Evonik Operations Gmbh

Daniel Esken

Ryo Takata

Christian Panz

Harald Alff

Ian Klein

Franz Schmidt

Daniel Ness

Armin Wiegand

Christian Hofmann

Katharina Dauth

Sven Müller

Rajendra Negi

Marcel Herzog

Matthias Elm

Michael Glagla

Rainer Bussar

Micha Kirchgessner

A dispersion may include 1 to 50% by weight of lithium metal phosphate of a general formulaLiMN(PO),wherein M is Ti, Zr or Hf; N is a metal other than Li and M; 0≤a≤0.6, 0≤b≤0.6, 0≤c≤0.6, 0≤d≤0.8; and 50 to 99% by weight of trialkyl phosphate. A coating composition may include such a dispersion and such dispersions can be used in lithium ion batteries.

Dispersion and coating composition containing lithium metal phosphate

A process for producing a coated transition metal oxide involves subjecting a transition metal oxide and a pyrogenically produced lithium titanate and/or pyrogenically produced lithium aluminate to dry mixing. A coated transition metal oxide is obtainable by this process; and cathode for a lithium ion battery and a lithium ion battery containing such coated particles is useful.

Transition metal oxide particles encapsulated in nanostructured lithium titanate or lithium aluminate, and the use thereof in lithium ion batteries

Process for producing coated mixed lithium oxide particles, in which mixed lithium oxide particles and a mixture comprising aluminium oxide and titanium dioxide are subjected to dry mixing by means of a mixing unit having a specific power of 0.1-1 kW per kg of mixed lithium oxide particles and mixture used, in total, under shearing conditions. Coated mixed lithium oxide particles comprising a mixture of aluminium oxide and titanium dioxide as coating material, wherein the aluminium oxide and the titanium dioxide are in the form of aggregated primary particles and the weight ratio of aluminium oxide to titanium dioxide is 10:90-90:10. Battery cell comprising the coated mixed lithium oxide particles.

Lithium-mixed oxide particles encapsulated in aluminum oxide and titanium dioxide, and method for using same

Core-shell particles may be based on red lead coated with pyrogenically produced titanium dioxide and/or a pyrogenically produced aluminum oxide, and a process may prepare such core-shell particles which may be used in lead-acid batteries. The red lead may include PbOin a range of from 25 to 32 wt. %.

Core-shell particles based on red lead for lead-acid batteries

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Erlensee, Germany

Daniel Esken