H.c. Starck Gmbh

Umicore

Gerd Maikowske

Armin Olbrich

Juliane Meese-Marktscheffel

Matthias Jahn

Stefan Malcus

Rüdiger Zertani

Viktor Stoller

Frank Schrumpf

Josef Schmoll

Gerhard Gille

Sven Albrecht

Michael Erb

Michael Kruft

Juliane Meese-Martscheffel

The invention is directed to a process for preparing a pulverulent compound of the formula NiM1M2O(OH)where M1 is Fe, Co, Zn, Cu or mixtures thereof, M2 is Mn, Al, Cr, B, Mg, Ca, Sr, Ba, Si or mixtures thereof, having the following steps:

Powered compounds, method for the production thereof, and use thereof in lithium secondary batteries

The invention is directed to a pulverulent compound of the formula NiM1M2O(OH)where M1 is at least one element selected from the group consisting of Fe, Co, Zn, Cu and mixtures thereof, M2 is at least one element selected from the group consisting of Mn, Al, Cr, B, Mg, Ca, Sr, Ba, Si and mixtures thereof, 0.3&#x2266;a&#x2266;0.83, 0.1&#x2266;b&#x2266;0.5, 0.01&#x2266;c&#x2266;0.5, 0.01&#x2266;x&#x2266;0.99 and 1.01&#x2266;y&#x2266;1.99, wherein the ratio of tapped density measured in accordance with ASTM B 527 to the D50 of the particle size distribution measured in accordance with ASTM B 822 is at least 0.2 g/cm&#xb7;&#x3bc;m. The invention is also directed to a method for the production of the pulverulent compound and the use as a precursor material for producing lithium compounds for use in lithium secondary batteries.

[object Object]

A process for preparing nickel hydroxide by alkaline precipitation from nickel salt solutions in the presence of complexing agents, in which the precipitation is carried out at at least two different locations in the same mother liquor with different precipitation kinetics at the different locations and the mother liquor is mixed prior to agglomeration of the precipitated primary crystals, is described.

Nickel hydroxide and method for producing same

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Goslar, Germany

Gerd Maikowske