Lithium-aluminum-iron electrode composition

Patent · Tue Jun 19 04:00:00 EDT 1979

OSTI ID:5980723

Kaun, T D

A negative electrode composition is presented for use in a secondary electrochemical cell. The cell also includes an elctrolyte with lithium ions, such as a molten salt of alkali metal halides or alkaline earth metal halides, that can be used in high-temperature cells. The positive electrode contains a chalcogen or a metal chalcogenide as the active electrode material. The negative electrode composition includes up to 50 atom percent lithium as the active electrode constituent in an alloy of aluminum-iron. Various binary and ternary intermetallic phases of lithium, aluminum, and iron are formed. The lithium within the intermetallic phase of Al/sub 5/Fe/sub 2/ exhibits increased activity over that of lithium within a lithium-aluminum alloy to provide an increased cell potential of up to about 0.25 volt.

• Assignee: Dept. of Energy
• Patent Number(s): US 4158720
• OSTI ID: 5980723
• Country of Publication: United States
• Language: English

Related Subjects

25 ENERGY STORAGE
250903* -- Energy Storage-- Batteries-- Materials
Components
& Auxiliaries
36 MATERIALS SCIENCE
360101 -- Metals & Alloys-- Preparation & Fabrication
ALKALI METAL COMPOUNDS
ALLOY SYSTEMS
ALLOYS
ALUMINIUM ALLOYS
ANODES
BROMIDES
BROMINE COMPOUNDS
CHALCOGENIDES
CHLORIDES
CHLORINE COMPOUNDS
COPPER COMPOUNDS
COPPER SULFIDES
ELECTRIC BATTERIES
ELECTROCHEMICAL CELLS
ELECTRODES
ELECTROMOTIVE FORCE
ENERGY STORAGE SYSTEMS
FABRICATION
FLUORIDES
FLUORINE COMPOUNDS
HALIDES
HALOGEN COMPOUNDS
HIGH TEMPERATURE
INTERMETALLIC COMPOUNDS
IRON ALLOYS
IRON COMPOUNDS
IRON SULFIDES
LITHIUM ALLOYS
LITHIUM CHLORIDES
LITHIUM COMPOUNDS
LITHIUM FLUORIDES
LITHIUM HALIDES
LITHIUM-SULFUR BATTERIES
METAL-NONMETAL BATTERIES
POTASSIUM BROMIDES
POTASSIUM CHLORIDES
POTASSIUM COMPOUNDS
SULFIDES
SULFUR COMPOUNDS
TERNARY ALLOY SYSTEMS
TRANSITION ELEMENT COMPOUNDS