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.
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.
The present disclosure relates to novel particulate composite materials comprising a graphitic core particle associated with SiOx nanoparticles (0.2 ≤ X ≤ 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.
H01M 4/36 - Selection of substances as active materials, active masses, active liquids
H01M 4/485 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of mixed oxides or hydroxides for inserting or intercalating light metals, e.g. LiTi2O4 or LiTi2OxFy
H01M 4/587 - Carbonaceous material, e.g. graphite-intercalation compounds or CFx for inserting or intercalating light metals
H01M 4/62 - Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
H01M 4/02 - Electrodes composed of, or comprising, active material
H01M 10/0525 - Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodesLithium-ion batteries
4.
THERMALLY CONDUCTIVE POLYMERS COMPRISING CARBON BLACK MATERIAL
The present disclosure relates to the field of carbon black materials which are inter alia employed as an additive in thermally conductive polymers. In particular, the present disclosure describes heat- treated (e.g., graphitized) carbon black materials which may be incorporated into a polymer matrix to yield polymer composite materials with desired thermal conductivity characteristics. The disclosure also provides methods of producing and using the carbon black materials as well as polymer composites comprising said graphitized carbon black materials. The disclosure further relates to methods of predicting the thermal conductivity of a polymer composite material comprising a given amount of a carbon black material or to methods of preparing a polymer composite material having a desired thermal conductivity.
Porous carbon materials are discussed as well was methods of preparing such porous carbon materials. For example, the method may include combining a carbon precursor and a carbonate compound to form a mixture, heating the mixture to form a composite material, and leaching with an acidic solution to produce a porous carbon material and a second acidic solution. The carbonate compound may be regenerated from the second acidic solution. Using the disclosed methods may permit improved control of the characteristics, including pore size, of the produced porous carbon material.
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.
H01B 1/04 - Conductors or conductive bodies characterised by the conductive materialsSelection of materials as conductors mainly consisting of carbon-silicon compounds, carbon, or silicon
H01M 4/36 - Selection of substances as active materials, active masses, active liquids
H01G 11/42 - Powders or particles, e.g. composition thereof
H01G 11/26 - Electrodes characterised by their structure, e.g. multi-layered, porosity or surface features
H01B 13/00 - Apparatus or processes specially adapted for manufacturing conductors or cables
H01M 4/583 - Carbonaceous material, e.g. graphite-intercalation compounds or CFx
H01M 4/587 - Carbonaceous material, e.g. graphite-intercalation compounds or CFx for inserting or intercalating light metals
H01M 4/133 - Electrodes based on carbonaceous material, e.g. graphite-intercalation compounds or CFx
H01G 11/24 - Electrodes characterised by structural features of the materials making up or comprised in the electrodes, e.g. form, surface area or porosityElectrodes characterised by the structural features of powders or particles used therefor
H01M 4/62 - Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
A silicon particulate suitable for use as active material in a negative electrode of a Li-ion battery, to a precursor composition comprising the silicon particulate, a negative electrode comprising the silicon particulate and/or precursor composition, a Li-ion battery comprising the negative electrodes, the use of the silicon particulate to inhibit or prevent silicon pulverization when used as active material in a negative electrode of a Li-ion battery and/or (ii) to maintain electrochemical capacity of a negative electrode, methods for making the silicon particulate, precursor composition, negative electrode and Li-ion battery, and devices comprising the silicon particulate and/or precursor composition and/or negative electrode and/or Li-ion battery.
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 after100 cycles, and a device, energy storage cell, or energy storage and conversion system comprising the silicon-carbon particulate composite and/or precursor composition.
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.
The present disclosure relates to wet-milled and dried carbonaceous sheared nano-leaves generally characterized by a BET SSA of less than about 40 m2/g and a bulk density from about 0.005 to about 0.04 g/cm3, and compositions comprising such carbonaceous sheared nano-leaves. The present disclosure further relates to methods for preparing them, and their use as a conductive additive in composites such as polymer blends, ceramics, and mineral materials, or as solid lubricant.
The present disclosure relates to compositions comprising at least two different carbonaceous components, at least one being a surface-modified carbonaceous particulate material typically having a relatively high spring-back, and at least one other component being a carbonaceous particulate material (such as graphite) generally having a lower spring-back and/or a higher BET specific surface area than the surface-modified carbonaceous material component. Such compositions are particularly useful for making negative electrodes for lithium-ion batteries and the like in view of their beneficial electrochemical properties, particularly in automotive and energy storage applications. The present disclosure also relates to the use of a low-spring-back carbonaceous particulate materials as an additive in carbonaceous compositions, wherein said compositions are used to prepare anodes for Li-ion batteries in order to increase the electrode density, the cell capacity and/or the cycling stability of said battery while maintaining the power density of the cell compared to a cell with an anode absent the carbonaceous additive.
The present disclosure relates to compositions comprising at least two different carbonaceous components, at least one being a surface-modified carbonaceous particulate material typically having a relatively high spring-back, and at least one other component being a carbonaceous particulate material (such as graphite) generally having a lower spring-back and/or a higher BET specific surface area than the surface-modified carbonaceous material component. Such compositions are particularly useful for making negative electrodes for lithium-ion batteries and the like in view of their beneficial electrochemical properties, particularly in automotive and energy storage applications. The present disclosure also relates to the use of a low-spring-back carbonaceous particulate materials as an additive in carbonaceous compositions, wherein said compositions are used to prepare anodes for Li-ion batteries in order to increase the electrode density, the cell capacity and/or the cycling stability of said battery while maintaining the power density of the cell compared to a cell with an anode absent the carbonaceous additive.
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.
C23C 16/44 - Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating
H01M 4/70 - Carriers or collectors characterised by shape or form
H01M 10/0561 - Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes the electrolyte being constituted of inorganic materials only
H01M 10/0569 - Liquid materials characterised by the solvents
H01M 4/02 - Electrodes composed of, or comprising, active material
14.
CARBONACEOUS COMPOSITE MATERIALS WITH SNOWBALL-LIKE MORPHOLOGY
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°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.
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.
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.
The present disclosure relates to a novel surface-modified carbonaceous material with nanoparticles attached to the surface of said material. The carbonaceous material is for example natural or synthetic graphite, and the nanoparticles are for example in the form of plasma polymers generated in a plasma reactor. The present disclosure also relates to processes for preparing said carbonaceous material and to applications for the same, such as an active material for negative electrodes in lithium-ion batteries. It was found that the deposition of the nanoparticles on the surface of the carbonaceous material leads to significant improvements in terms of its flowability and increases the apparent and/or tap density of the resulting material.
C23C 18/12 - Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coatingContact plating by thermal decomposition characterised by the deposition of inorganic material other than metallic material
H01M 4/58 - Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFySelection of substances as active materials, active masses, active liquids of polyanionic structures, e.g. phosphates, silicates or borates
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.
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.
The present disclosure relates to a process for preparing surface-modified carbonaceous particles, wherein said carbonaceous particles are coated with a surface layer of amorphous carbon by dispersing carbonaceous material with an amphiphilic compound, spray drying of the dispersion and subsequent calcination of the dried material. The disclosure also pertains to surface-modified carbonaceous particles coated with amorphous carbon, which can for example be obtained by the process of the invention. The present disclosure further relates to the use of the surface-modified carbonaceous particles in a variety of technical applications, such as its use as an active material for negative electrodes of lithium ion batteries. The present disclosure also relates to a carbon brush or a polymer composite material, and generally compositions comprising said surface-modified carbonaceous particles, optionally together with other carbonaceous or non-carbonaceous 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.
H01B 1/04 - Conductors or conductive bodies characterised by the conductive materialsSelection of materials as conductors mainly consisting of carbon-silicon compounds, carbon, or silicon
H01M 4/36 - Selection of substances as active materials, active masses, active liquids
H01G 11/42 - Powders or particles, e.g. composition thereof
H01M 4/133 - Electrodes based on carbonaceous material, e.g. graphite-intercalation compounds or CFx
H01G 11/26 - Electrodes characterised by their structure, e.g. multi-layered, porosity or surface features
H01B 13/00 - Apparatus or processes specially adapted for manufacturing conductors or cables
H01M 4/583 - Carbonaceous material, e.g. graphite-intercalation compounds or CFx
H01M 4/62 - Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
H01G 11/24 - Electrodes characterised by structural features of the materials making up or comprised in the electrodes, e.g. form, surface area or porosityElectrodes characterised by the structural features of powders or particles used therefor
H01M 4/587 - Carbonaceous material, e.g. graphite-intercalation compounds or CFx for inserting or intercalating light metals
a ratio of greater than 1. Such synthetic graphite may have many uses, including for example, as a negative electrode material in lithium-ion batteries.
C23C 16/00 - Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
TIM14415PCT 1 ABSTRACT 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.
TIM14415PCT 1 ABSTRACT 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.
The present disclosure relates to surface-modified, low surface area synthetic graphite with a BET surface from 1.0 to 4.0 m2/g and a crystallite size Lc to crystallite size La ratio of greater than 1. The disclosure furthermore relates to surface modification processes for preparing said surface-modified synthetic graphite material said graphite as well as to applications for this graphite, particularly as a negative electrode material in lithium-ion batteries.
The present disclosure relates to surface-modified, low surface area synthetic graphite with a BET surface from 1.0 to 4.0 m2/g and a crystallite size Lc to crystallite size La ratio of greater than 1. The disclosure furthermore relates to surface modification processes for preparing said surface-modified synthetic graphite material said graphite as well as to applications for this graphite, particularly as a negative electrode material in lithium-ion batteries.
The present disclosure relates to ground expanded graphite agglomerate compositions, methods for making such agglomerates, their use as conductive additive, and conductive composites comprising such ground expanded graphite agglomerates. The disclosure also pertains to methods for making such composites and the use of such composites in preparing thermally conductive materials. The agglomerates are characterized by a certain softness allowing the agglomerates to dissolve, e.g., through shear forces applied during compounding, thereby leading to an improved feedability and a highly homogenous distribution of the expanded graphite material in the composite matrix.
H01B 1/04 - Conductors or conductive bodies characterised by the conductive materialsSelection of materials as conductors mainly consisting of carbon-silicon compounds, carbon, or silicon
H01B 1/18 - Conductive material dispersed in non-conductive inorganic material the conductive material comprising carbon-silicon compounds, carbon, or silicon
H01B 1/24 - Conductive material dispersed in non-conductive organic material the conductive material comprising carbon-silicon compounds, carbon, or silicon
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 prod-ucts containing such novel graphite particles.
The invention relates to processes for the production and thermal treatment of carbon material, in particular graphite powders, in an Acheson type oven, using a functional filler comprised essentially of graphitic material in particulate form allowing electrical current to flow through the charge. The particulate form of the filler allows greater flexibil-ity and can be used to control the degree of direct and indirect heating, re-sulting in more uniform products compared to the prior art. Such graphite materials are typically employed as an additive in polymers, batteries or other applications.
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