Metal-Organic Framework as a Template for Porous Carbon Synthesis

Liu, Bo; Shioyama, Hiroshi; Akita, Tomoki; Xu, Qiang

doi:10.1021/ja7106146

Cited by 1,680 publications

(1,013 citation statements)

References 34 publications

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“…[15,[63][64][65][66][67][68][69][70][71][72][73][74][75] Furthermore, at such a high scan rate (i.e., 0.1 V/s), the capacitance value of ECNF-M3 compared favorably to those of many other carbon-based supercapacitor materials, including conventional systems such as mesoporous carbon (ca. 150 F/g) [37][38][39] and activated carbon (<120 F/g), [40][41][42] as well as recently reported carbon nanomaterials such as carbon nanocages (185 F/g), [36] carbon nanococoons (175 F/g), [43] and graphene (ca. 150 -200 F/g).…”

Section: Electrocapacitive Performancementioning

confidence: 98%

“…Carbonaceous materials are well-known examples of DL capacitive materials. [2,35] However, carbon-based electrocapacitive systems usually exhibit moderate specific capacitances, especially at high operation rates; for many carbon systems of various forms, [36][37][38][39][40][41][42][43][44][45][46][47] the optimal capacitance value obtained at a high scan rate of 0.1 V/s or at a high current density of 1 A/g is typically 50-150 F/g, and rarely exceeds 200 F/g. Nonetheless, carbon electrodes are still the most popular choice to date for use in commercial supercapacitor devices due to their ease of synthesis, low cost, and exceptional chemical and electrochemical stability.…”

Section: Introductionmentioning

confidence: 99%

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Microwave-Assisted Oxidation of Electrospun Turbostratic Carbon Nanofibers for Tailoring Energy Storage Capabilities

Mao

Yang

et al. 2015

Chem. Mater.

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We report the systematic structural manipulation of turbostratic electrospun carbon nanofibers (ECNFs) using a microwave-assisted oxidation process, which is extremely rapid, highly controllable, and affords controlled variation of the capacitive energy storage capabilities of ECNFs. We find a non-monotonic relationship between the oxidation degree of ECNFs and their electrocapacitive performance, and present a detailed study on the electronic and crystalline structures of ECNFs to elucidate the origin of this non-monotonic relation. The ECNFs with an optimized oxidation level show ultrahigh capacitances at high operation rates, exceptional cycling performance and an excellent energy-power combination. We have identified three key factors required for optimal energy storage performance for turbostratic carbon systems: (i) an abundance of surface oxides, (ii) microstructural integrity and (iii) an appropriate interlayer spacing.

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Section: Electrocapacitive Performancementioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Microwave-Assisted Oxidation of Electrospun Turbostratic Carbon Nanofibers for Tailoring Energy Storage Capabilities

Mao

Yang

et al. 2015

Chem. Mater.

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“…Ever since the pioneering work by Xu's group, 24 a renewed interest in porous carbons was triggered due to the large number of available MOFs with versatile pore structures. And the nanoporous carbons thus obtained showed attractive features, including ultra-high SSA and pore volumes, and exhibited a wide spectrum of energy-related applications in hydrogen storage, [25][26][27] carbon materials with uniformly distributed catalytic centers and high active site density.…”

Section: Introductionmentioning

confidence: 99%

Highly graphitized nitrogen-doped porous carbon nanopolyhedra derived from ZIF-8 nanocrystals as efficient electrocatalysts for oxygen reduction reactions

et al. 2014

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Nitrogen-doped graphitic porous carbons (NGPCs) have been synthesized by using a zeolite-type nanoscale metal-organic framework (NMOF) as a self-sacrificing template, which simultaneously acts as both the carbon and nitrogen sources in a facile carbonization process. The NGPCs not only retain the nanopolyhedral morphology of the parent NMOF, but also possess rich nitrogen, high surface area and hierarchical porosity with well-conducting networks. The promising potential of NGPCs as metal-free electrocatalysts for oxygen reduction reactions (ORR) in fuel cells is demonstrated. Compared with commercial Pt/C, the optimized NGPC-1000-10 (carbonized at 1000 C for 10 h) catalyst exhibits comparable electrocatalytic activity via an efficient four-electron-dominant ORR process coupled with superior methanol tolerance as well as cycling stability in alkaline media. Furthermore, the controlled experiments reveal that the optimum activity of NGPC-1000-10 can be attributed to the synergetic contributions of the abundant active sites with high graphitic-N portion, high surface area and porosity, and the high degree of graphitization. Our findings suggest that solely MOF-derived heteroatom-doped carbon materials can be a promising alternative for Pt-based catalysts in fuel cells.

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“…Due to their permanent nanoscale cavities and open channels, which are similar to mesoporous silicas and zeolites, MOFs exhibit a strong potential for use as templates and reactive precursors for synthesizing nanoporous carbon materials 28,29 . In addition, research has continuously focused on preparing metal oxides through the direct calcination of various MOFs [30][31][32] .…”

mentioning

confidence: 99%

High lithium anodic performance of highly nitrogen-doped porous carbon prepared from a metal-organic framework

2014

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Theoretical and experimental results have revealed that the lithium-ion storage capacity for nitrogen-doped graphene largely depends on the nitrogen-doping level. However, most nitrogen-doped carbon materials used for lithium-ion batteries are reported to have a nitrogen content of approximately 10 wt% because a higher number of nitrogen atoms in the two-dimensional honeycomb lattice can result in structural instability. Here we report nitrogen-doped graphene particle analogues with a nitrogen content of up to 17.72 wt% that are prepared by the pyrolysis of a nitrogen-containing zeolitic imidazolate framework at 800°C under a nitrogen atmosphere. As an anode material for lithium-ion batteries, these particles retain a capacity of 2,132 mA h g À 1 after 50 cycles at a current density of 100 mA g À 1 , and 785 mAh g À 1 after 1,000 cycles at 5 A g À 1 . The remarkable performance results from the graphene analogous particles doped with nitrogen within the hexagonal lattice and edges.

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Metal-Organic Framework as a Template for Porous Carbon Synthesis

Cited by 1,680 publications

References 34 publications

Microwave-Assisted Oxidation of Electrospun Turbostratic Carbon Nanofibers for Tailoring Energy Storage Capabilities

Microwave-Assisted Oxidation of Electrospun Turbostratic Carbon Nanofibers for Tailoring Energy Storage Capabilities

Highly graphitized nitrogen-doped porous carbon nanopolyhedra derived from ZIF-8 nanocrystals as efficient electrocatalysts for oxygen reduction reactions

High lithium anodic performance of highly nitrogen-doped porous carbon prepared from a metal-organic framework

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