Abstract: A lithium ion battery comprising at least one cathode, at least one anode comprising LTO having an optional surface coating, and an electrolyte composition, where the electrolyte composition comprises an organic solvent, one or more lithium salts, one or more SEI forming additives selected from the group consisting of a) alkali metal salts of borates, b) organoboron compounds, c) imides, d) sulfates and e) sulfites; and one or more moisture removing additives selected from the group consisting of f) anhydrides g) nitriles, h) tertiary amines, and i) amides.

Abstract: One or more additives are selected from the group consisting of a) tertiary amines, b) amides, c) pyridine compounds, d) organophosphorus compounds, e) phosphonitrilic compounds, f) organoboron compounds, g) borate salts, h) anhydrides and i) nitrites are effective towards preventing color formation in electrolyte compositions for secondary Li ion batteries, which electrolyte compositions contain an organic solvent, one or more lithium salts and one or more cyclic sulfate additives. Advantageously, a combination of one or more compounds selected from the group consisting of a) tertiary amines, b) amides, c) pyridine compounds, d) organic phosphorus compounds and e) phosphonitrilic compounds is employed together with one or more compounds selected from the group consisting of f) organoboron compounds, g) borate salts, h) anhydrides and i) nitriles.

Abstract: Electrolytic solutions and secondary batteries containing same are provided. The electrolytic solutions contain an additive consisting of one or more C5-C7 monocycloalkane compounds and derivatives thereof.

Abstract: The invention relates to a lithium-ion battery comprising: (1)a cathode comprising LiFePO4; (2) an anode; and (3) an electrolyte comprising: (A) a lithium salt; (B) a non-aqueous organic solvent; and (C) an additive comprising a compound of formula I or formula II, wherein each R1 to R5 is independently H or C1-C10 alkyl, each Ar1 to Ar3 is independently aryl.

Abstract: The invention relates to a composition for preparing a gel electrolyte characterized in that the composition comprises: (1) at least one compound of formula (1), wherein each R1, R2 and R3 independently is a linear or branched alkenyl or alkynyl having 2 to 7 carbon atoms, R4 is a alkyl having 1 to 5 carbon atoms, hydroxyl, or R5COO—, wherein R5 is a linear or branched alkenyl or alkynyl having 2 to 7 carbon atoms, and n is an integer of 0, 1 or 2, and the content of compound of formula (1) is 0.01-10 wt %, preferably 0.1-8 wt % based on the total weight of the composition; (2) a non-aqueous solvent, wherein the content of the nonaqueous solvent is 60-99 wt %, preferably 80-98 wt % based on the total weight of the composition; (3) a lithium salt, wherein the concentration of the lithium salt in the non-aqueous solvent is 0.2-2.0 mol/L, preferably 0.8-1.5 mol/L.