Electrolytic LiCl precipitation from LiCl-KCl melt in porous Li-Al anodes
Composition gradients such as those predicted to occur during discharge of porous Li-Al negative electrodes of Li/S batteries with LiCl-KCl eutectic electrolyte were generated and measured in the LiCl-KCl anolyte of an electrolysis cell with Li-Al electrodes. Precipitation of lithium chloride during electrolysis was observed by two-dimensional scanning of electrolyte composition in the front part of quenched porous Li-Al anode sections using SEM/EDX. The distribution of sites of increased or decreased LiCl concentration, LiCl saturation and precipitation was mapped. Cathodic regions were observed near the cell walls. Preliminary results of analysis by Auger spectroscopy confirm LiCl precipitation in the porous anode. 16 references, 7 figures, 1 table.
- Research Organization:
- Oak Ridge National Lab., TN
- DOE Contract Number:
- W-7405-ENG-26
- OSTI ID:
- 6122761
- Journal Information:
- J. Electrochem. Soc.; (United States), Journal Name: J. Electrochem. Soc.; (United States) Vol. 130:12; ISSN JESOA
- Country of Publication:
- United States
- Language:
- English
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Composition gradients in electrolyzed LiCl-KCl melts
Composition gradients in electrolyzed LiCl-KCL eutectic melts
Related Subjects
250902* -- Energy Storage-- Batteries-- Performance & Testing
250903 -- Energy Storage-- Batteries-- Materials
Components
& Auxiliaries
ALKALI METAL COMPOUNDS
ANODES
AUGER ELECTRON SPECTROSCOPY
CHEMICAL COMPOSITION
CHEMISTRY
CHLORIDES
CHLORINE COMPOUNDS
DATA
ELECTRIC BATTERIES
ELECTROCHEMICAL CELLS
ELECTROCHEMISTRY
ELECTRODES
ELECTROLYTES
ELECTRON MICROSCOPY
ELECTRON SPECTROSCOPY
EXPERIMENTAL DATA
HALIDES
HALOGEN COMPOUNDS
INFORMATION
LITHIUM CHLORIDES
LITHIUM COMPOUNDS
LITHIUM HALIDES
LITHIUM-SULFUR BATTERIES
METAL-NONMETAL BATTERIES
MICROSCOPY
MOLTEN SALTS
NUMERICAL DATA
POTASSIUM CHLORIDES
POTASSIUM COMPOUNDS
PRECIPITATION
QUANTITY RATIO
SALTS
SATURATION
SCANNING ELECTRON MICROSCOPY
SEPARATION PROCESSES
SPECTROSCOPY