An electrode includes a network of compressed interconnected nanostructured carbon particles such as carbon nanotubes. Some nanostructured carbon particles of the network are in electrical contact with adjacent nanostructured carbon particles. Electrodes may be used in various devices, such as capac
An electrode includes a network of compressed interconnected nanostructured carbon particles such as carbon nanotubes. Some nanostructured carbon particles of the network are in electrical contact with adjacent nanostructured carbon particles. Electrodes may be used in various devices, such as capacitors, electric arc furnaces, batteries, etc. A method of producing an electrode includes confining a mass of nanostructured carbon particles and densifying the confined mass of nanostructured carbon particles to form a cohesive body with sufficient contacts between adjacent nanostructured carbon particles to provide an electrical path between at least two remote points of the cohesive body. The electrodes may be sintered to induce covalent bonding between the nanostructured carbon particles at contact points to further enhance the mechanical and electrical properties of the electrodes.
대표청구항▼
1. A method of producing a sintered object, comprising: mixing a mass of nanostructured carbon particles with at least one fluid containing a dissolved carbon source to produce a paste;pyrolyzing the paste such that the dissolved carbon source forms residual solid carbon within a cohesive body of th
1. A method of producing a sintered object, comprising: mixing a mass of nanostructured carbon particles with at least one fluid containing a dissolved carbon source to produce a paste;pyrolyzing the paste such that the dissolved carbon source forms residual solid carbon within a cohesive body of the nanostructured carbon particles; andsintering the cohesive body of the nanostructured carbon particles with the residual solid carbon at a pressure from about 10 MPa to about 1000 MPa to form contacts between adjacent nanostructured carbon particles to provide an electrical path between at least two remote points of the cohesive body. 2. The method of claim 1, wherein sintering the cohesive body comprises sintering in an inert atmosphere or in a vacuum. 3. The method of claim 1, wherein the mass of nanostructured carbon particles comprises carbon nanotubes. 4. The method of claim 3, wherein the carbon nanotubes have metallic properties. 5. The method of claim 3, wherein the carbon nanotubes have a multi-modal distribution of outer diameters. 6. The method of claim 1, further comprising forming covalent bonds between at least some of the adjacent nanostructured carbon particles. 7. The method of claim 1, further comprising disposing the mass of nanostructured carbon particles between opposing dies in a press. 8. The method of claim 1, wherein sintering the cohesive body of the nanostructured carbon particles with the residual solid carbon comprises sintering a plurality of unfluorinated nanostructured carbon particles. 9. The method of claim 1, further comprising reducing carbon oxides with a reducing agent in the presence of a catalyst to form the nanostructured carbon particles, wherein the nanostructured carbon particles comprise a plurality of carbon nanotubes. 10. The method of claim 1, further comprising selecting nanostructured carbon particles comprising a mixture of carbon nanotubes, wherein the mixture of carbon nanotubes comprises: at least one material selected from the group consisting of multi-wall carbon nanotubes and carbon nanofibers with diameters greater than about 30 nm; andat least one material selected from the group consisting of single-wall, double-wall, and triple-wall carbon nanotubes with diameters less than about 20 nm. 11. The method of claim 1, wherein mixing a mass of nanostructured carbon particles with at least one fluid containing a dissolved carbon source comprises mixing a mass of carbon nanofibers with at least one fluid containing a dissolved carbon source. 12. The method of claim 1, further comprising mixing the mass of nanostructured carbon particles with at least one material selected from the group consisting of metal, ceramic, and glass. 13. The method of claim 1, further comprising; adding a surface layer of nanostructured carbon particles to the cohesive body of nanostructured carbon particles; andsintering the surface layer of nanostructured carbon particles to form bonds between the surface layer of nanostructured carbon particles and the cohesive body of nanostructured carbon particles. 14. The method of claim 13, further comprising forming a pattern of sintered nanostructured carbon particles adjacent to non-sintered nanostructured carbon particles in the cohesive body of nanostructured carbon particles. 15. The method of claim 14, wherein forming a pattern of sintered nanostructured carbon particles comprises irradiating a portion of the nanostructured carbon particles. 16. The method of claim 1, further comprising extruding the paste through a die to form a green object before pyrolizing the paste. 17. The method of claim 1, wherein sintering the cohesive body comprises exposing the cohesive body to a temperature of at least 1,000° C. 18. A method of producing a sintered object, comprising: mixing a mass of nanostructured carbon particles with at least one fluid;mixing the nanostructured carbon particles and the at least one fluid with a sugar solution to form a paste;extruding the paste to form a green object;heating the green object to pyrolyze the sugar; andfurther heating the green object to a temperature of at least 1,000° C. and a pressure from about 10 MPa to about 1,000 MPa to form a cohesive body having contacts between adjacent nanostructured carbon particles and to provide an electrical path between at least two remote points of the cohesive body.
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