Electrochemical polymerization of electroactive polyaniline in nonaqueous solution and its application in rechargeable lithium batteries

Tetsuya Osaka, Satoshi Ogano, Katsuhiko Naoi, Noboru Oyama

Research output: Contribution to journalArticle

116 Citations (Scopus)

Abstract

An electroactive polyaniline (PAn) was successfully prepared from nonaqueous propylene carbonate (PC) solution containing acid (CF3COOH) and electrolyte (LiClO4). PAn deposition and the doping-undoping process of deposited PAn film were investigated by consecutive cyclic voltammetry in various electropolymerization solutions. It is confirmed by infrared spectral measurement that there is no essential difference in the manner of bonding between the electroactive PAn films deposited from aqueous and PC solutions. Inspection by scanning electron microscope revealed that PAn films deposited from aqueous HClO4 solution had a fibrous structure, whereas the PAn films deposited from PC solution had a porous surface which resembled polypyrrole films. The shape of the electro-oxidation curve is found to be essentially different, depending on the solvent or the pKa value of acid in an electropolymerization solution. An electroactive PAn film deposited from PC solution was applied to an effective cathode material of a rechargeable lithium battery (Li/LiClO4-PC/PAn). The Li/LiClO4-PC/PAn (deposited from PC solution) battery showed a high coulombic efficiency and high-energy density in charging-discharging behavior. The electroactivity of PAn film deposited from PC solution was found to be as high as, or higher than, that of PAn film deposited from aqueous solution.

Original languageEnglish
Pages (from-to)306-309
Number of pages4
JournalJournal of the Electrochemical Society
Volume136
Issue number2
Publication statusPublished - 1989 Feb

Fingerprint

Electropolymerization
Lithium batteries
lithium batteries
Polyaniline
propylene
carbonates
polymerization
Propylene
Carbonates
aqueous solutions
acids
polyaniline
polypyrroles
charging
electric batteries
Acids
inspection
propylene carbonate
Electrooxidation
Polypyrroles

ASJC Scopus subject areas

  • Electrochemistry
  • Surfaces, Coatings and Films
  • Surfaces and Interfaces

Cite this

Electrochemical polymerization of electroactive polyaniline in nonaqueous solution and its application in rechargeable lithium batteries. / Osaka, Tetsuya; Ogano, Satoshi; Naoi, Katsuhiko; Oyama, Noboru.

In: Journal of the Electrochemical Society, Vol. 136, No. 2, 02.1989, p. 306-309.

Research output: Contribution to journalArticle

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