Abstract: The invention provides a positive electrode material for lithium ion batteries, comprising a lithium transition metal-based oxide powder having a general formula Li1+a ((Niz(Ni0.5Mn0.5)y Cox)1-k Ak)1-a O2, wherein A is a dopant, with -0.025?a?0.025, 0.15?x?0.22, 0.42?z?0.52, 1.075<z/y<1.300, x+y+z=1 and k<0.01. Different embodiments provide the following features: the lithium transition metal-based oxide powder has a carbon content ?1000 ppm or even ?400 ppm; the lithium transition metal-based oxide powder has a sulfur content between 0.05 and 1.0 wt%; and a dopant A is Zr, and the powder further comprises up to 1 wt% of a coating comprising a boron compound and WO3.

Abstract: A liquid electrolyte lithium secondary battery cell comprising: —a positive electrode material comprising a lithium transition metal-based oxide powder having a general formula Li1+a ((Niz (Ni0.5Mn0.5)y Cox)1-k Ak)1-a O2, wherein A is a dopant, ?0.025?a?0.025, 0.18?x?0.22, 0.42?z?0.52, 1.075<z/y<1.625, x+y+z=1 and k?0.01; and—an electrolyte composition comprising: a) at least one cyclic carbonate, b) at least one fluorinated acyclic carboxylic acid ester, c) at least one electrolyte salt, d) at least one lithium compound selected from lithium phosphate compounds, lithium boron compounds, lithium sulfonate compounds and mixtures thereof, e) at least one cyclic sulfur compound, and f) optionally at least one cyclic carboxylic acid anhydride.

Abstract: A powderous positive electrode material for lithium ion batteries, comprising crystalline lithium transition metal-based oxide particles having a general formula Li1+a ((Niz (Ni0.5Mn0.5)y Cox)1?k Ak)1?a O2, wherein A is a dopant, ?0.030?a?0.025, 0.10?x?0.40, 0.25?z?0.52, x+y+z=1 and k?0.01, wherein the crystalline powder has a crystallite size less than 33 nm as determined by the Scherrer equation based on the peak of the (104) plane obtained from the X-ray diffraction pattern using a Cu K ? radiation source, and wherein the molar ratio MR(Ni) of Ni versus the total transition metal content in a cross section of a particle is higher in the surface area than in the center area of the particle, as determined by EDS analysis.

Abstract: The invention provides a positive electrode material for lithium ion batteries, comprising a lithium transition metal-based oxide powder having a general formula Li1+a ((Niz(Ni0.5Mn0.5)y Cox)1?kAk)1?aO2, wherein A is a dopant, with ?0.025?a?0.025, 0.15?x?0.22, 0.42?z?0.52, 1.075<z/y<1.300, x+y+z=1 and k?0.01. Different embodiments provide the following features: the lithium transition metal-based oxide powder has a carbon content ?1000 ppm or even ?400 ppm; the lithium transition metal-based oxide powder has a sulfur content between 0.05 and 1.0 wt %; a dopant A is Zr, and the powder further comprises up to 1 wt % of a coating comprising a boron compound and WO3.

Abstract: The invention provides a positive electrode material for lithium ion batteries, comprising a lithium transition metal-based oxide powder having a general formula Li1+a((Niz(Ni0.5Mn0.5)y Cox)1?kAk)1?aO2, wherein A is a dopant, with ?0.025?a?0.025, 0.18?x?0.22, 0.42?z?0.52, 1.075<z/y<1.625, x+y+z=1 and k?0.01. Different embodiments provide the following features: the lithium transition metal-based oxide powder has a carbon content ?1000 ppm or even ?400 ppm; the lithium transition metal-based oxide powder has a sulfur content between 0.05 and 1.0 wt %; the powder further comprises between 0.15 and 5 wt % of a LiNaSO4 secondary phase.