Formation of vapor-grown carbon fibers in CO-CO2-H2 mixtures, II. Influence of catalyst

Ishioka, Munehiro; Okada, Toshihiko; Matsubara, Kenji; Endo, Morinobu

doi:10.1016/0008-6223(92)90008-k

Cited by 27 publications

(8 citation statements)

References 6 publications

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“…4,5 Therefore, many researchers have tried in recent years to reach the final target of mass production. Among the various processing methods, the most important one has been the development of the floating reactant method, [6][7][8] which allows a three-dimensional dispersion of the hydrocarbon together with the catalytic particles derived from the pyrolysis of organometallic compounds, such as ferrocene, in a reaction chamber, resulting in a high yield and a rather uniform diameter of the resulting fibers. Therefore, the floating reactant method is thought to be a promising means for the mass production of carbon fibers at relatively low cost.…”

Section: Introductionmentioning

confidence: 99%

Structural Characterization of Boron-doped Submicron Vapor-grown Carbon Fibers and Their Anode Performance

et al. 2000

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Structural evolution of undoped and boron-doped submicron vapor-grown carbon fibers (S-VGCFs) was monitored as a function of heat-treatment temperature (HTT). Based on x-ray and Raman data, over the range of HTT from 1800 to 2600 °C, it was found that boron atoms act as catalysts to promote graphitization due to boron's higher diffusivity. For the range of HTT from 2600 to 2800 °C, the process of boron out-diffusion from the host material induces defects, such as tilt boundaries; this process would be related with the improved capacity and Coulombic efficiency of boron-doped S-VGCFs. When 10 wt% S-VGCFs was used as an additive to synthetic graphite, the cyclic efficiency of the capacities was improved to almost 100%.

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Section: Introductionmentioning

confidence: 99%

Structural Characterization of Boron-doped Submicron Vapor-grown Carbon Fibers and Their Anode Performance

et al. 2000

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“…Among the different preparing techniques, the most significant one has been the advancement of the floating reactant technique [36,37], which permits a Vapor-Grown Carbon Fiber Synthesis, Properties, and Applications DOI: http://dx.doi.org/10.5772/intechopen.92300 three-dimensional scattering of the hydrocarbon together with the catalytic particles got from the pyrolysis of organometallic compounds, for example, ferrocene, in a reaction chamber, ensuing about a high yield and a fairly uniform diameter across of the resulting fibers. Thus, the floating reactant strategy is believed to be a promising method for the large scale manufacturing of carbon fibers at generally economical.…”

Section: Vapor Grown Carbon Nanofiber By Floating Reactor Methodsmentioning

confidence: 99%

Vapor-Grown Carbon Fiber Synthesis, Properties, and Applications

Manivannan¹,

Kalaiselvan²,

Padmavathi³

2020

Composite and Nanocomposite Materials - From Knowledge to Industrial Applications

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Carbon nanofibers are promising to revolutionize several fields in material science and are suggested to open the way into nanotechnology. Carbon fiber has become an important reinforcement material in composite materials and battery technology because of its low density, high strength, and tensile modulus. Furthermore, high electrical conductivity, thermal conductivity, and mechanical properties of carbon fiber make it useful in a wide variety of products. This chapter highlighting the synthesis and growth pattern of vapor grown carbon fiber (VGCFs). This chapter work reported here includes the application of VGCFs in composite and battery technology.

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“…In the former, catalysts can also be placed in a boat or crucible. The majority of the publications reported the production of VGCFs using the floating catalyst technique, resulting in short (discontinuous) fibers [14][15][16][17][18][19][20]. While some reported the growth of VGCFs using the catalyst-seeded technique, the resulting fibers are not in a form of mat [21,22].…”

Section: Introductionmentioning

confidence: 98%