Electrochemical behavior of lithium in alkaline aqueous electrolytes. 1: Thermodynamics
- Pennsylvania State Univ., University Park, PA (United States). Dept. of Engineering Science and Mechanics
- SRI International, Menlo Park, CA (United States). Pure and Applied Physical Sciences Div.
Detailed potential/pH stability diagrams for the lithium-water system at 25 C have been derived as part of a program to describe the electrochemistry of the lithium anode in aqueous alkaline environments. The diagrams include lithium hydride as a stable solid phase at sufficiently negative potentials, and it is postulated that the passive film on Li in contact with concentrated alkaline solutions, under open-circuit conditions, comprises a LiH barrier layer covered with a hydrated LiOH outer layer. The postulated existence of Li{sub 2}O as a barrier layer, under open-circuit conditions, is inconsistent with the thermodynamic data for metallic lithium in contact with concentrated LiOH and LIOH + KOH solutions.
- OSTI ID:
- 345318
- Journal Information:
- Journal of the Electrochemical Society, Journal Name: Journal of the Electrochemical Society Journal Issue: 4 Vol. 146; ISSN JESOAN; ISSN 0013-4651
- Country of Publication:
- United States
- Language:
- English
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