Capacitive behavior in conducting polymers
- Univ. of Minnesota, Minneapolis (USA)
The over-all differential capacitance for conducting polymers like polypyrrole and polyvinylferrocene which show a very high redox capacity for the oxidation/reduction process was modeled as a function of applied voltage from the cyclic voltammetric data. The capacitance values are compared with various types of carbon double layer and conventional capacitor devices. Also, the theoretical capacitance values for a cell was estimated by assuming a hypothetical minimum equivalent cell consisting of an anode(Li), a cathode(polypyrrole) and a electrolyte solution (2 mol dm{sup {minus}3} LiClO{sub 4}(PC)) without any hardware. The charge/discharge process or doping/undoping process was determined by impedance analysis and the limiting capacitance was estimated. Also, an attempt was made to separate the faradaic and capacitive currents according to the theory of the impedance of diffusion in a layer of finite thickness.
- OSTI ID:
- 6333508
- Journal Information:
- Applied Physics Communications; (USA), Vol. 9:3; ISSN 0277-9374
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ORGANIC POLYMERS
ELECTRIC CONDUCTIVITY
CALCULATION METHODS
ELECTRICAL PROPERTIES
EXPERIMENTAL DATA
PYRROLES
VOLTAMETRY
AZOLES
DATA
HETEROCYCLIC COMPOUNDS
INFORMATION
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
PHYSICAL PROPERTIES
POLYMERS
360603* - Materials- Properties