An electrochemical study of the reactivity at the lithium electrolyte/bare lithium metal interface II. Unpurified solvents

Journal Article · Tue Jun 01 04:00:00 EDT 1993 · Journal of the Electrochemical Society; (United States)

DOI:https://doi.org/10.1149/1.2221600· OSTI ID:5983119

Odziemkowski, M; Irish, D E ^[1]

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1. Univ. of Waterloo, Ontario (Canada). Dept. of Chemistry

The in situ cutting method to expose bare lithium metal, the corrosion potential-time transients, and voltammetric measurements have been employed to study the behavior of lithium in various organic electrolyte environments. In situ optical and ex situ scanning electron microscopy techniques were used to examine the morphology of Li electrode surfaces, during exposure at open circuit and after anodic polarization. The following electrolytes have been investigated: LiAsF[sub 6], LiPF[sub 6], LiBF[sub 4], LiClO[sub 4], and Li(CF[sub 3]SO[sub 2])[sub 2]N in unpurified THF and PC. Small amounts of water shift the corrosion potential towards more positive values (compared to purified electrolytes). During intensive anodic cycling with LiAsF[sub 6]/THF the presence of water leads to the breakdown of a surface film and exposure to bare lithium metal.

• OSTI ID: 5983119
• Journal Information: Journal of the Electrochemical Society; (United States), Journal Name: Journal of the Electrochemical Society; (United States) Vol. 140:6; ISSN JESOAN; ISSN 0013-4651
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360105 -- Metals & Alloys-- Corrosion & Erosion
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400400* -- Electrochemistry
ALKALI METAL COMPOUNDS
ALKALI METALS
ARSENIC COMPOUNDS
ARSENIC FLUORIDES
BORIDES
BORON COMPOUNDS
CARBON COMPOUNDS
CARBONATES
CHEMICAL REACTIONS
CHEMISTRY
CHLORIDES
CHLORINE COMPOUNDS
CORROSION
DATA
ELECTROCHEMISTRY
ELECTROLYTES
ELECTRON MICROSCOPY
ELEMENTS
EXPERIMENTAL DATA
FLUORIDES
FLUORINE COMPOUNDS
FURANS
HALIDES
HALOGEN COMPOUNDS
HETEROCYCLIC COMPOUNDS
IMPURITIES
INFORMATION
INTERFACES
LITHIUM
LITHIUM BORIDES
LITHIUM CHLORIDES
LITHIUM COMPOUNDS
LITHIUM FLUORIDES
LITHIUM HALIDES
LITHIUM NITRIDES
LITHIUM PHOSPHIDES
METALS
MICROSCOPY
MORPHOLOGY
NITRIDES
NITROGEN COMPOUNDS
NUMERICAL DATA
OPTICAL MICROSCOPY
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
OXYGEN COMPOUNDS
PHOSPHIDES
PHOSPHORUS COMPOUNDS
PNICTIDES
POLARIZATION
SCANNING ELECTRON MICROSCOPY
SOLVENTS
TETRAHYDROFURAN
VOLTAMETRY