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Title: Effect of PF/sub 6//sup -/ anion on the properties of lithium-polypyrrole battery during polypyrrole film formation

Abstract

A high charging-discharging efficiency was obtained for Li/LiClO/sub 4/-PC (propylene carbonate)/PPy (polypyrrole) battery, when a PPy film formed in LiPF/sub 6//PC by electropolymerization was used in a LiClO/sub 4/ electrolyte after PF/sub 6/- anion undoping. The anion doping-undoping process for the PPy film electrodes was examined with the usual electrochemical techniques. A Li/LiClO/sub 4//PPy cell was also tested with a constant current charging-discharging performance. The relationship between sweep rate and anodic peak current shown in the cyclic voltammograms obtained for the PPy film formed in the LiClO/sub 4/ electrolyte indicates a typical diffusion-controlled process, while a reaction-controlled process was found to be involved in the PPy film electrode formed in the LiPF/sub 6/ electrolyte. The relationship between undoping level and elapsed time indicated that the diffusion rate of the ClO/sub 4/-doped in the PPy film formed in LiPF/sub 6/ has a higher value than that of the ClO/sub 4/-doped in the PPy film formed in LiClO/sub 4/. SEM observations showed that the PPy films formed in LiPF/sub 6/ were rougher than those formed in LiClO/sub 4/. Infrared (IR) spectral measurements confirmed that there are no essential differences in the manner of bonding of the PPy films formed in LiPF/sub 6/(PPy/supmore » +/PF/sub 6//sup -/) and LiClO/sub 4/(PPy/sup +/ClO/sub 4/-). Consequently, a morphology of the PPy films was suggested to be a very important factor in determining the kinetics of the anion doping-undoping process and, therefore, charging-discharging properties of Li/LiClO/sub 4/-PC/PPy battery.« less

Authors:
; ; ;
Publication Date:
Research Org.:
Dept. of Applied Chemistry, School of Science and Engineering, Waseda Univ., Okubo, Shinjuku-ku, Tokyo 160
OSTI Identifier:
6875704
Resource Type:
Journal Article
Journal Name:
J. Electrochem. Soc.; (United States)
Additional Journal Information:
Journal Volume: 134:2
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE; METAL-NONMETAL BATTERIES; ELECTRODES; ELECTROLYTES; FABRICATION; PHOSPHORUS FLUORIDES; ELECTRICAL PROPERTIES; ELECTROCHEMISTRY; PROPYLENE; PYRROLES; ANIONS; CARBONATES; CHEMICAL PREPARATION; CHEMICAL REACTION KINETICS; CHLORINE OXIDES; COMPARATIVE EVALUATIONS; CRYSTAL GROWTH; DOPED MATERIALS; ELECTRIC CHARGES; ELECTRIC DISCHARGES; INFRARED SPECTRA; LITHIUM; LITHIUM COMPLEXES; MORPHOLOGY; POLYMERS; THIN FILMS; ALKALI METALS; ALKENES; AZOLES; CARBON COMPOUNDS; CHALCOGENIDES; CHARGED PARTICLES; CHEMISTRY; CHLORINE COMPOUNDS; COMPLEXES; ELECTRIC BATTERIES; ELECTROCHEMICAL CELLS; ELEMENTS; FILMS; FLUORIDES; FLUORINE COMPOUNDS; HALIDES; HALOGEN COMPOUNDS; HETEROCYCLIC COMPOUNDS; HYDROCARBONS; IONS; KINETICS; MATERIALS; METALS; ORGANIC COMPOUNDS; ORGANIC NITROGEN COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; PHOSPHORUS COMPOUNDS; PHYSICAL PROPERTIES; REACTION KINETICS; SPECTRA; SYNTHESIS; 250903* - Energy Storage- Batteries- Materials, Components, & Auxiliaries

Citation Formats

Osaka, T, Naoi, K, Sakai, H, and Ogano, S. Effect of PF/sub 6//sup -/ anion on the properties of lithium-polypyrrole battery during polypyrrole film formation. United States: N. p., 1987. Web. doi:10.1149/1.2100447.
Osaka, T, Naoi, K, Sakai, H, & Ogano, S. Effect of PF/sub 6//sup -/ anion on the properties of lithium-polypyrrole battery during polypyrrole film formation. United States. doi:10.1149/1.2100447.
Osaka, T, Naoi, K, Sakai, H, and Ogano, S. Sun . "Effect of PF/sub 6//sup -/ anion on the properties of lithium-polypyrrole battery during polypyrrole film formation". United States. doi:10.1149/1.2100447.
@article{osti_6875704,
title = {Effect of PF/sub 6//sup -/ anion on the properties of lithium-polypyrrole battery during polypyrrole film formation},
author = {Osaka, T and Naoi, K and Sakai, H and Ogano, S},
abstractNote = {A high charging-discharging efficiency was obtained for Li/LiClO/sub 4/-PC (propylene carbonate)/PPy (polypyrrole) battery, when a PPy film formed in LiPF/sub 6//PC by electropolymerization was used in a LiClO/sub 4/ electrolyte after PF/sub 6/- anion undoping. The anion doping-undoping process for the PPy film electrodes was examined with the usual electrochemical techniques. A Li/LiClO/sub 4//PPy cell was also tested with a constant current charging-discharging performance. The relationship between sweep rate and anodic peak current shown in the cyclic voltammograms obtained for the PPy film formed in the LiClO/sub 4/ electrolyte indicates a typical diffusion-controlled process, while a reaction-controlled process was found to be involved in the PPy film electrode formed in the LiPF/sub 6/ electrolyte. The relationship between undoping level and elapsed time indicated that the diffusion rate of the ClO/sub 4/-doped in the PPy film formed in LiPF/sub 6/ has a higher value than that of the ClO/sub 4/-doped in the PPy film formed in LiClO/sub 4/. SEM observations showed that the PPy films formed in LiPF/sub 6/ were rougher than those formed in LiClO/sub 4/. Infrared (IR) spectral measurements confirmed that there are no essential differences in the manner of bonding of the PPy films formed in LiPF/sub 6/(PPy/sup +/PF/sub 6//sup -/) and LiClO/sub 4/(PPy/sup +/ClO/sub 4/-). Consequently, a morphology of the PPy films was suggested to be a very important factor in determining the kinetics of the anion doping-undoping process and, therefore, charging-discharging properties of Li/LiClO/sub 4/-PC/PPy battery.},
doi = {10.1149/1.2100447},
journal = {J. Electrochem. Soc.; (United States)},
number = ,
volume = 134:2,
place = {United States},
year = {1987},
month = {2}
}