Halogenated graphene nanoplatelets, and production and uses thereof
AssigneeAlbemarle Corporation
InventorsYinzhi Zhang, John C. Parks, Clancy R. Kadrmas, Joseph M. O'Day
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AssigneeAlbemarle Corporation
InventorsYinzhi Zhang, John C. Parks, Clancy R. Kadrmas, Joseph M. O'Day
Estimating the term…
Halogenated graphene nanoplatelets that are characterized by having, except for the carbon atoms forming the perimeters of the graphene layers of the nanoplatelets, (i) graphene layers that are free from any element or component other than sp2 carbon, and (ii) substantially defect-free graphene layers; the total content of halogen in the nanoplatelets is about 5 wt % or less calculated as bromine and based on the total weight of the nanoplatelets. Processes for producing such nanoplatelets and various end uses for such nanoplatelets are also described. Halogenated exfoliated graphite having a total content of halogen of about 5 wt % or less calculated as bromine and based on the total weight of the halogenated exfoliated graphite and processes for producing the halogenated exfoliated graphite are also provided.
Halogenated graphene nanoplatelets comprising graphene layers and characterized by having, except for the carbon atoms forming the perimeters of the graphene layers of the nanoplatelets, (i) graphene layers that are free from any element or component other than sp2 carbon, and (ii) substantially defect-free graphene layers, wherein the total content of halogen in the nanoplatelets is about 5 wt % or less calculated as bromine and based on the total weight of the nanoplatelets.
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Halogenated exfoliated graphite having a total content of halogen of about 5 wt % or less calculated as bromine and based on the total weight of the halogenated exfoliated graphite.
A process for producing halogenated exfoliated graphite in the absence of water and oxygen, which process comprises:
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An energy storage device comprising an electrode comprised of halogenated graphene nanoplatelets, which nanoplatelets comprise graphene layers and are characterized by having, except for the carbon atoms forming the perimeters of the graphene layers of the nanoplatelets, (i) graphene layers that are free from any element or component other than sp2 carbon, and (ii) substantially defect-free graphene layers, wherein the total content of halogen in the nanoplatelets is about 5 wt % or less calculated as bromine and based on the total weight of the nanoplatelets.
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A thermoplastic or thermoset composition containing in the range of about 0.1 to about 30 wt % of halogenated graphene nanoplatelets comprising graphene layers and characterized by having, except for the carbon atoms forming the perimeters of the graphene layers of the nanoplatelets, (i) graphene layers that are free from any element or component other than sp2 carbon, and (ii) substantially defect-free graphene layers.
A lubricant composition comprising halogenated graphene nanoplatelets comprising graphene layers and characterized by having, except for the carbon atoms forming the perimeters of the graphene layers of the nanoplatelets, (i) graphene layers that are free from any element or component other than sp2 carbon, and (ii) substantially defect-free graphene layers.
A catalyst system comprising halogenated graphene nanoplatelets comprising graphene layers and characterized by having, except for the carbon atoms forming the perimeters of the graphene layers of the nanoplatelets, (i) graphene layers that are free from any element or component other than sp2 carbon, and (ii) substantially defect-free graphene layers.
Dependencies are inferred from the claim text.