Abstract: An electrolyte composition containing (i) at least one aprotic organic solvent; (ii) at least one conducting salt; (iii) at least one silyl ester phosphonate containing the structure of formula (I), wherein T is selected from (Ia) and (Ib); and (iv) optionally one or more additives.

Abstract: Process for making a cathode comprising the following steps (a) Providing a cathode active material selected from layered lithium transition metal oxides, lithiated spinels, lithium transition metal phosphate with olivine structure, and lithium nickel-cobalt aluminum oxides, (b) treating said cathode active material with an oligomer bearing units according to general formula (I a), wherein R1 are the same or different and selected from hydrogen and C1-C4-alkyl, aryl, and C4-C7-cycloalkyl, R2 and R3 are selected independently at each occurrence from phenyl and C1-C8-alkyl, C4-C7-cycloalkyl, C1-C8-haloalkyl, OPR1(O)—*, and —(CR92)p—Si(R2)2—* wherein one or more non-vicinal CR92-groups may be replaced by oxygen, R9 is selected independently at each occurrence from H and C1-C4-alkyl, and p is a variable from zero to 6, and wherein the overall majority of R2 and R3 is selected from C1-C8-alkyl, and, optionally, at least one of carbon in electrically conductive form and, optionally, a binder, (c) appl

Abstract: A non-aqueous electrolyte composition containing (i) at least one aprotic organic solvent; (ii) a compound of formula (I) (iii) at least one ion containing conducting salt; and (iv) optionally one or more additives.

Abstract: An electrochemical cell comprising (A) an anode comprising at least one anode active material, (B) a cathode comprising at least one cathode active material selected from mixed lithium transition metal oxides containing Mn and at least one second transition metal; lithium intercalating mixed oxides containing Ni, Al and at least one second transition metal; LiNiPO4; LiMnPO4; and LiCoPO4; (C) an electrolyte composition containing (i) at least one aprotic organic solvent; (ii) at least one lithium ion containing conducting salt; (iii) a compound of formula (I).

Abstract: An electrolyte composition containing (i) at least one aprotic organic solvent; (ii) at least one conducting salt; (iii) at least one silyl ester phosphonate containing the structure of formula (I), wherein T is selected from (Ia) and (Ib); and (iv) optionally one or more additives.

Abstract: An electrochemical cell has a cathode active material selected from mixed lithium transition metal oxides containing Mn and at least one second transition metal; lithium intercalating mixed oxides containing Ni, Al and at least one second transition metal; and lithium metal phosphates, wherein the outer surface of the particulate cathode active material is at least partially coated with an oxide selected from transition metal oxides, lanthanide oxides, and oxides of metals and half metals of groups 2, 13, and 14 of the periodic system; and an electrolyte composition containing at least one silyl ester phosphonate of formula (I) and at least one silyl ester phosphonate of formula (II)

Abstract: Phosphonate based lithium complexes of formula (I) and their use in electrolyte compositions for electrochemical cells.

Abstract: Process for making a cathode comprising the following steps (a) Providing a cathode active material selected from layered lithium transition metal oxides, lithiated spinels, lithium transition metal phosphate with olivine structure, and lithium nickel-cobalt aluminum oxides, (b) treating said cathode active material with an oligomer bearing units according to general formula (I a), wherein R1 are the same or different and selected from hydrogen and C1-C4-alkyl, aryl, and C4-C7-cycloalkyl, R2 and R3 are selected independently at each occurrence from phenyl and C1-C8-alkyl, C4-C7-cycloalkyl, C1-C8-haloalkyl, OPR1(O)—*, and —(CR92)p—Si(R2)2—* wherein one or more non-vicinal CR92 groups may be replaced by oxygen, R9 is selected independently at each occurrence from H and C1-C4-alkyl, and p is a variable from zero to 6, and wherein the overall majority of R2 and R3 is selected from C1-C8-alkyl, and, optionally, at least one of carbon in electrically conductive form and, optionally, a binder, c) applying a slurry o

Abstract: Phosphonate based lithium complexes of formula (I) and their use in electrolyte compositions for electrochemical cells.

Abstract: An electrochemical cell comprising (A) an anode comprising at least one anode active material, (B) a cathode comprising at least one cathode active material selected from mixed lithium transition metal oxides containing Mn and at least one second transition metal; lithium intercalating mixed oxides containing Ni, Al and at least one second transition metal; LiNiPO4; LiMnPO4; and LiCoPO4; (C) an electrolyte composition containing (i) at least one aprotic organic solvent; (ii) at least one lithium ion containing conducting salt; (iii) a compound of formula (I).

Abstract: A non-aqueous electrolyte composition containing (i) at least one aprotic organic solvent; (ii) a compound of formula (I) (iii) at least one ion containing conducting salt; and (iv) optionally one or more additives.

Abstract: An electrochemical cell comprising (C) an anode containing at least one anode active material, (D) a cathode comprising at least one cathode active material containing Ni, and (C) an electrolyte composition containing (i) at least one aprotic organic solvent; (ii) at least one lithium ion containing conducting salt; (iii) CF2H(CF2)3CH2OCF2CF2H; and (iv) optionally one or more additives.