Graphene Nanofibers (GNF)
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Graphitic carbon nanofibers consist of a stack of graphene layers held together by weak forces. Due to the low temperature used in their synthesis, separation into single graphene layers can be attained by mild chemical treatments that have been developed by our company. These materials have such unique properties that make then suitable for a variety of applications. Some of the patented applications are described below.
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| Catalysts and Catalyst Supports
The morphology of GNF provides a unique electrically conductive surface that enhances the reactivity and selectivity of supported metal catalyst partcles to the maximum. The GNF themselves also function as very active catalysts for a variety of reactions.
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Lithium Ion Batteries
The layered structure encountered in GNF has been found to be an ideal material for lithium intercalation. Moreover, batteries fabricated with GNF electrodes can operate at temperatures as low as -40C.
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PEM Fuel Cell
Platinum particles supported on GNF exhibit a distinct crystal structure that favors very high activity for use in fuel cell electrodes. In such applications the loading of platinum on the GNF electrode can be substantially reduced compared to that of current systems. Furthermore, the Pt/GNF catalyst is not susceptible to CO poisoning; a phenomemon encountered with traditional systems.
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These are a class of materials that are produced by treatment of platelet graphene carbon nanofibers at selected temperature in an inert gas environment. Under these conditions a set of the exposed edge sites undergo a sealing action to form loops, the number of which can be controlled by the choice of chemcial pretreatment and reaction parameters. They can easily be cleaved into sub-units consisting of between two and eight graphene layers. Carbon Nanochips possess some unique properties and exhibit outstanding performance as electrodes for energy storage devices (LI+batteries) and catalysts for a variety of industrial processes, where they achieve 100% selectivity as in the styrene production, without the need for toxic metals.
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| Unique Architecture
Graphene Nanochips have a structure that consists of flattened rolls of graphite giving the material extraordinary properties for both electronic and catalytic applications.
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Catalyst Supports
GNC provide a highly conductive surface for the dispersion of metal and metal oxide particles that results in an unprecedented catalytic performance. Ag/CNC gives a superior performance in the production of ethylene oxide via the partial oxidation of ethylene over that of the commercial system.
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Catalysts
GNC exhibit very high catalytic activity and selectivity (up to 100%) for various reactions including the oxidative hydrogenation of ethyl benzene to styrene.
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GRAPHENE is a "compound" abundant in nature as part of natural and synthetic graphite. The latter can be produced industrially from coal tar and/or petroleum pitch. The graphene layers present in these solids are quite large and also are interlocked together. Separation into individual layers of graphene is quite a complicated affair requiring boiling in a mixture of concentrated nitric and sulfuric acids, which makes the industrial production of graphene very costly. Catalytic Materials is the only company possessing patented technology for the manufacture of Graphene Nanofibers from Natural Gas. Because the size of the graphene crystallites in nanofibers is about 10-5 times that of graphene in bulk graphite, these materials are the most suitable precursors for the large scale manufacture of GRAPHENE.
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Multi-Walled Carbon Nanotubes MWCNT
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| Process for the Manufacture of MWCNT
Our specially designed catalyst and reaction conditions result in an extremely high quality and high purity product (no other forms of carbon or waxy residues are present).
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Conductive Polymers
Our manufacturing process yields long (>300 microns) and thin (6 nm) MWCNT tubes suitable for a number of applications including conductive transparent films and spun fibers as well as other high-end uses.
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Composition of Matter
Our facetted MWCNT have a "honey comb" structure. Catalytic Materials LLC has acquired a composition of matter patent in the US, which covers all applications of these materials.
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