Imerys Graphite & Carbon Switzerland Sa

Imerys Graphite & Carbon Switzerland Ltd.

Imertech Sas

Johnson Matthey Fuel Cells Limited

Timcal Ag

Michael Spahr

Simone Zürcher

Pirmin Ulmann

Sergio Pacheco Benito

Fabio Rota

Nicolas Probst

Patrick Lanz

Grivei Eusebiu

Salvatore Stallone

Curzio Nessi

Davide Cattaneo

Michal Gulas

Raffaele Gilardi

Eusebiu Grivei

Giovanni Juri

Simone Zurcher

Eberhard Waldhor

Marlene Rodlert-Bacilieri

Jean-Christophe Rietsch

Simone Zuercher

Flavio Mornaghini

Dario Cericola

Hiroyuki Taki

Graham Alan Hards

Jonathan David Brereton Sharman

Sarah Caroline Ball

Thomas M Gruenberger

Thomas L Sidler

Eberhard Waldhör

Tatsuo Umeno

Pascual Perez

Klaus Streb

Edo Rossetti

Marlene Rodlert

Michael T Judge

Fabrizio Corti

Hugues Jacquemin

Julie Michaud

The present disclosure relates to surface-functionalized carbonaceous particles, optionally in agglomerated form, methods for making such surface-functionalized carbonaceous particles and their use, for example as conductive additives in battery electrodes. The surface-functionalized carbonaceous particles are for example obtainable by milling a non-graphitic carbon material, followed by subsequent functionalization through controlled oxidation. The surface-functionalized carbonaceous particles can be used as additive in battery electrodes. The disclosure also pertains to dispersions of such carbonaceous materials in a liquid medium and their use as, among others, conductive coatings. Polymer compounds filled with the surface-functionalized carbonaceous particles are also disclosed.

Surface-functionalized carbonaceous particles, methods of making, and applications of the same

A silicon-carbon particulate composite suitable for use as active material in a negative electrode of a Li-ion battery, a precursor composition comprising the silicon-carbon particulate composite, a negative electrode comprising the silicon-carbon particulate composite and/or precursor composition, a Li-ion battery comprising the negative electrodes, a method of manufacturing the silicon-carbon particulate composite, precursor composition, negative electrode and Li-ion battery, the use of the silicon-carbon particulate composite in a negative electrode of a Li-ion battery to inhibit or prevent silicon pulverization during cycling, for example, during 1st cycle Li intercalation or de-intercalation and/or to maintain electrochemical capacity after 100 cycles, and a device, energy storage cell, or energy storage and conversion system comprising the silicon-carbon particulate composite and/or precursor composition.

Compositions and uses thereof

The present disclosure relates to novel particulate composite materials comprising a graphitic core particle associated with SiOx nanoparticles (0.2&#x2264;X&#x2264;1.8), and coated by a layer of non-graphitic carbon, e.g., pyrolytic carbon deposited by chemical vapor deposition (CVD). Also included are processes for making such particles as well as uses and downstream products for the novel composite material, in particular as an active material in negative electrodes in Li-ion batteries.

Carbon-coated silicon oxide/graphite composite particles, methods of making, and applications of the same

A precursor composition of a negative electrode of a Li-ion battery, a negative electrode comprising or formed from the precursor composition, a Li-ion battery comprising the negative electrode, a device comprising the negative electrode, methods of making the precursor composition, negative electrode and Li-ion battery, and uses of the precursor composition or components thereof for increasing discharge capacity and/or reducing discharge capacity loss and/or improving cycling stability of a Li-ion battery comprising the negative electrode.

Compositions and their uses

The present disclosure relates to novel carbon black materials characterized by a good retention of their structure in the compressed state, as shown, e.g., by a relatively high ratio of compressed OAN/OAN. The materials may inter alia be characterized by a low viscosity in dispersions and by exhibiting low electrical resistivity. Such materials can be advantageously used in various applications, for example in the manufacture of electrochemical cells such as lithium ion batteries or as conductive additive in polymer composite materials. The disclosure also describes a procedure for making such a material as well as well as downstream uses and products comprising said carbon black material.

High-conductive carbon black with low viscosity

The present disclosure relates to a novel surface-modified carbonaceous particulate material having a hydrophilic non-graphitic carbon coating. The material can for example be produced by CVD-coating of a carbonaceous particulate material such as graphite followed by an oxidation treatment under defined conditions. The resulting material exhibits a more hydrophilic surface compared to an unmodified CVD-coated carbon material, which is desirable in many applications, such as when used as an active material in the negative electrode of lithium ion batteries or in a polymer composite material.

Hydrophilic surface-modified carbonaceous particulate material

The present disclosure relates to a novel process for preparing isotropic carbonaceous composite particles with favorable crystallographic, morphological & mechanical properties, wherein relatively fine carbonaceous primary particles are coated with a carbonaceous binder precursor material, agglomerated and finally heat-treated at temperatures of between about 1850 and 3500&#xb0; C. to convert the binder precursor material to non-graphitic or graphitic carbon, thereby resulting in stable highly isotropic carbonaceous composite materials wherein the primary particles of the aggregate are held together by the carbonized/graphitized binder. The present disclosure also relates to the isotropic carbonaceous composite particles obtainable by the process described herein. The disclosure further relates to uses of said isotropic carbonaceous composite material in various applications, including as active material in negative electrodes in lithium-ion batteries, and in secondary products containing said isotropic carbonaceous composite material.

Carbonaceous composite materials with snowball-like morphology

Methods and systems in which a shapable mass, which is processed according to the method or in the system, has a lubricant applied thereto. As it is processed in the system, the shapable mass having the lubricant applied thereto is used to transfer lubricant to a part or parts of the system.

Methods and systems requiring lubrication

Surface-modified, low surface area synthetic graphite may have a BET surface from 1.0 to 4.0 m/g and a crystallite size Lto crystallite size Lratio of greater than 1. Processes for modifying the surface of low surface area synthetic graphite may result in surface-modified, low surface area synthetic graphite have a BET surface from 1.0 to 4.0 m/g and a crystallite size Lto crystallite size Lratio of greater than 1. Such synthetic graphite may have many uses, including for example, as a negative electrode material in lithium-ion batteries.

Surface-modified low surface area graphite, processes for making it, and applications of the same

The present disclosure relates to surface-modified carbon hybrid particles in agglomerated form, methods for making such surface-modified carbon hybrid particles and their use, for example as conductive additives. The surface-modified carbon hybrid particles are characterized by a high surface area and a high mesopore content. The disclosure also pertains to methods for making dispersions of such compounds in a liquid medium in the presence of a surfactant and their use as conductive coatings. Polymer compounds filled with the surface-modified carbon hybrid particles are also disclosed. A further disclosure relates to the use of surface-modified carbon hybrid particles as carbon supports.

Surface-modified carbon hybrid particles, methods of making, and applications of the same

The present invention provides a novel non-exfoliated graphite powder containing highly oriented grain aggregates (HOGA) having a new morphology and surface chemistry, methods for the production of such graphite powders as well as products containing such novel graphite particles.

Processes for treating graphite and graphite materials

Surface-modified carbon hybrid particles may be characterized by a high surface area and a high mesopore content. Surface-modified carbon hybrid particles may be in agglomerated form. Surface-modified carbon hybrid particles may be used, for example, as conductive additives. Dispersions of such compounds in a liquid medium in the presence of a surfactant may be used, for example, as conductive coatings. Polymer compounds filled with the surface-modified carbon hybrid particles may be formed. Surface-modified carbon hybrid particles may be used, for example, as carbon supports.

A graphite powder may include highly oriented grain aggregates, wherein the electrical resistivity of the powder decreases with increasing density. A process for coating a substrate may include providing a coating dispersion including such a graphite powder and applying the coating dispersion to the substrate. An electrode may contain such a graphite powder. A coating dispersion may include such a graphite powder dispersed in a liquid medium. A battery may include such a graphite powder. A compressed body of pure graphite may include such a graphite powder. A lubricant may include such as graphite powder.

Graphite material

A catalyst includes (i) a primary metal or alloy or mixture including the primary metal, and (ii) an electrically conductive carbon support material for the primary metal or alloy or mixture including the primary metal, wherein the carbon support material: (a) has a specific surface area (BET) of 100-600 m/g, and (b) has a micropore area of 10-90 m/g.

Carbon supported catalyst

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Bellinzona, Switzerland

Michael Spahr