Lithium-aluminum-magnesium electrode composition

Patent · 31 December 1977

OSTI ID:863242

Melendres, Carlos A ^[1]; Siegel, Stanley ^[2]

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1. Bolingbrook, IL
2. Downers Grove, IL

A negative electrode composition is presented for use in a secondary, high-temperature electrochemical cell. The cell also includes a molten salt electrolyte of alkali metal halides or alkaline earth metal halides and a positive electrode including 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 and a magnesium-aluminum alloy as a structural matrix. Various binary and ternary intermetallic phases of lithium, magnesium, and aluminum are formed but the electrode composition in both its charged and discharged state remains substantially free of the alpha lithium-aluminum phase and exhibits good structural integrity.

• Research Organization: Argonne National Laboratory (ANL), Argonne, IL
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 4130500
• OSTI ID: 863242
• Country of Publication: United States
• Language: English

Related Subjects

/252/420/429/
50
active
active electrode
alkali
alkali metal
alkaline
alkaline earth
alloy
alpha
aluminum
aluminum alloy
atom
atom percent
binary
cell
chalcogen
chalcogenide
charged
composition
constituent
discharged
earth
earth metal
electrochemical
electrochemical cell
electrode
electrode composition
electrode including
electrode material
electrolyte
exhibits
formed
free
halides
high-temperature
high-temperature electrochemical
including
integrity
intermetallic
intermetallic phase
intermetallic phases
lithium
lithium-aluminum
lithium-aluminum-magnesium
magnesium
magnesium-aluminum
material
matrix
metal
metal chalcogenide
metal halide
metal halides
metallic phase
molten
molten salt
negative
negative electrode
percent
phase
phases
positive
positive electrode
remains
remains substantially
salt
salt electrolyte
secondary
structural
structural integrity
substantially
substantially free
temperature electrochemical
ternary
ternary intermetallic
various