Umicore

Umicore Korea, Ltd.

Randy DePalma

Liang Zhu

Hyo Sun Ahn

Sung Jun Cho

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 NiMnCoAO(OH), wherein 0.15&#x3c;v&#x3c;0.30, v+w=2, 0.30&#x2264;x&#x2264;0.75, 0.10&#x2264;y&#x2264;0.40, 0.10&#x2264;z&#x2264;0.40, A being a dopant with a&#x2264;0.05, and x+y+z+a=1, the precursor consisting of a crystal structure having an XRD pattern with twin peaks at 2&#x3b8;=38&#xb1;0.5&#xb0;, the twin peaks having a left peak having a peak intensity Iand a right peak having a peak intensity I, and a peak intensity ratio R=I/Iwith R&#x3e;0.7, and the XRD pattern being free of peaks belonging to either one or both of a spinel and an oxyhydroxide compound.

Precursors for lithium transition metal oxide cathode materials for rechargeable batteries

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 NiMnCoA, A being a dopant, wherein 0.33&#x2264;x&#x2264;0.60, 0.20&#x2264;y&#x2264;0.33, and 0.20&#x2264;z&#x2264;0.33, v&#x2264;0.05, and x+y+z+v=1, the precursor having a specific surface area PBET in m/g, a tapped density PTD in g/cm, a median particle size PD50 in &#x3bc;m, and wherein (I). 

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Randy DePalma