Patent ID: 6030720
Filing Date: 2000-02-29
Classification: C07C,H01M,Y02E

Abstract:
A battery cell comprising:a) a negative electrode including a metal or an ion of the metal;b) a positive electrode comprising a mixture ofi) an electrochemically active material comprising sulfur in the form of at least one of elemental sulfur, a sulfide of the metal, and a polysulfide of the metal, andii) an electronically conductive material; andc) a liquid electrolyte including ai) main solvent having the chemical formula R.sub.1 (CH.sub.2 CH.sub.2 O).sub.n R.sub.2, where n ranges between 2 and 10, R.sub.1 and R.sub.2 are different or identical groups selected from the group consisting of alkyl, alkoxy, substituted alkyl, and substituted alkoxy groups; andii) a cosolvent having a donor number of at least about 15.