Application of polyacrylonitrile-based polymer electrolytes in rechargeable lithium batteries

K.S. Perera, M.A.K.L. Dissanayake, Steen Skaarup, Keld West

Research output: Contribution to journalConference articleResearchpeer-review

Abstract

Polyacrylonitrile (PAN)-based polymer electrolytes have obtained considerable attention due to their fascinating characteristics such as appreciable ionic conductivity at ambient temperatures and mechanical stability. This study is based on the system PAN-ethylene carbonate (EC)-propylene carbonate (PC)-lithium trifluoromethanesulfonate (LiCF3SO3). The composition 15 mol% PAN-42 mol% EC-36 mol% PC-7 mol% LiCF3SO3 has shown a maximum room temperature conductivity of 1.2 x 10(-3) stop S cm(-1) stop. Also, it was possible to make a thin, transparent film out of that composition. Cells of the form, Li/PAN-EC-PC-LiCF3SO3/polypyrrole (PPy)-alkylsulfonate (AS) were investigated using cyclic voltammetry and continuous charge-discharge tests. When cycled at low scan rates, a higher capacity could be obtained and well-defined peaks were present. The appearance of peaks elucidates the fact that redox reactions occur completely. This well proves the reason for higher capacity. The average specific capacity was about 43 Ah kg(-1) stop. Cells exhibited a charge factor close to unity during continuous charging and discharging, indicating the absence of parasitic reactions.
Original languageEnglish
JournalJournal of Solid State Electrochemistry
Volume12
Issue number7-8
Pages (from-to)873-877
ISSN1432-8488
DOIs
Publication statusPublished - 2008
EventICMAT 2007, Symposium K: Nanostructured and bulk materials for electrochemical power sources - Singapore (SG)
Duration: 1 Jan 2007 → …

Conference

ConferenceICMAT 2007, Symposium K: Nanostructured and bulk materials for electrochemical power sources
CitySingapore (SG)
Period01/01/2007 → …

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