Liquid electrolyte lithium-sulfur batteries
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United States of America Patent
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Mar 19, 2002
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N/A
app pub date -
Feb 1, 2000
filing date -
Nov 23, 1994
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Abstract
A high performance lithium-sulfur battery cell includes the following features: (a) a negative electrode including a metal or an ion of the metal; (b) a positive electrode comprising an electronically conductive material; and (c) a liquid catholyte including a solvent and dissolve electrochemically active material comprising sulfur in the form of at least one of a sulfide of the metal and a polysulfide of the metal. Such battery cells are characterized by an energy density, calculated based upon a laminate weight, of at least about 400 Watt-hours/kilogram when discharged at a rate of at least 0.1 mA/cm.sup.2. Cells meeting these criteria often find use as primary cells.
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