Polyaniline secondary cells with ambient temperature molten salt electrolytes

Journal Article · Mon Mar 01 00:00:00 EST 1993 · Journal of the Electrochemical Society; (United States)

DOI:https://doi.org/10.1149/1.2056128· OSTI ID:6550476

Koura, Nobuyuki; Ejiri, Hirokazu; Takeishi, Kazuyuki ^[1]

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1. Tokyo Univ. of Science (Japan)

An Al/polyaniline (PAn) powder secondary cell with an AlCl[sub 3]-1-butylpyridinium chloride (BPC) or an AlCl[sub 3]-1-ethyl-3-methylimidazolium chloride (EMIC) electrolyte has been investigated. The configuration of the Al/PAn secondary cell with an acidic AlCl[sub 3]-EMIC electrolyte was: open-circuit voltage (OCV) = 1.7 V, discharge capacity = 42 Ah, charge/discharge efficiency = 90%. A 24% increase in the discharge capacity over a BPC system electrolyte is obtained. The difference was attributed to the electrolyte properties, i.e., conductivity and viscosity. In the basic EMIC system bath of 44.4 m/o AlCl[sub 3], the redox potential of PAn was less noble and the reaction current was large. A PAn/PAn secondary cell with the acidic AlCl[sub 3]-EMIC catholyte and the basic anolyte was proposed. The OCV showed 1.0 V and the PAn/PAn secondary cell was promising. A PAn prepared from a nonaqueous BPC system bath was more electrochemically active than that prepared from an aqueous bath. The optimum OCV, discharge capacity, and charge/discharge efficiency of the Al/PAn (from the BPC bath) were 1.6 V, 68 Ah/kg-PAn, and 99%, respectively.

• OSTI ID: 6550476
• Journal Information: Journal of the Electrochemical Society; (United States), Vol. 140:3; ISSN 0013-4651
• Country of Publication: United States
• Language: English

Related Subjects

25 ENERGY STORAGE
ELECTRIC BATTERIES
ELECTROLYTES
ALUMINIUM CHLORIDES
ANILINE
EFFICIENCY
ELECTRIC CONDUCTIVITY
ELECTROCHEMISTRY
MOLTEN SALTS
ORGANIC COMPOUNDS
PERFORMANCE
VISCOSITY
ALUMINIUM COMPOUNDS
AMINES
AROMATICS
CHEMISTRY
CHLORIDES
CHLORINE COMPOUNDS
ELECTRICAL PROPERTIES
ELECTROCHEMICAL CELLS
HALIDES
HALOGEN COMPOUNDS
PHYSICAL PROPERTIES
SALTS
250903* - Energy Storage- Batteries- Materials
Components
& Auxiliaries