ISSN:
1042-7147
Keywords:
Polymer electrolytes
;
lonic conductivity
;
Organogels
;
Photopolymerization
;
Polyaniline
;
Rechargeable battery
;
Chemistry
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
,
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Gel-type solid polymer electrolytes (SPE) which consisted of LiBF4 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% LiBF4 and 67 wt% solvent, was 2.7 × 10-3 S/cm, and the modulus was 103 dyn/cm2 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.
Additional Material:
7 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/pat.1993.220040222
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