Basf Se Corporation

Karlsruher Institut Fur Technologie

Thomas Michael Ryll

Jordan Lampert

Aleksei Volkov

Ji-Yong Shin

Markus Hoelzle

Christoph Erk

Michael Eder

Wolfgang Rohde

Kerstin Schierle-Arndt

Sabine Weiguny

Simon Schroedle

Torben Adermann

Fabian Seeler

Pascal Hartmann

Michael Zeilinger

Jacob Haag

Lea De Biasi

Brandon Ray Long

Jordan K Lampert

Process for the recovery of transition metal from spent lithium ion batteries containing nickel, wherein said process comprises the steps of (a) heating a lithium containing transition metal oxide material to a temperature in the range of from 400 to 1200° C., (b) treating said heat-treated material with water, (c) treating the solid residue from step (b) with an acid selected from sulfuric acid, hydrochloric acid, nitric acid, methanesulfonic acid, oxalic acid and citric acid, (d) adjusting the pH value to 2.5 to 8, (e) removing compounds of Al, Cu, Fe, Zn or combinations of at least two of the foregoing from the solution or slurry obtained in step (d).

Process for the recovery of lithium and transition metal using heat

The present invention is related to an electrode active material for a lithium-ion battery of general formula (I): Li(NiCoMnM)Owherein x is in the range of from zero to 0.1, a is in the range of from 0.1 to 0.5, b is in the range of from 0.4 to 0.9, c is in the range of from zero to 0.3, d is in the range of from zero to 0.1, M is selected from Al, B, Mg, W, Mo, Ti, Si and Zr, with a+b+c+d=1 and a&#x3e;c. In addition, the present invention is related to a method of manufacture of electrode active materials and to their use.

Electrode active material, its manufacture and use

Process for making a particulate material of general formula (I),Li(NiCoMnM)O&#x2003;&#x2003;(I)

Process for making cathode materials for lithium ion batteries

The present invention is directed towards a process for making a particulate material according to the general formula (I): NiCOMnM(O)(OH), wherein M is selected from Al and Ti, x is in the range of from 0.01 to 0.9, y is in the range of from 1.1 to 1.99, a is in the range of from 0.3 to 0.85, b is in the range of from 0.05 to 0.4, c is in the range of from 0.1 to 0.5, d is in the range of from 0.001 to 0.03, with a+b+c+d=1 said process comprising the following steps: (a) providing an aqueous slurry of particles of aluminum hydroxide or titanium dioxide, (b) adding an aqueous solution of water-soluble salts of nickel, cobalt and manganese and a solution of alkali metal hydroxide to the slurry according to step (a), thereby co-precipitating a layer of a mixed hydroxide of nickel and cobalt and manganese hydroxide on the particles according to step (a), (c) removing particles of (NiCOMnAl)(OH)or (NiCOMnTi)(OH)so obtained and drying them in the presence of oxygen.

Process for making a cathode active material and a precursor therefore, cathode active material and its use

A process is described for producing mixed oxide in particulate form, comprising cations of lithium and cations of at least two transition metals selected from the group consisting of nickel, cobalt, manganese, titanium, vanadium, chromium and iron, as are mixed oxides produced by this process.

Mixed transition metal oxides for lithium ion batteries

Process for making a particulate material of general formula (I), wherein the integers are defined as follows: M is selected from Al and Ti, x is in the range of from 0.015 to 0.03, a is in the range of from 0.3 to 0.6, b is in the range of from 0.05 to 0.35, c is in the range of from 0.2 to 0.5, d is in the range of from 0.001 to 0.03, with a+b+c+d=1 said process comprising the following steps: (a) co-precipitating a mixed hydroxide of nickel, cobalt and manganese from a solution of water-soluble salts of nickel, cobalt and manganese by contacting such solution with a solution of alkali metal hydroxide, (b) adding an aqueous solution of an aluminate or titanate and thereby co-precipitating a layer of a mixed hydroxide of nickel and cobalt and manganese and aluminum or titanium on the particles formed in step (a), (c) removing particles of (NiCoMnAl)(OH)or (NiCoMnTi)(OH)so obtained and drying them in the presence of oxygen, (d) mixing the particles obtained in step (c) with at least one Li compound selected from LiO, LiOH and LiCO, (e) calcining the mixture obtained according to step (d) at a temperature in the range of from 920 to 950&#xb0; C.

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Heddesheim, Germany

Thomas Michael Ryll