Two-dimensional triangular lattice and its application to lithium-intercalated layered compounds
Technical Report
·
OSTI ID:6808969
Good rechargeable batteries are being searched for use in electric vehicles and in energy storage during off-peak consumption periods and from solar sources. The interest in lithium intercalation compounds has been recently enhanced by the search for such batteries. The process of intercalation of lithium in several transition-metal dichalcogenides can provide an emf of several volts. The progress achieved in the last decade in the investigation of these intercalates has been facilitated by the availability of the dichalcogenides as single crystals and by their chemical stability. The transition-metal dichalcogenides and their Li-intercalates are studied, with emphasis on the Li/sub x/Ta/sub y/Ti/sub l-y/S/sub 2/ series. The interactions between the Li atoms and the applicability of a lattice gas model to the problem of ordering of these atoms is discussed. A formulation is presented of the cluster-variation approximation to the lattice gas problem. The single-site and the nearest-neighbor triangle basic clusters are considered as models for Li/sub x/TiS/sub 2/. Also a theory is presented for the effects of a random distribution of different species of host atoms, as in Ta/sub y/Ti/sub l-y/S/sub 2/. (WHK)
- Research Organization:
- Lawrence Berkeley Lab., CA (USA)
- DOE Contract Number:
- AC03-76SF00098
- OSTI ID:
- 6808969
- Report Number(s):
- LBL-14815; ON: DE82021788
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
25 ENERGY STORAGE
250903* -- Energy Storage-- Batteries-- Materials
Components
& Auxiliaries
36 MATERIALS SCIENCE
360602 -- Other Materials-- Structure & Phase Studies
360603 -- Materials-- Properties
ALKALI METAL COMPOUNDS
CAPACITY
CATHODES
CHALCOGENIDES
CLATHRATES
CRYSTAL DEFECTS
CRYSTAL MODELS
CRYSTAL STRUCTURE
DIAGRAMS
ELECTRIC BATTERIES
ELECTROCHEMICAL CELLS
ELECTRODES
ENTROPY
INTERSTITIALS
LITHIUM COMPOUNDS
LITHIUM SULFIDES
LITHIUM-SULFUR BATTERIES
MATHEMATICAL MODELS
METAL-NONMETAL BATTERIES
ORDER-DISORDER TRANSFORMATIONS
PHASE DIAGRAMS
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
POINT DEFECTS
SULFIDES
SULFUR COMPOUNDS
TANTALUM COMPOUNDS
TANTALUM SULFIDES
THERMODYNAMIC PROPERTIES
TITANIUM COMPOUNDS
TITANIUM SULFIDES
TRANSITION ELEMENT COMPOUNDS
250903* -- Energy Storage-- Batteries-- Materials
Components
& Auxiliaries
36 MATERIALS SCIENCE
360602 -- Other Materials-- Structure & Phase Studies
360603 -- Materials-- Properties
ALKALI METAL COMPOUNDS
CAPACITY
CATHODES
CHALCOGENIDES
CLATHRATES
CRYSTAL DEFECTS
CRYSTAL MODELS
CRYSTAL STRUCTURE
DIAGRAMS
ELECTRIC BATTERIES
ELECTROCHEMICAL CELLS
ELECTRODES
ENTROPY
INTERSTITIALS
LITHIUM COMPOUNDS
LITHIUM SULFIDES
LITHIUM-SULFUR BATTERIES
MATHEMATICAL MODELS
METAL-NONMETAL BATTERIES
ORDER-DISORDER TRANSFORMATIONS
PHASE DIAGRAMS
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
POINT DEFECTS
SULFIDES
SULFUR COMPOUNDS
TANTALUM COMPOUNDS
TANTALUM SULFIDES
THERMODYNAMIC PROPERTIES
TITANIUM COMPOUNDS
TITANIUM SULFIDES
TRANSITION ELEMENT COMPOUNDS