Zeolitic imidazolate framework (ZIF-8) derived nanoporous carbon: the effect of carbonization temperature on the supercapacitor performance in an aqueous electrolyte

Young, Christine; Salunkhe, Rahul R.; Tang, Jing; Hu, Chi‐Chang; Shahabuddin, Mohammed; Yanmaz, E.; Hossain, Md. Shahriar A.; Kim, Jung Ho; Yamauchi, Yusuke

doi:10.1039/c6cp05555a

Cited by 225 publications

(101 citation statements)

References 43 publications

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“…To investigate difference in the structural characteristics of PCF and ZIF‐C materials, Raman spectra were compared in Figure a. The D band at ≈1340 cm −1 and G band at ≈1590 cm −1 in the Raman spectrum correspond to the disordered or incomplete graphitic structures and the vibration of the sp 2 hybridized carbon, respectively . The ratio of the D band to G band for PCF is I D / I G = 1.99 (calculated based on the integrated area), which is lower than ZIF‐C ( I D / I G = 2.33), implying higher degree of graphitization of the PCF sample.…”

Section: Resultsmentioning

confidence: 99%

Confined Pyrolysis of ZIF‐8 Polyhedrons Wrapped with Graphene Oxide Nanosheets to Prepare 3D Porous Carbon Heterostructures

et al. 2019

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Heterostructured materials are interesting because they may combine two or more material building blocks that together generate new types of heterointerfaces with unusual properties. Using them to construct large‐scale 3D frameworks further extends their utility in electrochemical applications because it exposes more interfaces and active sites. In this study, electrostatic interactions are used to wrap polyhedra particles of zeolitic imidazolate frameworks with graphene oxide (GO) nanosheets to prepare the composite structure. Pyrolyzing this structure generates a 3D porous carbon framework (PCF) composed of polyhedral‐shaped hollow carbon coated with reduced GO. The size of the polyhedral macropores can be adjusted from nanometer scale to micrometer scale. The PCFs generate a continuous network of heterostructured carbon with a large surface area and large pore volumes that are particularly useful as porous electrodes in lithium–sulfur batteries. The PCF/S composite electrode exhibits a high discharge capacity of 1151 mAh g−1 at 1 C and a low capacity decay of 0.035% per cycle after 650 cycles.

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Section: Resultsmentioning

confidence: 99%

Confined Pyrolysis of ZIF‐8 Polyhedrons Wrapped with Graphene Oxide Nanosheets to Prepare 3D Porous Carbon Heterostructures

et al. 2019

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“…The large-size NPC showed a higher capacitance value of 251 F g −1 at 5 mV s −1 scan rate than that of small-size NPC due to the fact that particle aggregation and strong interaction between the fine particles limited the ability of the electrolyte to diffuse inside the deep pore surfaces [53]. In addition, the effect of carbonization temperatures (from 700 to 1000°C) on ZIF-8 precursor was also evaluated by Yamauchi et al The results indicated that the S-900 (carbonization at 900°C) achieved the highest capacitance performance in aqueous electrolytes [178]. In order to develop multimodal porosity for enhancing capacitive performance and reducing transport resistance, Zhu et al [179] proposed a facile route for forming bimodal porosity in porous carbons, and the ZIF-8 was used as the precursor and the silica colloids as additional porogenes via further self-assembly.…”

Section: Metal-organic Framework-derived Carbonmentioning

confidence: 99%

Recent progress in carbon-based nanoarchitectures for advanced supercapacitors

Ran

Yang

Shao

2018

Adv Compos Hybrid Mater

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Supercapacitors, possessing high power densities, have been supposed to be one of the promising energy storage devices. Among various electrode materials of supercapacitors, carbon materials with porous nanostructure are considered as the emerging and promising candidates. This feature article reviewed the recent advances in different dimensional carbon-based nanoarchitectures for supercapacitors and particularly addressed the novel synthetic strategies to improve the electrochemical performances and corresponding theoretical foundations. The state-of-the-art progress was discussed, and diverse challenges for the electrochemical properties of carbon-based materials were propounded. Furthermore, perspectives for the design and assembly of advanced carbon-based nanoarchitectures for the supercapacitor electrode materials were highlighted.

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“…Thet wo intensive peaks observed around 1350 and 1580 cm À1 can be attributed to the sp 3 defective sites (D band) and all sp 2 -bonded pairs (G band), respectively.C ompared to previously reported carbon materials,t he I D /I G ratio in this study is significant low,s howing highly graphitic framework (Supporting Information, Table S2). [28] It is validated that the content of sp 2 -hybridized carbon is about 76 %. As shown in the sum spectra (Figure 3c), the atomic content of O is 8.1 %, which is lower than the reported resol-derived carbon.…”

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confidence: 95%

Confined Self‐Assembly in Two‐Dimensional Interlayer Space: Monolayered Mesoporous Carbon Nanosheets with In‐Plane Orderly Arranged Mesopores and a Highly Graphitized Framework

Wang

Ding

et al. 2018

Angewandte Chemie

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Although two-dimensional (2D) carbon materials are widely investigated, aw ell-defined 2D carbon nanosheet with an ordered mesostructure has rarely been realized. Monolayer-ordered mesoporous carbon nanosheets (OMCNS) were prepared through confinement assembly of resol and F127 in the interlayer of montmorillonite (MONT). The nanoscale distance of the interlayer space of MONT only allowthe assembly of resol and F127 in the same plane,leading to ordered mesopores perpendicular to carbon nanosheets,and favor the formation of sp 2 carbon, resulting in ahigh degree of graphitization. The mesopores on the carbon nanosheets providee fficient ion diffusion, and the high degree of graphitization provides af ast electron-transport route,e nabling OMCNS as excellent electrode materials for electric double layer capacitors.Layered materials are am ultiple and largely unexploited source of two-dimensional (2D) systems with unusual phys-ical properties,o utstanding electrical properties,a nd most importantly,u ltrahigh exposed surface area, and these features are important for aw ide range of applications. [1][2][3] Among these materials,carbon materials with 2D or pseudo-2D morphologies are of particular interest for applications such as catalysis,water/gas purification, or energy conversion/ storage,o wing to their intrinsic advantages of large specific surface area (SSA), excellent electrical conductivity,chemical inertness,a nd low cost. [4][5][6] However,t he applications of 2Dstructured carbon materials are mostly hampered by the severe aggregation, especially after processing into ac ompressed electrode,w hich cause limitations,n amely ion accessibility,diffusion, and mass transportation. [7,8] To address the aforementioned issues,m any efforts have been devoted to construct 2D carbon materials with designed structures to increase the ion-accessible surface area and to improve the ion transport efficiency. [9][10][11][12][13][14][15][16][17] Thecommonly used methods include preparing crumpled nanosheets or incorporating small dimensional nanoparticles within the nanosheets, which can generate interlayer space when being packed together; [9][10][11][12][13] however,t he curved interlayer spacer and the randomly distributed interlayer spacers will lead to acomplex and even blocked pathway for ion diffusion, reducing the ionaccessible surface area. Furthermore,the limitations of crossplane diffusivity of ions between different layers are not addressed, thus still restricting the power delivery.A nother popular strategy is to grow vertically oriented 2D nanosheets on the substrate; [14][15][16][17] although an enlarged interlayer spacing was constructed, the mass loading of 2D nanosheets per unit area is restricted, thus limiting overall charge-storage capacity.C onsequently,i ti ss till ag reat challenge to design appropriate carbon nanostructure which could provide efficient ion diffusion routes when being packed together.Zhao et al. reported at ype of 2D monolayer ordered mesoporous carbon (OMC) through controlled low c...

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Zeolitic imidazolate framework (ZIF-8) derived nanoporous carbon: the effect of carbonization temperature on the supercapacitor performance in an aqueous electrolyte

Cited by 225 publications

References 43 publications

Confined Pyrolysis of ZIF‐8 Polyhedrons Wrapped with Graphene Oxide Nanosheets to Prepare 3D Porous Carbon Heterostructures

Confined Pyrolysis of ZIF‐8 Polyhedrons Wrapped with Graphene Oxide Nanosheets to Prepare 3D Porous Carbon Heterostructures

Recent progress in carbon-based nanoarchitectures for advanced supercapacitors

Confined Self‐Assembly in Two‐Dimensional Interlayer Space: Monolayered Mesoporous Carbon Nanosheets with In‐Plane Orderly Arranged Mesopores and a Highly Graphitized Framework

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