Electroactive polyaniline film deposited from nonaqueous media; Effect of mixed organic solvent on polyaniline deposition and its battery performance
- Dept. of Applied Chemistry, School of Science and Engineering, Waseda Univ., 3-4-1 Okubo, Shinjuku-ku, Tokyo 169 (JP)
This paper reports on electroactive polyaniline (PAn) films which were deposited from PC (propylene carbonate)-Ec (thylene carbonate) and PC-DME (1, 2-dimethoxyethane) mixed polymerization solutions containing aniline, CF{sub 3}COOH, and LiClO{sub 4}. Higher dielectric constant solvents are necessary to deposit the PAn film where protons, dissociated from the acid, initiate the polymerization of aniline. Various PAn films deposited in the PC, the PC-EC (50 mole percent), and the PC-DME (50 volume percent) solutions were used for the cathode materials of the rechargeable lithium batteries. Charge capacity and discharge ability of the Li/PAn batteries in the PC-LiClO{sub 4} electrolyte solution are almost the same, regardless of the polymerization solvents such as PC {approx} PC-EC {ge} PC-DME and PC-EC {ge} PC-DME {approx} PC. The mixed solvent electrolyte solution effect on the Li/PAn (polymerized in the PC solution) batteries becomes much larger such as PC-DME {gt} PC-EC {gt} PC. Moreover, the electrochemical kinetic factors of the PAn films deposited in the various mixed polymerization solutions and also in the different electrolytes were experimentally determined by measuring the ac impedance. The results of the ac impedance analysis of each PAn film correlate well with the battery performances of Li/PAn cells.
- OSTI ID:
- 5208394
- Journal Information:
- Journal of the Electrochemical Society; (United States), Journal Name: Journal of the Electrochemical Society; (United States) Vol. 138:10; ISSN JESOA; ISSN 0013-4651
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
250902 -- Energy Storage-- Batteries-- Performance & Testing
250903* -- Energy Storage-- Batteries-- Materials
Components
& Auxiliaries
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400400 -- Electrochemistry
ALKALI METALS
ALKENES
AMINES
ANILINE
AROMATICS
CAPACITY
CATHODES
CHEMICAL REACTIONS
CHEMISTRY
ELECTRIC BATTERIES
ELECTRIC IMPEDANCE
ELECTROCHEMICAL CELLS
ELECTROCHEMISTRY
ELECTRODES
ELEMENTS
ETHYLENE
FILMS
HYDROCARBONS
IMPEDANCE
LITHIUM
MATERIALS TESTING
METALS
ORGANIC COMPOUNDS
PERFORMANCE TESTING
POLYMERIZATION
PROPYLENE
TESTING
THIN FILMS