Abstract:
A precursor compound for manufacturing a lithium transition metal based oxide powder usable as an active positive electrode material in lithium-ion batteries, the precursor being either one of a metal-bearing M′-hydroxide, -oxyhydroxide or -carbonate, with M′=Ni1-x-y-zMnxCOyAz with x>0, y>0, 0.70≤1-x-y-z≤0.95 and 0≤z
Abstract:
The present invention relates to positive electrode active materials in rechargeable lithium-ion batteries having a difference in cobalt concentration between the center and the edge of particle.
Abstract:
A crystalline precursor compound for manufacturing a lithium transition metal based oxide powder usable as an active positive electrode material in lithium-ion batteries, the precursor having a general formula M(O)x(OH)2-x-y(CO3)y, with 0 30.104 cm5/g2.
Abstract:
A secondary Li-ion battery comprising a casing comprising as battery parts: a positive electrode comprising a powderous positive electrode active material, a negative electrode, a separator, and an electrolyte, wherein the casing is provided with means for maintaining the exterior form of the casing, and wherein the positive electrode active material has the general formula Li1+a(NixCoyMz)1−aO2, wherein M=M′1−bAb, M′ being either one or both of Al and Mg, and A being a dopant with b≤0.10, and wherein −0.03≤a≤0.03, 0.80≤×≤0.95, 0.05≤y≤0.20, z≤0.10, with x+y+z=1, and wherein the positive electrode active material has a crystallite size ≤43 nm as determined by the Sherrer equation based on the peak of the (104) plane obtained from the X-ray diffraction pattern using a Cu Kα radiation source, and wherein the positive electrode active material further comprises between 0.4 and 0.6 wt % LiOH.
Abstract:
A positive electrode composition for a rechargeable battery, the composition comprising a first and a second powderous lithium metal oxide, the first lithium metal oxide comprising either one or more of Ni, Mn and Co, the second lithium metal oxide powder having either: the formula LixWM′yOz, M′ being a metal having a valence state of +2 or +3, with 0
Abstract:
A lithium metal oxide powder for use as a cathode material in a rechargeable battery, consisting of Li metal oxide core particles having a general formula Li1+d (Nix Mny Coz Zrk M′m)i−d 02±e Ar; wherein Al203 is attached to the surface of the core particles; wherein 0≦d≦0.08, 0.2≦x≦0.9, 0
Abstract:
A particulate precursor compound for manufacturing a lithium transition metal oxide powder for use as an active positive electrode material in lithium-ion batteries, the precursor having the general formula NixMnyCozAaOv(OH)w, wherein 0.15 0.7, and the XRD pattern being free of peaks belonging to either one or both of a spinel and an oxyhydroxide compound.
Abstract:
A particulate precursor compound for manufacturing a lithium transition metal (M)-oxide powder usable as an active positive electrode material in lithium-ion batteries, wherein (M) is NixMnyCozAv, A being a dopant, wherein 0.33≦x≦0.60, 0.20≦y≦0.33, and 0.20≦z≦0.33, v≦0.05, and x+y+z+v=1, the precursor having a specific surface area PBET in m2/g, a tapped density PTD in g/cm3, a median particle size PD50 in μm, and wherein (I).
Abstract:
A bimodal lithium transition metal oxide based powder mixture comprising a first and a second lithium transition metal oxide based powder. The first powder comprises a material A having a layered crystal structure comprising the elements Li, a transition metal based composition M and oxygen and has a particle size distribution with a span
Abstract:
A particulate precursor compound for manufacturing a lithium transition metal (M)-oxide powder for use as an active positive electrode material in lithium-ion batteries, wherein (M) is NixMnyCozAv, A being a dopant, wherein 0.33≤x≤0.60, 0.20≤y≤0.33, and 0.20≤z≤0.33, v≤0.05, and x+y+z+v=1, the precursor comprising Ni, Mn and Co in a molar ratio x:y:z and having a specific surface area BET in m2/g and a sulfur content S expressed in wt %, wherein formula (I).