Nanoporous carbons through direct carbonization of a zeolitic imidazolate framework for supercapacitor electrodes

Chaikittisilp, Watcharop; Hu, Ming; Wang, Hongjing; Huang, Hou-Sheng; Fujita, Taketoshi; Wu, Kevin C.‐W.; Chen, Lin-Chi; Yamauchi, Yusuke; Ariga, Katsuhiko

doi:10.1039/c2cc33433j

Cited by 644 publications

(406 citation statements)

References 34 publications

Supporting

Mentioning

398

Contrasting

Unclassified

Order By: Relevance

“…3a,b), the as-synthesized N-C-800 inherited the original morphology of the ZIF-8 particles, even after high-temperature thermal treatment under a N 2 Table 1) was larger than that of the nanoporous carbon (approximately 1 nm) that was obtained by direct carbonization of a commercially available ZIF-8 without any additional carbon sources 41 . On the basis of previous studies, a pore size of 2-10 nm facilitates rapid electrolyte transfer because the nanopores and interconnections provide more favourable pathways for ion penetration and transport 42 .…”

Section: Characterizationmentioning

confidence: 99%

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

2014

View full text Add to dashboard Cite

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.

show abstract

Section: Characterizationmentioning

confidence: 99%

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

2014

View full text Add to dashboard Cite

show abstract

“…[19] The choice of precursor material can affect the functionality in the resultant carbons. For instance, carbonized ZIFs have been used for supercapacitor electrodes, [20] carbonized MOFs as oxygen reduction catalysts and lithium sulfur batteries, [21] carbonized PAFs for gas storage, [22] carbonized CMPs as chemosensors, electrocatalysis, and supercapacitors, [23,24] and carbonized HCPs for benzene/ chlorobenzene vapor absorption and as a porous carbon support for oxygen reduction reactions. [25] While these materials show good performance for their respective applications, many of the microporous precursors involved costly starting materials (e.g., PAFs, many MOFs, and CMPs) or expensive catalysts for their preparation (e.g., CMPs, PAFs).…”

Section: Doi: 101002/adma201603051mentioning

confidence: 99%

Hyperporous Carbons from Hypercrosslinked Polymers

et al. 2016

View full text Add to dashboard Cite

“…derived carbons yields multifunctional features, leading to ultrahigh specific capacitance, where a major contributing factor is the pseudocapacitance of the surface functional groups. [17] In recent years, graphene-oxide (GO) based carbons have emerged as promising electrode materials for electrochemical energy storage and conversion devices owing to their highly tunable surface chemistry. [18][19][20] The top-down synthesis of GO precursor from graphite is a viable method for further development of functional porous structures.…”

Section: Introductionmentioning

confidence: 99%

Design of 3D Graphene‐Oxide Spheres and Their Derived Hierarchical Porous Structures for High Performance Supercapacitors

Gadipelli

Yang

et al. 2017

Small

View full text Add to dashboard Cite

Graphene‐oxide (GO) based porous structures are highly desirable for supercapacitors, as the charge storage and transfer can be enhanced by advancement in the synthesis. An effective route is presented of, first, synthesis of three‐dimensional (3D) assembly of GO sheets in a spherical architecture (GOS) by flash‐freezing of GO dispersion, and then development of hierarchical porous graphene (HPG) networks by facile thermal‐shock reduction of GOS. This leads to a superior gravimetric specific capacitance of ≈306 F g−1 at 1.0 A g−1, with a capacitance retention of 93% after 10 000 cycles. The values represent a significant capacitance enhancement by 30–50% compared with the GO powder equivalent, and are among the highest reported for GO‐based structures from different chemical reduction routes. Furthermore, a solid‐state flexible supercapacitor is fabricated by constructing the HPG with polymer gel electrolyte, exhibiting an excellent areal specific capacitance of ≈220 mF cm−2 at 1.0 mA cm−2 with exceptional cyclic stability. The work reveals a facile but efficient synthesis approach of GO‐based materials to enhance the capacitive energy storage.

show abstract

Nanoporous carbons through direct carbonization of a zeolitic imidazolate framework for supercapacitor electrodes

Cited by 644 publications

References 34 publications

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

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

Hyperporous Carbons from Hypercrosslinked Polymers

Design of 3D Graphene‐Oxide Spheres and Their Derived Hierarchical Porous Structures for High Performance Supercapacitors

Contact Info

Product

Resources

About