Highly efficient anode electrode materials for direct methanol fuel cell prepared with ordered and disordered arrays of carbon nanofibers

Chai, Geun Seok; Yoon, Suk Bon; Yu, Jong‐Sung

doi:10.1016/j.carbon.2005.05.041

Cited by 45 publications

(15 citation statements)

References 6 publications

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“…[37][38][39] Singlepore OMCs with small mesopores can find limitations in some specific applications where rapid mass transport is required. 40 The main challenges for fabrication of MPCs with both interconnected macroporous and mesoporous structures lie in complexity and difficulty of creation of meso-macroporous BPS with long-range ordering. Up to date, some strategies have been developed for the synthesis of ordered and interconnected mesoporous-macroporous BPSs, mainly through the combination of colloidal crystals as macrotemplates and inorganic precursors and surfactants (or copolymers) as mesotemplates.…”

Section: Introductionmentioning

confidence: 99%

Ordered multimodal porous carbon with hierarchical nanostructure for high Li storage capacity and good cycling performance

et al. 2010

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Ordered multimodal porous carbon (OMPC) with a hierarchical nanostructure was prepared and explored as an anode for Li ion batteries. OMPC possesses unique structural characteristics, such as large surface area and mesopore volume, particularly the multimodal porosity composed of a welldeveloped 3D interconnected ordered macropore framework with open mesopores embedded in the macropore walls, which facilitate fast mass transport and charge transfer. Compared with ordered mesoporous carbon CMK-3, the OMPC not only demonstrates higher Li storage capacity, but also better cycling performance and rate capability. The enhancement in anode performance especially in cycling performance and rate capability is mainly attributable to the superb structural characteristics of the OMPC, particularly the open larger mesopores located in the ordered macropores, which act as efficient Li storage and buffer reservoirs to reduce volume change during the charge-discharge cycling especially at high rates.

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Section: Introductionmentioning

confidence: 99%

Ordered multimodal porous carbon with hierarchical nanostructure for high Li storage capacity and good cycling performance

et al. 2010

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“…Carbon-based materials have a wide variety of applications such as catalysis, [1][2][3][4] fuel cells, [5][6][7] separations, [8][9][10][11] extractions, and sensor technology. [12][13][14] Overall, carbon is remarkably versatile and offers the possibility of fabricating a diverse range of novel products entirely composed of the element.…”

Section: Introductionmentioning

confidence: 99%

Nanofibers of Fullerene C₆₀ through Interplay of Ball‐and‐Socket Supermolecules

Hubble

Raston

2007

Chemistry A European J

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Mixing solutions of p-tBu-calix[5]arene and C(60) in toluene results in a 1:1 complex (C(60)) intersection(p-tBu-calix[5]arene), which precipitates as nanofibers. The principle structural unit is based on a host-guest ball-and-socket nanostructure of the two components, with an extended structure comprising zigzag/helical arrays of fullerenes (powder X-ray diffraction data coupled with molecular modeling). Under argon at temperatures above 309 degrees C, the fibers undergo selective volatilization of the calixarenes to afford C(60)-core nanostructures encapsulated in a graphitic material sheath, which exhibits a dramatic increase in surface area. Above 650 degrees C the material exhibits an ohmic conductance response, due to the encapsulation process.

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“…CNFs are considered as analogs of CNTs, and have comparatively excellent properties of CNTs such as high electric and thermal conductivity and strong mechanical strength. Therefore, CNFs can replace CNTs in some applications such as polymer additives,32 gas storage materials,33 electrode for fuel cell,34 and catalyst supports 35. Accordingly functionalizing CNFs with polymers and investigating corresponding polymerization principles in the presence of CNFs are of significance.…”

Section: Introductionmentioning

confidence: 99%

Poly(ϵ‐caprolactone)‐functionalized carbon nanofibers by surface‐initiated ring‐opening polymerization

Wang

Gao

2007

J of Applied Polymer Sci

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Carbon nanofibers (CNFs) were covalently functionalized with biodegradable poly(e-caprolactone) (PCL) by in situ ring-opening polymerization (ROP) of e-caprolactone in the presence of stannous octoate. Surface oxidation treatment of the pristine CNFs afforded carboxylic CNFs (CNF-COOH). Reaction of CNF-COOH with excess thionyl chloride (SOCl 2 ) and glycol produced hydroxyl-functionalized CNFs (CNF-OH). Using CNF-OH as macroinitiator, PCL was covalently grafted from the surfaces of CNFs by ROP, in either the presence or absence of sacrificial initiator, butanol. The grafted PCL content was achieved as high as 64.2 wt %, and can be controlled to some extent by adjusting the feed ratio of monomer to CNF-OH. The resulting products were characterized by FTIR, NMR, Raman spectroscopy, TGA, DSC, SEM, TEM, HRTEM, and XRD. Core-shell nanostructures were observed under HRTEM for the PCL-functionalized CNFs because of the thorough grafting. The PCLgrafted CNFs showed different melting and crystallization behaviors from the mechanical mixture of PCL and CNF-OH. This approach to PCL-functionalized CNFs opens an avenue for the synthesis, modification, and application of CNFbased nanomaterials and biomaterials.

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Highly efficient anode electrode materials for direct methanol fuel cell prepared with ordered and disordered arrays of carbon nanofibers

Cited by 45 publications

References 6 publications

Ordered multimodal porous carbon with hierarchical nanostructure for high Li storage capacity and good cycling performance

Ordered multimodal porous carbon with hierarchical nanostructure for high Li storage capacity and good cycling performance

Nanofibers of Fullerene C₆₀ through Interplay of Ball‐and‐Socket Supermolecules

Poly(ϵ‐caprolactone)‐functionalized carbon nanofibers by surface‐initiated ring‐opening polymerization

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Highly efficient anode electrode materials for direct methanol fuel cell prepared with ordered and disordered arrays of carbon nanofibers

Cited by 45 publications

References 6 publications

Ordered multimodal porous carbon with hierarchical nanostructure for high Li storage capacity and good cycling performance

Ordered multimodal porous carbon with hierarchical nanostructure for high Li storage capacity and good cycling performance

Nanofibers of Fullerene C60 through Interplay of Ball‐and‐Socket Supermolecules

Poly(ϵ‐caprolactone)‐functionalized carbon nanofibers by surface‐initiated ring‐opening polymerization

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Nanofibers of Fullerene C₆₀ through Interplay of Ball‐and‐Socket Supermolecules