Premium
Gel‐type solid polymer electrolytes for rechargeable film batteries
Author(s) -
Kabata Toshiyuki,
Fujii Toshishige,
Kimura Okitoshi,
Ohsawa Toshiyuki,
Samura Tetsuya,
Matsuda Yoshiharu,
Watanabe Masayoshi
Publication year - 1993
Publication title -
polymers for advanced technologies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.61
H-Index - 90
eISSN - 1099-1581
pISSN - 1042-7147
DOI - 10.1002/pat.1993.220040222
Subject(s) - polyaniline , electrolyte , materials science , dimethoxyethane , propylene carbonate , ionic conductivity , monomer , photopolymer , polymer , conductive polymer , ionic bonding , conductivity , solvent , polymer chemistry , chemical engineering , chemistry , organic chemistry , polymerization , electrode , composite material , ion , engineering
Gel‐type solid polymer electrolytes (SPE) which consisted of LiBF 4 as the electrolyte, a mixture of propylene carbonate and 1,2‐dimethoxyethane as the solvents, and a mixture of ethoxypolyoxyethyleneacrylate and trimethylolpropanetriacrylate as the monomers, were prepared by photopolymerization. The composition range for the gelation and the SPE formation was defined. Relationships between the composition of the SPE, and the ionic conductivity and modulus were clarified. The ionic conductivity of the SPE film, the composition of which was 13 wt% monomer, 20 wt% LiBF 4 and 67 wt% solvent, was 2.7 × 10 ‐3 S/cm, and the modulus was 10 3 dyn/cm 2 at 25°C. When a polyaniline(PANI)/SPE interface was formed on polyaniline films by photopolymerization at the optimal composition, the redox behavior of PANI was almost equivalent to that in nonaqueous electrolyte solutions. The discharge capacity of a Li/SPE/PANI film rechargeable battery was 116 mAh/g‐PANI (based on the weight of PANI), almost the same as that of a Li/nonaqueous electrolyte solution/PANI cell.