Mo/sub 6/Se/sub 6/: A new solid-state electrode for secondary lithium batteries

Journal Article · Sun Sep 01 00:00:00 EDT 1985 · J. Electrochem. Soc.; (United States)

DOI:https://doi.org/10.1149/1.2114297· OSTI ID:5118807

Tarascon, J M

The practical utilization of nonaqueous secondary lithium cells has never been realized, mainly because of electrode problems such as the absence of suitable cathode materials or dendritic regrowth of the lithium on the anode short circuiting the cell. Over the last few years, the cathode problem has been overcome by the discovery of new materials such as TiS/sub 2/, NbSe/sub 3/, V/sub 6/O/sub 13/, etc. The crystallographic structural feature that makes these compounds attractive for batteries is that they can act as ''hosts,'' incorporating lithium atoms between the layers (TiS/sub 2/), chains (NbSe/sub 3/), or into the channels (V/sub 6/O/sub 13/) without a irreversible change in crystal structure. However, in spite of intensive research, the anode problem still remains. We have undertaken research in this direction. Initial results of this early work are the subject of this paper. This study reports a new solid-state electrode material (Mo/sub 6/Se/sub 6/) which can be used both as cathode and anode in secondary lithium cells. Mo/sub 6/Se/sub 6/ can take up reversibly nine lithium atoms per Mo/sub 6/Se/sub 6/ without losing its linear chain structure, leading to a theoretical volume energy density of about 1.1 Wh/cm/sup 3/, compared to 1.2 for TiS/sub 2/ cathodes. Another important promising possibility which arises from this work is the use of the lithiated compounds LiMo/sub 6/Se/sub 6/ as the anode instead of lithium metal in secondary lithium cells.

• Research Organization: Bell Communications Research, Murray Hill, New Jersey
• OSTI ID: 5118807
• Journal Information: J. Electrochem. Soc.; (United States), Vol. 132:9
• Country of Publication: United States
• Language: English

Related Subjects

25 ENERGY STORAGE
METAL-NONMETAL BATTERIES
ANODES
CATHODES
MOLYBDENUM SELENIDES
CRYSTALLOGRAPHY
ELECTRICAL PROPERTIES
CHEMICAL COMPOSITION
ELECTRICAL FAULTS
LITHIUM SELENIDES
NIOBIUM SELENIDES
SOLID STATE PHYSICS
TITANIUM SULFIDES
VANADIUM OXIDES
ALKALI METAL COMPOUNDS
CHALCOGENIDES
ELECTRIC BATTERIES
ELECTROCHEMICAL CELLS
ELECTRODES
LITHIUM COMPOUNDS
MOLYBDENUM COMPOUNDS
NIOBIUM COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
PHYSICS
REFRACTORY METAL COMPOUNDS
SELENIDES
SELENIUM COMPOUNDS
SULFIDES
SULFUR COMPOUNDS
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
VANADIUM COMPOUNDS
250901* - Energy Storage- Batteries- Design & Development
250903 - Energy Storage- Batteries- Materials
Components
& Auxiliaries