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Ionic conductivity of a novel solid polymer electrolyte
Author(s) -
Xie Wenming,
Xu Peixin,
Liu Qing,
Xie Yi
Publication year - 2001
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1320
Subject(s) - ionic conductivity , electrolyte , ionic bonding , conductivity , solvation , polymer , polymer chemistry , ionic strength , salt (chemistry) , chemistry , alkali metal , inorganic chemistry , materials science , chemical engineering , ion , aqueous solution , organic chemistry , electrode , engineering
Abstract A novel kind of solid polymer electrolyte, the solvation unit of which is OCNHR, has been studied. The effects of host polymer structure, ion species, salt concentration, and plasticizers on ionic conductivity are discussed in detail. The solvability of host polymers is a very important factor that affects the ionic conductivity of electrolytes and is fully decided by the structure of solvation units and their density in polymer chain. The latter two rest with monomers structure and copolymerization ratio. Effects of alkali metal salts and divalent metal salts on ionic conductivity are different because of their different leading factor of cation radius. Salt concentration dependence of ionic conductivity appears as a double‐peak shape when alkali metal salts are added because of the total contribution of two kinds of ionic conductance modes, and appears as similar shapes when divalent metal salts are added. Different influences of plasticizers on ionic conductivity result from their different action ways. Ethylene glycol acts well because of its effective action from three different modes. © 2001 John Wiley & Sons, Inc. J Appl Polym Sci 80: 2176–2184, 2001