skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Preparation and characterization of cross-linked composite polymer electrolytes

Abstract

Cross-linkable composite electrolytes were prepared from poly(ethylene glycol) dimethyl ether (PEGDME)-500, LiClO{sub 4}, fumed silica, and 10 wt % methyl, butyl, or octyl methacrylate. The silicas used were chemically modified by attaching methacrylate groups to the silica surface through C{sub 8} and C{sub 3} tethers. Before cross-linking, the electrolytes were thixotropic and had ionic conductivities of >2 {times} 10{sup {minus}4} S/cm. After ultraviolet (UV)-induced cross-linking, the electrolytes were rubbery and dimensionally stable, and the conductivities were unchanged. Conductivity, extraction, and thermal analysis data all support a model where the added methacrylate monomer and growing polymer chains phase separate from the electrolyte phase during photopolymerization to yield a methacrylate-rich silica/polymer phase and little or no polymer in the PEGDME-500 phase. Thus, the mechanical properties of the composite electrolyte and its ionic conductivity are decoupled and can be optimized independently.

Authors:
;  [1]
  1. Michigan State Univ., East Lansing, MI (United States)
Publication Date:
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
316240
Resource Type:
Journal Article
Journal Name:
Chemistry of Materials
Additional Journal Information:
Journal Volume: 10; Journal Issue: 11; Other Information: PBD: Nov 1998
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ORGANIC POLYMERS; SOLID ELECTROLYTES; SYNTHESIS; IONIC CONDUCTIVITY; PHOTOLYSIS; CROSS-LINKING; ULTRAVIOLET RADIATION; POLYETHYLENE GLYCOLS; SILICA; METHACRYLATES

Citation Formats

Hou, J, and Baker, G L. Preparation and characterization of cross-linked composite polymer electrolytes. United States: N. p., 1998. Web. doi:10.1021/cm9704894.
Hou, J, & Baker, G L. Preparation and characterization of cross-linked composite polymer electrolytes. United States. https://doi.org/10.1021/cm9704894
Hou, J, and Baker, G L. Sun . "Preparation and characterization of cross-linked composite polymer electrolytes". United States. https://doi.org/10.1021/cm9704894.
@article{osti_316240,
title = {Preparation and characterization of cross-linked composite polymer electrolytes},
author = {Hou, J and Baker, G L},
abstractNote = {Cross-linkable composite electrolytes were prepared from poly(ethylene glycol) dimethyl ether (PEGDME)-500, LiClO{sub 4}, fumed silica, and 10 wt % methyl, butyl, or octyl methacrylate. The silicas used were chemically modified by attaching methacrylate groups to the silica surface through C{sub 8} and C{sub 3} tethers. Before cross-linking, the electrolytes were thixotropic and had ionic conductivities of >2 {times} 10{sup {minus}4} S/cm. After ultraviolet (UV)-induced cross-linking, the electrolytes were rubbery and dimensionally stable, and the conductivities were unchanged. Conductivity, extraction, and thermal analysis data all support a model where the added methacrylate monomer and growing polymer chains phase separate from the electrolyte phase during photopolymerization to yield a methacrylate-rich silica/polymer phase and little or no polymer in the PEGDME-500 phase. Thus, the mechanical properties of the composite electrolyte and its ionic conductivity are decoupled and can be optimized independently.},
doi = {10.1021/cm9704894},
url = {https://www.osti.gov/biblio/316240}, journal = {Chemistry of Materials},
number = 11,
volume = 10,
place = {United States},
year = {1998},
month = {11}
}