Hierarchical Tubular Structures Composed of Co<sub>3</sub>O<sub>4</sub> Hollow Nanoparticles and Carbon Nanotubes for Lithium Storage

Chen, Yu Ming; Yu, Le; Lou, Xiong Wen David

doi:10.1002/anie.201600133

Cited by 428 publications

(186 citation statements)

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“…To improve the electrical conductivity and structural stability of MOF derivatives, we developed a preparation method for GO-wrapped Mo-MOF (GO/Mo-MOF) rod through a simple mixing process of Mo-MOF and GO nanosheet. [244] TEM images reveals the microtubes are mainly composed of hollow Co 3 O 4 NPs with size of 10-20 nm and CNTs with inner diameter of about 3 nm (Figure 13e-g). [73] LD MOF derivatives can be also obtained by deposition of MOFs on certain substrates, which not only avoids agglomeration of the generated active components during calcination, but also endows MOF derivatives with new functions.…”

Section: Synthesis Of Ld Mof Derivativesmentioning

confidence: 99%

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Structural Engineering of Low‐Dimensional Metal–Organic Frameworks: Synthesis, Properties, and Applications

et al. 2019

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Low‐dimensional metal–organic frameworks (LD MOFs) have attracted increasing attention in recent years, which successfully combine the unique properties of MOFs, e.g., large surface area, tailorable structure, and uniform cavity, with the distinctive physical and chemical properties of LD nanomaterials, e.g., high aspect ratio, abundant accessible active sites, and flexibility. Significant progress has been made in the morphological and structural regulation of LD MOFs in recent years. It is still of great significance to further explore the synthetic principles and dimensional‐dependent properties of LD MOFs. In this review, recent progress in the synthesis of LD MOF‐based materials and their applications are summarized, with an emphasis on the distinctive advantages of LD MOFs over their bulk counterparties. First, the unique physical and chemical properties of LD MOF‐based materials are briefly introduced. Synthetic strategies of various LD MOFs, including 1D MOFs, 2D MOFs, and LD MOF‐based composites, as well as their derivatives, are then summarized. Furthermore, the potential applications of LD MOF‐based materials in catalysis, energy storage, gas adsorption and separation, and sensing are introduced. Finally, challenges and opportunities of this fascinating research field are proposed.

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Section: Synthesis Of Ld Mof Derivativesmentioning

confidence: 99%

“…a) Schematic illustration of synthetic process for the rod-like rGO/MoO 3 composite. Reproduced with permission [244]. Reproduced with permission [73].…”

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confidence: 99%

Structural Engineering of Low‐Dimensional Metal–Organic Frameworks: Synthesis, Properties, and Applications

et al. 2019

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“…[122][123][124][125] To overcome critical challenges for commercialization, the development of high-performance electrode materials is a key toward fundamental advances in higher efficiency, better durability, and lower cost. [122][123][124][125] To overcome critical challenges for commercialization, the development of high-performance electrode materials is a key toward fundamental advances in higher efficiency, better durability, and lower cost.…”

Section: Electrochemical Energy Storage and Conversionmentioning

confidence: 99%

“…[122][123][124][125] To overcome critical challenges for commercialization, the development of high-performance electrode materials is a key toward fundamental advances in higher efficiency, better durability, and lower cost. Chen et al [124] reported the preparation of hierarchical microtubular structures composed of Co 3 O 4 hollow nanoparticles and carbon nanotubes for LIB, based on the heat treatment of ZIF-67-PAN nanofibers as template. For example, Park et al [126] reported a novel carbonized MOF nanofiber electrode for lithium-selenium (Li-Se) batteries, which was fabricated by the carbonization of ZIF-8/PAN nanofibers followed by subsequent chemical activation.…”

Section: Electrochemical Energy Storage and Conversionmentioning

confidence: 99%

Electrospinning of Metal–Organic Frameworks for Energy and Environmental Applications

2019

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organic linkers with a periodic, nanoscaled structure and ultrahigh surface areas. With their tunable pore/cage sizes, flexible skeleton, and large surface-to-volume ratio, [13][14][15][16][17][18][19] MOFs have a large potential for a wide range of applications, including gas storage and separation, rechargeable batteries, supercapacitors, solar cells, nanoreactors, heterogeneous catalysis, or drug delivery. [20][21][22][23][24][25][26][27] Recently, significant efforts have been devoted to the design and synthesis of new MOFs structures and the investigation of their physical or chemical properties. MOFs are generally prepared as bulk form through traditional hydrothermal or solvothermal synthesis. [28][29][30][31] In order to expand the application range, suitable pathways for the structuring of MOF powders into a functional architecture or devices are highly desirable.Currently, intensive efforts are focusing on the structuring of MOFs at the mesoscopic/macroscopic scale for the use as coatings, membranes, or sophisticated architectures in specific devices and applications. [32][33][34][35] A major difference in the structuring of MOFs into complex shapes compared to inorganic microporous materials, such as zeolites or silica, is the fact that most inorganic binders cannot be used for MOFs as these binders usually require heat treatment. The intrinsic fragility of MOFs needs to be considered which is related to the inorganic/organic hybrid character of this class of materials and the resulting limited thermal and mechanical stability. Alternatively, a more effective way to structure MOFs is the combination with polymer materials. The polymer which acts as a binder improves the mechanical flexibility and ensures chemical stability. Numerous methods have been developed for structuring MOF-polymer compositions including hard or soft templates, spin-or dip-coating, spray-drying, printing, or lithography approaches. [36][37][38] The integration of MOFs into a polymer matrix can result in poor MOF-polymer dispersion and compatibility issues owing to the different physical and chemical properties for the two kinds of materials and this is a challenge in some applications, e.g., in MOF-based mixed matrix membranes for gas separation. [39][40][41][42] The poor interfacial compatibility would lead to agglomeration of MOF particles, causing the formation of nonselective voids between the MOFs particles and the polymer.Electrospinning is a fabrication method to produce continuous ultrafine fibers with diameters in the range of a few tens of nanometers to a few micrometers in the form of nonwoven mats, yarns, etc. The mechanism of electrospinning is based Herein, recent developments of metal-organic frameworks (MOFs) structured into nanofibers by electrospinning are summarized, including the fabrication, post-treatment via pyrolysis, properties, and use of the resulting MOF nanofiber architectures. The fabrication and post-treatment of the MOF nanofiber architectures are described systematically by two routes: i) the dire...

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“…[1][2][3] The rational design of porous architectures with hierarchical and interconnected pore networks is always strongly considered by scientific community. [4][5][6][7] In parallel with the microporous (pore size ≤ 2 nm) and mesoporous (2 nm ≤ pore size ≤ 50 nm) materials, macroporous (50 nm ≤ pore size) materials emerge and hold tremendous potentials due to their significant advantages with interconnected frameworks offering improved structural stability, as well as large channels for accelerated mass mobilization and accessibility advantageous over micro/mesoporous materials. [8] In addition, many electrochemical energy storage applications require an open cellular structure with a reasonable combination of hierarchical pore size and distribution, of which the macropores work together with mesopores and micropores to accelerate transport mass (e.g., chemicals and electrolyte), thus highlighting the necessity and importance of macropores in a porous hierarchy.…”

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confidence: 99%

Popcorn Inspired Porous Macrocellular Carbon: Rapid Puffing Fabrication from Rice and Its Applications in Lithium–Sulfur Batteries

Zhong

Xia

Deng

et al. 2017

Advanced Energy Materials

387

198

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Porous materials have been thriving as promising candidates for vast applications in current electrochemical energy storage field. [1][2][3] The rational design of porous architectures with hierarchical and interconnected pore networks is always strongly considered by scientific community. [4][5][6][7] In parallel with the microporous (pore size ≤ 2 nm) and mesoporous (2 nm ≤ pore size ≤ 50 nm) materials, macroporous (50 nm ≤ pore size) materials emerge and hold tremendous potentials due to their significant advantages with interconnected frameworks offering improved structural stability, as well as large channels for accelerated mass mobilization and accessibility advantageous over micro/mesoporous materials. [8] In addition, many electrochemical energy storage applications require an open cellular structure with a reasonable combination of hierarchical pore size and distribution, of which the macropores work together with mesopores and micropores to accelerate transport mass (e.g., chemicals and electrolyte), thus highlighting the necessity and importance of macropores in a porous hierarchy. [9] Porous macrocellular carbon, one member of macroporous material family, is of particularly great interest due to their excellent chemical, mechanical, and thermal stability coupled with good conductivity and high surface area. Thus, various carbonaceous porous materials (e.g., 3D rGO, [10] porous graphene, [11][12][13] carbon nanorods, [14] carbon nanotube networks, [15] microporous carbon, [16] hierarchical porous carbon, [17] biomass derived carbon, [18][19][20][21] and their hybrids) [22][23][24] are endowed with a wide range of applications in lithium ion batteries, [25] sodium ion batteries, [26] and supercapacitors. [27] Diverse techniques have been developed to fabricate macroporous carbon materials including template, [27] suspension, [28] microfluidics, [29] membrane/microchannel emulsification, [9] and seeded emulsion polymerization, [30] etc. However, such methodologies are tedious, requiring multiple synthetic steps, caustic chemical treatments, and long curing times. Therefore, it is with great interest to develop facile approaches for large-scale construction of macroporous materials.Puffing process has been extensively accepted to produce 3D edible and degradable foam from starch-based materials (e.g., (2 of 8)rice, corn, wheat, potato). [31] As a typical puffing method, the instantaneous puffing (IP) involving compression and instantaneous release processes is widely accepted for popcorn fabrication. In general, the grains are first compressed in a heated and sealed container. Then, the starch-containing feedstocks are puffed/expanded in a flash by instantaneous release of clamping force of the sealed container at a high temperature of ≈200-300 °C and a large pressure of 0.5-1.5 MPa. The bulk starch-containing feedstocks are instantaneously transformed into expanded 3D porous macrocellular materials with volume and surface area increased by dozens of times through the facile IP process. This technolog...

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Hierarchical Tubular Structures Composed of Co₃O₄ Hollow Nanoparticles and Carbon Nanotubes for Lithium Storage

Cited by 428 publications

References 46 publications

Structural Engineering of Low‐Dimensional Metal–Organic Frameworks: Synthesis, Properties, and Applications

Structural Engineering of Low‐Dimensional Metal–Organic Frameworks: Synthesis, Properties, and Applications

Electrospinning of Metal–Organic Frameworks for Energy and Environmental Applications

Popcorn Inspired Porous Macrocellular Carbon: Rapid Puffing Fabrication from Rice and Its Applications in Lithium–Sulfur Batteries

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Hierarchical Tubular Structures Composed of Co3O4 Hollow Nanoparticles and Carbon Nanotubes for Lithium Storage

Cited by 428 publications

References 46 publications

Structural Engineering of Low‐Dimensional Metal–Organic Frameworks: Synthesis, Properties, and Applications

Structural Engineering of Low‐Dimensional Metal–Organic Frameworks: Synthesis, Properties, and Applications

Electrospinning of Metal–Organic Frameworks for Energy and Environmental Applications

Popcorn Inspired Porous Macrocellular Carbon: Rapid Puffing Fabrication from Rice and Its Applications in Lithium–Sulfur Batteries

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Hierarchical Tubular Structures Composed of Co₃O₄ Hollow Nanoparticles and Carbon Nanotubes for Lithium Storage