Patent ID: 8361652
Filing Date: 2013-01-29
Classification: H01M,Y02E,Y02P,Y10T

Abstract:
1. A chemical source of electrical energy comprising: a positive electrode made of an electrically conductive material and substantially free of intrinsic sulfur-containing components; a permeable separator or membrane; a negative electrode comprising a material selected from the group consisting of an electrically conductive material and a material that is able reversibly to intercalate lithium ions, the negative electrode being substantially free of intrinsic lithium, lithium alloys and materials containing lithium ions; and a mixture of lithium sulfide and sulfur in an aprotic electrolyte comprising at least one lithium salt in at least one solvent disposed between the electrodes; wherein the electrodes, permeable separator and electrolyte are contained within a cell and upon application of a charge to the cell, the positive electrode incorporates sulfide ions from the mixture and the negative electrode incorporates lithium ions from the electrolyte.