Application of electrochemically formed polyazulene to rechargeable lithium battery
An electrochemically formed polyazulene(PAz), one of the electroconductive polycyclic hydrocarbons, was studied for its electrochemical properties in order to examine the possibility of utilizing it as a cathode active material of rechargeable lithium battery. The electrode kinetics of PAz film electrode, especially the anion doping-undoping process, were investigated mainly with cyclic voltammetry and FFT impedance method. The cyclic voltammetric results of PAz film showed a highly reversible redox process. Cole-Cole plots for PAz electrode obtained by impedance measurements as a function of doping potential were also found to offer an indication that PAz can be an excellent battery material. The charging-discharging property, and the cyclability of a Li/LiClO/sub 4/-PC(propylene carbonate)/PAz battery were then studied as a function of the film thickness of PAz cathode. The charging-discharging behavior of Li/LiClO/sub 4/-PC/PAz was also compared with those of Li/LiClO/sub 4/--PC/polypyrrole and Li/LiClO/sub 4/-PC/polyaniline batteries, which had been examined earlier. When compared with Li/LiClO/sub 4/-PC/polypyrrole or Li/LiClO/sub 4/-PC/polyaniline batteries, a Li/LiClO/sub 4//PAz battery showed fully-high and constant discharge voltage (ca. 3.2V), while keeping 100% of coulombic yield. Inspection by SEM showed that the surface condition of PAz film greatly resembled that of polypyrrole, however, a 10 C cm/sup -2/ PAz film was prepared with thicker than polypyrrole formed with the same amount of charge of 10 C cm/sup -2/.
- Research Organization:
- Dept. of Applied Chemistry, School of Science and Engineering, Waseda Univ., Shinjuku-ku, Tokyo 160 (JP)
- OSTI ID:
- 7226265
- Journal Information:
- J. Electrochem. Soc.; (United States), Vol. 134:11
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
AZULENE
CHEMICAL PROPERTIES
ELECTRICAL PROPERTIES
METAL-NONMETAL BATTERIES
CATHODES
ANILINE
CHEMICAL REACTION KINETICS
CRYSTAL DOPING
ELECTROCHEMISTRY
FOURIER TRANSFORMATION
LITHIUM
LITHIUM CHLORIDES
PROPYLENE
PYRROLES
REDOX REACTIONS
VOLTAMETRY
ALKALI METAL COMPOUNDS
ALKALI METALS
ALKENES
AMINES
AROMATICS
AZOLES
CHEMICAL REACTIONS
CHEMISTRY
CHLORIDES
CHLORINE COMPOUNDS
ELECTRIC BATTERIES
ELECTROCHEMICAL CELLS
ELECTRODES
ELEMENTS
HALIDES
HALOGEN COMPOUNDS
HETEROCYCLIC COMPOUNDS
HYDROCARBONS
INTEGRAL TRANSFORMATIONS
KINETICS
LITHIUM COMPOUNDS
LITHIUM HALIDES
METALS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
PHYSICAL PROPERTIES
REACTION KINETICS
TRANSFORMATIONS
250903* - Energy Storage- Batteries- Materials
Components
& Auxiliaries
400201 - Chemical & Physicochemical Properties