Electrochemical Polymerization of Electroactive Polyaniline in Nonaqueous Solution and Its Application in Rechargeable Lithium Batteries

Tetsuya Osaka, Satoshi Ogano, Katsuhiko Naoi

Research output: Contribution to journalArticle

116 Citations (Scopus)

Abstract

An electroactive polyaniline (PAn) was successfully prepared from nonaqueous propylene carbonate (PC) solution containing acid (CF3 COOH) and electrolyte (LiC104). 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 HC104 solution had a fibrous structure, whereas the PAn film 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/LiC104-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
DOIs
Publication statusPublished - 1989 Feb

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Renewable Energy, Sustainability and the Environment
  • Surfaces, Coatings and Films
  • Electrochemistry
  • Materials Chemistry

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