Ion-transport phenomena in concentrated PEO-based composite polymer electrolytes

The enhancement of the ionic conductivity of Li–P(EO) n -based polymer electrolytes by the addition of finely divided inorganic oxides is the subject of considerable discussion. The increase in ionic conductivity in concentrated composite solid polymer electrolytes (CSPE) is related both to the supp...

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Bibliographic Details
Published inSolid state ionics Vol. 147; no. 1; pp. 141 - 155
Main Authors Golodnitsky, D, Ardel, G, Peled, E
Format Journal Article
LanguageEnglish
Published Amsterdam Elsevier B.V 01.03.2002
Elsevier Science
Subjects
Applied sciences
Composite solid polymer electrolytes
Conduction
Direct energy conversion and energy accumulation
Electrical engineering. Electrical power engineering
Electrical power engineering
Electrochemical conversion: primary and secondary batteries, fuel cells
Exact sciences and technology
Ion-transport phenomena
Plasticizers
Conduction
Plasticizers
Composite solid polymer electrolytes
Ion-transport phenomena
Aluminium oxide
Ethylene oxide polymer
Additive
Ionic conductivity
Polymer solid electrolyte
Ion transport
Lithium
Secondary cell
Electric batteries
Composite material
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Summary:The enhancement of the ionic conductivity of Li–P(EO) n -based polymer electrolytes by the addition of finely divided inorganic oxides is the subject of considerable discussion. The increase in ionic conductivity in concentrated composite solid polymer electrolytes (CSPE) is related both to the suppression of the formation of crystalline PEO and PEO-salt phases and to interfacial conduction. In the case of polycrystalline or polyparticle solid electrolytes, however, grain-boundary (GB) resistance, which is associated with the crossover of ions from particle to particle across grain boundaries orthogonal to the direction of current flow (or parallel to the field lines), must be considered. The conduction across grain boundaries in polymer appears to be ignored so far. In this work, we provide SEM and ECS experimental data on LiI–P(EO)–Al 2O 3 CSPEs. The effects of plasticizers, doping by CaI 2, change in Li/EO ratio, and nanosize alumina concentration on the interior grain ionic conductivity and on the resistance of the orthogonal grain boundaries are addressed.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0167-2738
1872-7689
DOI:10.1016/S0167-2738(01)01036-0