Umicore

Umicore Korea, Ltd.

Showa Denko K.k.

Umicore Ag & Co Kg

Kris Driesen

Stijn Put

Daniël Nelis

Masataka Takeuchi

Maxime Blangero

Jan Gilleir

Randy De Palma

Jean Scoyer

YuRi Lee

Jin Hu

Liang Zhu

Sung Ho Cho

Jens M Paulsen

Delphine Longrie

Nobuaki Ishii

Dan V Goia

JiHye Kim

Nicolas Marx

Yvan A Strauven

Jean-Sébastien Bridel

Elena Mueller

Dirk Van Genechten

Michael Gilles

Hirokazu Murata

Hyo Sun Ahn

Arihiro Muto

Jean-Sebastien Bridel

Hailei Zhao

Jing Wang

Mohamed Ati

Arihiro Mutoh

John I Njagi

Daniel Nelis

Jihye Kim

Akihiro Muto

The present invention relates to positive electrode active materials in rechargeable lithium-ion batteries having a difference in cobalt concentration between the center and the edge of particle.

Positive electrode active material for a rechargeable lithium-ion battery

A precursor compound for manufacturing a lithium transition metal based oxide powder usable as an active positive electrode material in lithium-ion batteries, the precursor being either one of a metal-bearing M′-hydroxide, -oxyhydroxide or -carbonate, with M′=NiMnCOAwith x>0, y>0, 0.70≤1-x-y-z≤0.95 and 0≤z<0.1, the precursor comprising having a core comprising a metal-bearing compound M′and a shell comprising a metal-bearing compound M′, wherein M′=NiMnCOAwith 0<xc≤0.2, 0<yc≤0.2, 0≤zc<0.1 and 0.75≤1-x-y-z≤0.95, and M′=NiMnCOAwith 0<xs≤0.25, 0.75<ys≤0.95, 0≤zs<0.1 and 0≤≤0.10.

Precursor of a positive electrode material for a rechargeable lithium-ion battery

A submicron sized Si based powder having an average primary particle size between 20 nm and 200 nm, wherein the powder has a surface layer comprising SiO, with 0&#x3c;x&#x3c;2, the surface layer having an average thickness between 0.5 nm and 10 nm, and wherein the powder has a total oxygen content equal or less than 3% by weight at room temperature. The method for making the powder comprises a step where a Si precursor is vaporized in a gas stream at high temperature, after which the gas stream is quenched to obtain Si particles, and the Si particles are quenched at low temperature in an oxygen containing gas.

Submicron sized silicon powder with low oxygen content

The present invention relates to a composite metal oxide which comprises 80 to 97 wt %, in relation to the weight of the composite metal oxide, of one or more oxides of cerium and 3 to 20 wt %, in relation to the composite metal oxide of a metal oxide comprising tin oxide (SnO) and lanthanum oxide (LaO) and/or aluminum oxide (AlO), a composite material for the storage of nitrogen oxides which comprises such composite metal oxide and palladium, as well as an exhaust gas system containing said composite material.

Low temperature nitrogen oxide adsorber

A production method for a composite of fine particles (A) and carbon particles (B), including the steps of: mixing fine particles (A) formed of a substance comprising at least one kind of Si, Sn, Al, Ge and In; and molten pitch, to obtain a mixture (); pulverizing the mixture () to obtain a pulverized product (); dry-mixing the pulverized product () and carbon particles (B) to obtain a mixture (); and firing the mixture (), followed by pulverization; or including the steps of: adding carbon particles (B) to the mixture (), followed by dry mixing and pulverizing, to obtain a pulverized product (); and firing the pulverized product (), followed by pulverization.

Method for producing composite, and negative electrode material for lithium ion battery

A particulate precursor compound for manufacturing a lithium transition metal (M)-oxide powder for use 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 comprising Ni, Mn and Co in a molar ratio x:y:z and having a specific surface area BET in m/g and a sulfur content S expressed in wt %, wherein formula (I).

Precursors for lithium transition metal oxide cathode materials for rechargeable batteries

Composite powder for use in an anode of a lithium ion battery, whereby the particles of the composite powder comprise silicon-based domains in a matrix, whereby the individual silicon-based domains are either free silicon-based domains that are not or not completely embedded in the matrix or are fully embedded silicon-based domains that are completely surrounded by the matrix, whereby the percentage of free silicon-based domains is lower than or equal to 4 weight % of the total amount of Si in metallic or oxidized state in the composite powder.

Composite powder for use in an anode of a lithium ion battery, method of preparing such a composite powder and method for analysing such a composite powder

This invention relates to a negative electrode material for lithium-ion batteries comprising silicon and having a chemically treated or coated surface influencing the zeta potential of the surface. The active material consists of particles or particles and wires comprising a core comprising silicon, wherein the particles have a positive zeta potential in an interval between pH 3.5 and 9.5, and preferably between pH 4 and 9.5. The core is either chemically treated with an amino-functional metal oxide, or the core is at least partly covered with OSiHgroups, with 1&#x3c;x&#x3c;3, 1&#x2264;y&#x2264;3, and x&#x3e;y, or is covered by adsorbed inorganic nanoparticles or cationic multivalent metal ions or oxides.

Positively charged silicon for lithium-ion batteries

A carbonate precursor compound of a lithium manganese based oxide powder for a positive electrode of a rechargeable battery, the oxide having the general formula LiMO, wherein &#x2212;0.03&#x2264;v&#x2264;0.25, wherein M is a composition comprising at least 50 mol % of manganese, and wherein the carbonate precursor compound has a secondary particle size D50 expressed in &#x3bc;m, and a tap density TD expressed in g/cm, with either 1&#x2264;TD&#x2264;(2.78*D50)/(D50+7.23) and the compound having a particle size distribution having a span S&#x2264;1.8 with S=(D90&#x2212;D10)/D50; or 1&#x2264;TD&#x2264;(2.78*D50)/(D50+7.50).

Carbonate precursors for high lithium and manganese containing cathode materials

The invention relates to An active material for a rechargeable lithium ion battery, comprising metal (M) based particles and a silicon oxide SiOwith 0&#x3c;x&#x3c;2, wherein said SiOis an intimate mixture of amorphous silicon (Si) and crystalline silicon dioxide (SiO); wherein the metal (M) is preferably selected from the group consisting of Si, Sn, In, Al, Fe and combinations thereof.

Negative electrode material for a rechargeable battery and method for producing the same

A negative electrode active material for a lithium ion battery having the composition formula SiSnNiTiMC, wherein a, b, c, y, m and z represent atomic % values, wherein M is either one of more of Fe, Cr and Co, and wherein a&#x3e;0, b&#x3e;0, z&#x3e;0, y&#x2267;0, 0&#x2266;m&#x2266;1, c&#x3e;5, z+0.5*b&#x3e;a and c+y&#x3e;0.75*b. The process for preparing the active material comprises the steps of:&#x2014;providing a mixture of elemental and/or alloyed powders of the elements in the composition SiSnNiTiMC, and&#x2014;high energy milling under non-oxidizing conditions of the powder mixture.

Si based negative electrode material

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Hasselt, Belgium

Kris Driesen