Dependence of film thickness on electrochemical kinetics of polypyrrole and on properties of lithium/polypyrrole battery

Journal Article · Tue Sep 01 00:00:00 EDT 1987 · J. Electrochem. Soc.; (United States)

DOI:https://doi.org/10.1149/1.2100831· OSTI ID:5687774

Osaka, T; Naoi, K; Ogano, S; Nakamura, S

The charging-discharging behavior of lithium/LiClO/sub 4//polypyrrole battery was found to show a different dependence on the thickness of a polypyrrole film cathode prepared at various polymerization potentials. Lithium batteries constructed with a polypyrrole cathode formed at a higher potential show better charging-discharging performance characteristics than those with a film prepared at a lower potential. The electrode kinetics of electrochemically prepared polypyrrole were investigated in an attempt to clarify the interesting dependence of the behavior of Li/polypyrrole battery on the thickness of polypyrrole cathode as a function of formation potential. A potential step chronoamperometry, together with an ac impedance measurement, has evidenced that there is a strong relationship between the doping charges and the apparent diffusion coefficients of polypyrrole electrodes. In practice, the battery performance of Li/LiClO/sub 4//polypyrrole cells was examined by varying the current density. The upper limit of the current density at which the coulombic yield in the charging-discharging curves remains at 100% was found for both thin and thick films of 1 and 5 C cm/sup -2/ film formation charges.

• Research Organization: Dept. of Applied Chemistry, Waseda Univ., 3-4-1, Okubo, Shinjuku-ku, Tokyo 160
• OSTI ID: 5687774
• Journal Information: J. Electrochem. Soc.; (United States), Journal Name: J. Electrochem. Soc.; (United States) Vol. 134:9; ISSN JESOA
• Country of Publication: United States
• Language: English

Related Subjects

25 ENERGY STORAGE
250903* -- Energy Storage-- Batteries-- Materials
Components
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37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400400 -- Electrochemistry
ALKALI METAL COMPOUNDS
ALKALI METALS
AZOLES
CATHODES
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
CHEMISTRY
CHLORIDES
CHLORINE COMPOUNDS
COULOMB FIELD
CURRENT DENSITY
DIFFUSION
ELECTRIC BATTERIES
ELECTRIC FIELDS
ELECTRIC IMPEDANCE
ELECTROCHEMICAL CELLS
ELECTROCHEMISTRY
ELECTRODES
ELEMENTS
FILMS
HALIDES
HALOGEN COMPOUNDS
HETEROCYCLIC COMPOUNDS
IMPEDANCE
KINETICS
LITHIUM
LITHIUM CHLORIDES
LITHIUM COMPOUNDS
LITHIUM HALIDES
METAL-NONMETAL BATTERIES
METALS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
POLYMERIZATION
POLYMERS
PYRROLES
REACTION KINETICS