Premium
Hydrogen bonding effect on the poly(ethylene oxide), phenolic resin, and lithium perchlorate–based solid‐state electrolyte
Author(s) -
Chen HsienWei,
Jiang ChangHung,
Wu HewDer,
Chang FengChih
Publication year - 2003
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.13200
Subject(s) - lithium perchlorate , ethylene oxide , ether , electrolyte , polymer chemistry , lithium (medication) , ionic conductivity , hydrogen bond , oxide , chemistry , ionic bonding , inorganic chemistry , materials science , polymer , organic chemistry , molecule , ion , copolymer , medicine , electrode , endocrinology
Abstract The interaction behavior of solid‐state polymer electrolytes composed of poly(ethylene oxide) (PEO)/novolac‐type phenolic resin and lithium perchlorate (LiClO 4 ) was investigated in detail by DSC, FTIR, ac impedance, DEA, solid‐state NMR, and TGA. The hydrogen bonding between the hydroxyl group of phenolic and ether oxygen of the PEO results in higher basicity of the PEO. The higher basicity of the ether group can dissolve the lithium salts more easily and results in a greater fraction of “free” anions and thus higher ionic conductivity. DEA results demonstrated that addition of the phenolic increases the dielectric constant because of the partially negative charge on the ether group induced by the hydrogen bonding interaction between ether oxygen and the hydroxyl group. The study showed that the blend of PEO(100)/LiClO 4 (25)/phenolic(15) possesses the highest ionic conductivity (1.5 × 10 −5 S cm −1 ) with dimensional stability. © 2003 Wiley Periodicals, Inc. J Appl Polym Sci 91: 1207–1216, 2004