Nanowire structures comprising carbon
First Claim
1. A nanowire comprising a carbon-based layer, wherein the carbon-based layer is substantially devoid of basal plane carbon.
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Accused Products
Abstract
The present invention is directed to nanowire structures and interconnected nanowire networks comprising such structures, as well as methods for their production. The nanowire structures comprise a nanowire core, a carbon-based layer, and in additional embodiments, carbon-based structures such as nanographitic plates consisting of graphenes formed on the nanowire cores, interconnecting the nanowire structures in the networks. The networks are porous structures that can be formed into membranes or particles. The nanowire structures and the networks formed using them are useful in catalyst and electrode applications, including fuel cells, as well as field emission devices, support substrates and chromatographic applications.
222 Citations
24 Claims
- 1. A nanowire comprising a carbon-based layer, wherein the carbon-based layer is substantially devoid of basal plane carbon.
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15. A method of manufacturing a nanowire, comprising:
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(a) heating a nanowire core; and (b) contacting the nanowire core with one or more carbon-comprising gases to form a carbon-based layer on the nanowire core, wherein the carbon-based layer is substantially devoid of basal plane carbon. - View Dependent Claims (16, 17)
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18. A method of manufacturing a nanowire, comprising:
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(a) heating a nanowire core; (b) contacting the nanowire core with one or more carbon-comprising gases to faun a carbon-based layer on the nanowire core; and (c) forming a precursor coating selected from the group consisting of TiO2, ZrO2, HfO2, Nb2O3, Ta2O5, MoO3 and WO3 on the nanowire core prior to the heating step.
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19. A method for preparing a fuel cell electrode comprising:
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providing a semiconductor wafer having a first surface and a second surface; forming one or more channels on the first surface and the second surface; disposing one or more nanowires in the channels in the first and second surfaces; contacting the nanowires and the first and second surfaces with one or more carbon-comprising gases to form a carbon-based layer on the nanowires and the first and second surfaces; and disposing one or more metal catalysts on the nanowires. - View Dependent Claims (20, 21, 22, 23, 24)
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Specification