Patent application number | Description | Published |
20110049420 | Homogeneous Nanoparticle Core Doping of Cathode Material Precursors - This invention describes a heterogeneous metal bearing material, comprising a host material composed of primary particles agglomerated into secondary particles, and a particulate dopant material, characterised in that the particulate dopant material is homogeneously distributed within the secondary particles of said host material. In particular, the dopant material is TiO | 03-03-2011 |
20120261610 | Core-Shell Lithium Transition Metal Oxides - A lithium transition metal oxide powder for use in a rechargeable battery is disclosed, where the surface of the primary particles of said powder is coated with a LiF layer, where this layer consists of a reaction product of a fluorine-containing polymer and the primary particle surface. The lithium of the LiF originates from the primary particles surface. Examples of the fluorine-containing polymer are either one of PVDF, PVDF-HFP or PTFE. Examples of the lithium transition metal oxide are either one of —LiCo | 10-18-2012 |
20120270104 | Double-Shell Core Lithium Nickel Manganese Cobalt Oxides - A lithium transition metal oxide powder for use in a rechargeable battery is disclosed, where the surface of the primary particles of said powder is coated with a first inner and a second outer layer, the second outer layer comprising a fluorine-containing polymer, and the first inner layer consisting of a reaction product of the fluorine-containing polymer and the primary particle surface. An example of this reaction product is LiF, where the lithium originates from the primary particles surface. Also as an example, the fluorine-containing polymer is either one of PVDF, PVDF-HFP or PTFE. Examples of the lithium transition metal oxide are either one of —LiCO | 10-25-2012 |
20130175469 | Aluminum Dry-Coated and Heat Treated Cathode Material Precursors - Aluminum dry-coated and heat treated cathode material precursors. A particulate precursor compound for manufacturing an aluminum coated lithium transition metal (M)-oxide powder usable as an active positive electrode material in lithium-ion batteries includes a transition metal (M)-oxide core and a non-amorphous aluminum oxide coating layer covering the core. By providing a heat treatment process for mixed metal precursors that may be combined with an aluminum thy-coating process, novel aluminum containing precursors that may be used to form high quality nickel based cathode materials are obtained. The aluminum dry-coated and heat treated precursors include particles have, compared to prior art precursors, relatively low impurity levels of carbonate and/or sulfide, and can be produced at lower cost. | 07-11-2013 |
20130209885 | Alumina Dry-Coated Cathode Material Precursors - A particulate precursor compound for manufacturing an aluminum doped lithium transition metal (M)-oxide powder usable as an active positive electrode material in lithium-ion batteries includes a transition metal (M)-hydroxide or (M)-oxy-hydroxide core and a non-amorphous aluminum oxide coating layer covering the core. By providing an aluminum thy-coating process where the particulate precursor core compound is mixed with alumina powder in one or more procedures, higher doping levels of aluminum compared to the known prior art may be achieved. The crystal structure of the alumina is maintained during the coating procedures and the core of each mixed transition metal precursor particle is surrounded by a coating layer containing crystalline alumina nano particles. The aluminum concentration in the particulate precursor decreases as the size of the core increases. | 08-15-2013 |
20140170494 | GLASS-COATED CATHODE POWDERS FOR RECHARGEABLE BATTERIES - The invention provides a cathode active material for use in a rechargeable battery, comprising a coated lithium nickel oxide powder or a coated lithium nickel manganese oxide powder, the powder being composed of primary particles provided with a glassy lithium silicate surface coating. A method for preparing the cathode active material comprises the steps of:
| 06-19-2014 |
20150311512 | Bimodal Lithium Transition Metal Based Oxide Powder for Use in a Rechargeable Battery - A bimodal lithium transition metal oxide based powder for a rechargeable battery, comprising: a first lithium transition metal oxide based powder, either comprising a material having a layered crystal structure consisting of the elements Li, a metal M and oxygen, wherein the Li content is stoichiometrically controlled, wherein the metal M has the formula M=Co | 10-29-2015 |
20150311524 | Low Porosity Electrodes for Rechargeable Batteries - A positive electrode for a rechargeable battery comprising at least 95% active cathode material with an electrode loading of at least 6 mg/cm | 10-29-2015 |