Mobility and ionic association of lithium and quaternary ammonium salts in propylene carbonate and [gamma]-butyrolactone

Journal Article · Thu Dec 01 04:00:00 EST 1994 · Journal of the Electrochemical Society; (United States)

DOI:https://doi.org/10.1149/1.2059336· OSTI ID:6604833

Ue, Makoto ^[1]

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1. Mitsubishi Petrochemical Co., Ltd., Ibaraki (Japan). Tsukuba Research Center

Propylene carbonate (PC) and [gamma]-butyrolactone (GBL) are important dipolar aprotic solvents used for nonaqueous electrolytes in high energy lithium batteries, aluminum electrolytic capacitors, and electrical double-layer capacitors. The conductivities of lithium and quaternary ammonium salts have been measured in propylene carbonate and [gamma]-butyrolactone at 25 C over the concentration range of 10[sup [minus]2] to 10[sup [minus]3] mol dm[sup [minus]3]. The limiting molar conductivities and the ionic association constants were calculated by the expanded Fuoss-Hsia equation. The mobility of anions in both solvents decreased in the following order: BF[sub 4][sup [minus]] > ClO[sub 4][sup [minus]] > PF[sub 6][sup [minus]] > CF[sub 3]SO[sub 3][sup [minus]] > (CF[sub 3]SO[sub 2])[sub 2]N[sup [minus]] > C[sub 4]F[sub 9]SO[sub 3][sup [minus]] > BPh[sub 4][sup [minus]]. The association constants increased in the following order: Li(CF[sub 3]SO[sub 2])[sub 2]N, LiAsF[sub 6] < LiAsF[sub 6] < LiClO[sub 4] < LiBF[sub 4] < LiC[sub 4]F[sub 9]SO[sub 3] < LiCF[sub 3]SO[sub 3], while those of the corresponding tetraethylammonium salts were leveled by electrostatic shielding effect of alkyl groups. These results were correlated with ionic radii obtained by MM2 calculation.

• OSTI ID: 6604833
• Journal Information: Journal of the Electrochemical Society; (United States), Journal Name: Journal of the Electrochemical Society; (United States) Vol. 141:12; ISSN 0013-4651; ISSN JESOAN
• Country of Publication: United States
• Language: English

Related Subjects

25 ENERGY STORAGE
250903 -- Energy Storage-- Batteries-- Materials
Components
&amp; Auxiliaries
36 MATERIALS SCIENCE
360606 -- Other Materials-- Physical Properties-- (1992-)
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400400* -- Electrochemistry
ALKALI METAL COMPOUNDS
AMMONIUM COMPOUNDS
ARSENIC COMPOUNDS
ARSENIC FLUORIDES
BORON COMPOUNDS
BORON FLUORIDES
CARBON COMPOUNDS
CARBON FLUORIDES
CARBON NITRIDES
CHARGE CARRIERS
CHLORATES
CHLORINE COMPOUNDS
DATA
ELECTRIC BATTERIES
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTROCHEMICAL CELLS
ELECTROLYTES
EXPERIMENTAL DATA
FLUORIDES
FLUORINE COMPOUNDS
HALIDES
HALOGEN COMPOUNDS
INFORMATION
IONIC CONDUCTIVITY
LITHIUM COMPOUNDS
NITRIDES
NITROGEN COMPOUNDS
NONAQUEOUS SOLVENTS
NUMERICAL DATA
OXYGEN COMPOUNDS
PHOSPHORUS COMPOUNDS
PHOSPHORUS FLUORIDES
PHYSICAL PROPERTIES
PNICTIDES
SOLVENTS
SULFATES
SULFUR COMPOUNDS