Patent ID: 7026074
Filing Date: 2006-04-11
Classification: H01M,Y02E

Abstract:
1. A non-aqueous rechargeable lithium battery having a lithium insertion compound positive electrode, a negative electrode of one or more of lithium, lithium compound, and carbon, a solvent for a non-aqueous electrolyte containing a lithium salt and a blend of flame retardants and anode passivation additives, and gassing suppression additives, said flame retardant additive selected from one or more of aryl/alkyl phosphate, such as a triphenyl phosphate, (C 6 H 5 ) 3 PO 4 , a diphenyl monobutylphosphate, (DMP)C 4 H 9 (C 6 H 5 ) 2 PO 4 , and a phenyl alkyl phosphate, (C 6 H5)R 2 PO 4 , a cyclic ethyl carbonate, C 2 H 4 CO 3 , and derivatives thereof, where the 1 to 4 hydrogen groups are replaced with a C1–C6 alkane, a fluoridated C1–C6 alkane, an unsaturated alkane carbonate and a mixtures thereof, and said anode passivation additives being one or more of the following: vinyl ethylene carbonate, vinyl quinone, vinylcrotonate, 9-fluorenone, vinyl acetate, tribally triazine trione, 4,5-diethenyl-1,3-dioxolan-2-one, 4-ethenyl benzene-1,3-dioxolan-2-one, methyl silyl carbonate, 1,5-hexene-2,3-carbonate, 4-methyl-4-silyl-1,3-dioxolan-2-one, 4,5-diphenyl-1,3-dioxolan-2-one, 4,4-diphenyl-1,3-dioxolan-2-one, vinyl ethylene sulfite, 4-methoxymethyl-1,3-dioxolan-2-one, 4-hydroxymethyl-1,3-dioxolan-2-one, 4-(1-propenoxymethyl)-1,3-dioxolan-2-one, 4-(2-propenyl)-1,3dioxolan-2-one, ethyl-2-furoate, 4-ethenol-1,3-dioxolan-2-one, 2-methoxyl-1,3-dioxolan, divinylphenyl carbonate, dicarbonate quinione, ec hydrazine, bis-N,N-dimethylcarbamate, 4,4-dimethyl-5-methylene-1,3-dioxolan-2-one, benzene tetracarboxyldianhydride, 4-methoxyphenyl-1,3-dioxolan-2-one, 4-trifluorobenzyl-1,3-dioxolan-2-one.