kar.kent.ac.uk/id/eprint/9395 (The current URI for this page, for reference purposes)
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