Hierarchical Tubular Structures Constructed by Carbon‐Coated SnO<sub>2</sub> Nanoplates for Highly Reversible Lithium Storage

Zhang, Lei; Zhang, Genqiang; Wu, Hao Bin; Yu, Le; Lou, Xiong Wen David

doi:10.1002/adma.201300105

Cited by 311 publications

(226 citation statements)

References 32 publications

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“…The resistance of diffusion (Zw) during the reaction process can be determined from the slope of the straight line 41, 42, 43. An equivalent circuit diagram of these electrodes is also shown in Figure 5a.…”

Section: Resultsmentioning

confidence: 99%

Graphene‐Nanowall‐Decorated Carbon Felt with Excellent Electrochemical Activity Toward VO₂⁺/VO²⁺ Couple for All Vanadium Redox Flow Battery

et al. 2015

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3D graphene‐nanowall‐decorated carbon felts (CF) are synthesized via an in situ microwave plasma enhanced chemical vapor deposition method and used as positive electrode for vanadium redox flow battery (VRFB). The carbon fibers in CF are successfully wrapped by vertically grown graphene nanowalls, which not only increase the electrode specific area, but also expose a high density of sharp graphene edges with good catalytic activities to the vanadium ions. As a result, the VRFB with this novel electrode shows three times higher reaction rate toward VO2 +/VO2+ redox couple and 11% increased energy efficiency over VRFB with an unmodified CF electrode. Moreover, this designed architecture shows excellent stability in the battery operation. After 100 charging–discharging cycles, the electrode not only shows no observable morphology change, it can also be reused in another battery and practical with the same performance. It is believed that this novel structure including the synthesis procedure will provide a new developing direction for the VRFB electrode.

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Section: Resultsmentioning

confidence: 99%

Graphene‐Nanowall‐Decorated Carbon Felt with Excellent Electrochemical Activity Toward VO₂⁺/VO²⁺ Couple for All Vanadium Redox Flow Battery

et al. 2015

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“…Correspondingly, coating or hybridizing nano-TMOs with conductive carbon nanomaterials provides an advanced avenue for enhancing the power and energy densities and initially improving the cycling stability. [32][33][34][35][36] The carbon matrix could act as not only a matrix to enhance the conductivity, but also as a buffer to accommodate the volume changes and prevent particle aggregation during repeated charging-discharging processes, significantly enhancing lithium insertion and extraction.…”

Section: Introductionmentioning

confidence: 99%

“…[34,35] Recent works have demonstrated that electrospinning is becoming a versatile, simple, cost-effective, and scalable strategy for producing 1D nanostructures, which possess many outstanding properties, including good mechanical strength, excellent flexibility, superior electrical conductivity, and large surface area to volume ratios. [37][38][39][40][41] Nevertheless, a relatively high carbon content resulting from the carbonization of as-electrospun polymers and lack of sufficient porosity could block the diffusion paths of the electrolytes and ions during charge/discharge processes, leading to decreased power and energy.…”

Section: Introductionmentioning

confidence: 99%

General Synthesis of Transition Metal Oxide Ultrafine Nanoparticles Embedded in Hierarchically Porous Carbon Nanofibers as Advanced Electrodes for Lithium Storage

Xia

Zhang

Fang

et al. 2016

Adv Funct Materials

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X. (2016). General synthesis of transition metal oxide ultrafine nanoparticles embedded in hierarchically porous carbon nanofibers as advanced electrodes for lithium storage. Advanced Functional Materials, 26 (34),[6188][6189][6190][6191][6192][6193][6194][6195][6196] General synthesis of transition metal oxide ultrafine nanoparticles embedded in hierarchically porous carbon nanofibers as advanced electrodes for lithium storage AbstractA unique general, large-scale, simple, and cost-effective strategy, i.e., foaming-assisted electrospinning, for fabricating various transition metal oxides into ultrafine nanoparticles (TMOs UNPs) that are uniformly embedded in hierarchically porous carbon nanofibers (HPCNFs) has been developed. Taking advantage of the strong repulsive forces of metal azides as the pore generator during carbonization, the formation of uniform TMOs UNPs with homogeneous distribution and HPCNFs is simultaneously implemented. The combination of uniform ultrasmall TMOs UNPs with homogeneous distribution and hierarchically porous carbon nanofibers with interconnected nanostructure can effectively avoid the aggregation, dissolution, and pulverization of TMOs, promote the rapid 3D transport of both Li ions and electrons throughout the whole electrode, and enhance the electrical conductivity and structural integrity of the electrode. As a result, when evaluated as binder-free anode materials in Li-ion batteries, they displayed extraordinary electrochemical properties with outstanding reversible capacity, excellent capacity retention, high Coulombic efficiency, good rate capability, and superior cycling performance at high rates. More importantly, the present work opens up a wide horizon for the fabrication of a wide range of ultrasmall metal/metal oxides distributed in 1D porous carbon structures, leading to advanced performance and enabling their great potential for promising largescale applications. Disciplines Engineering | Physical Sciences and Mathematics Publication DetailsXia, G., Zhang, L., Fang, F., Sun, D., Guo, Z., Liu, H. & Yu, X. (2016) A unique general, large-scale, simple, and cost-effective strategy, i.e., foaming-assisted electrospinning, for fabricating various transition metal oxides into ultrafine nanoparticles (TMOs UNPs) that are uniformly embedded in hierarchically porous carbon nanofibers (HPCNFs) has been developed. Taking advantage of the strong repulsive forces of metal azides as the pore generator during carbonization, the formation of uniform TMOs UNPs with homogeneous distribution and HPCNFs was simultaneously implemented. The combination of uniform ultra-small TMOs UNPs with homogeneous distribution and hierarchically porous carbon nanofibers with interconnected nanostructure could effectively avoid the aggregation, dissolution, and pulverization of TMOs, promote the rapid three-dimensional transport of both Li ions and electrons throughout the whole electrode, and enhance the electrical conductivity and structural integrity of the electrode. As a result, when evaluated as ...

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“…They also used the CNFs as templates to prepare carbon-coated SnO 2 nanotubes, [66] CNF@MnO, CNF@CoMn 2 O 4 nanocables, [67] NiCo 2 O 4 nanorods and ultrathin nanosheets on CNFs. [68] It can be seen that our CNFs gels play important roles in various applications.…”

Section: Template-directed Assembly Methodsmentioning

confidence: 99%

Macroscopic‐Scale Three‐Dimensional Carbon Nanofiber Architectures for Electrochemical Energy Storage Devices

Chen

Feng

Liang

et al. 2017

Advanced Energy Materials

162

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Therefore, it is necessary to develop highperformance energy storage devices for facilitating the effective utilization of intermittent renewable energy sources. [7][8][9] Among varieties of electrochemical energy storage devices, supercapacitors (known as electrochemical capacitors) [10,11] and some rechargeable batteries (lithium-ion batteries (LIBs), lithiumsulfur (Li-S) batteries, and metal-O 2 batteries) [12][13][14][15] are at the frontier, because they can transport high power and store high energy. Nowadays, they play an indispensable role in our daily life by powering numerous portable electronic devices (e.g., cell phones and laptops), hybrid electric vehicles, and large-scale electrical grids. [16][17][18][19] It is well accepted that the performance of energy storage devices mainly depended on their electrode materials. [20,21] Owing to the advantages of large surface area, light weight, good electrical conductivity, and high thermal/ chemical stability, carbon materials have been considered as the most important electrode materials of supercapacitors and rechargeable batteries [8,20,21] Hence, various nanostructured carbons, such as carbon/graphene quantum dots, [22,23] carbon nanofiber (CNFs), [16,24] carbon nanotubes (CNTs), [13,25] graphene [26][27][28][29][30][31][32] carbon nanosheets, [33,34] 3D carbon nanostructures, [35][36][37] and porous carbon, [38,39] have gained great attention. Among these materials, 3D carbon nanomaterials have some advantages. The interlinked architecture not only shortens transport distances for ions in the well-interconnected wall structure, but also provides a continuous pathway endowing for the fast electron transport. [40] Moreover, the structural interconnectivities guarantee higher electrical conductivity and better mechanical stability. [36,41] Thereby, the design and fabrication of various 3D carbonbased nanostructures, including carbon nanotube networks, graphene gels, graphene foams, and 3D CNFs, have been intensively investigated.Over the past few years, there are many reviews summarizing the progress of fabricating 3D carbon-based nanomaterials. For example, Schneider et al. overviewed the recent advance in the synthesis of 3D arranged carbon nanotube architectures. [42] Li et al. reviewed the carbon-based 3D nanostructures for supercapacitors. [36] Cao and Gui et al. comprehensively reviewed the recent progress in synthesis, properties, and energy applications of CNT sponges, aerogels, and hierarchical composites. [43] The development of high-performance electrochemical energy storage devices is critical for addressing energy crises and environmental pollution.

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Hierarchical Tubular Structures Constructed by Carbon‐Coated SnO₂ Nanoplates for Highly Reversible Lithium Storage

Cited by 311 publications

References 32 publications

Graphene‐Nanowall‐Decorated Carbon Felt with Excellent Electrochemical Activity Toward VO₂⁺/VO²⁺ Couple for All Vanadium Redox Flow Battery

Graphene‐Nanowall‐Decorated Carbon Felt with Excellent Electrochemical Activity Toward VO₂⁺/VO²⁺ Couple for All Vanadium Redox Flow Battery

General Synthesis of Transition Metal Oxide Ultrafine Nanoparticles Embedded in Hierarchically Porous Carbon Nanofibers as Advanced Electrodes for Lithium Storage

Macroscopic‐Scale Three‐Dimensional Carbon Nanofiber Architectures for Electrochemical Energy Storage Devices

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Hierarchical Tubular Structures Constructed by Carbon‐Coated SnO2 Nanoplates for Highly Reversible Lithium Storage

Cited by 311 publications

References 32 publications

Graphene‐Nanowall‐Decorated Carbon Felt with Excellent Electrochemical Activity Toward VO2+/VO2+ Couple for All Vanadium Redox Flow Battery

Graphene‐Nanowall‐Decorated Carbon Felt with Excellent Electrochemical Activity Toward VO2+/VO2+ Couple for All Vanadium Redox Flow Battery

General Synthesis of Transition Metal Oxide Ultrafine Nanoparticles Embedded in Hierarchically Porous Carbon Nanofibers as Advanced Electrodes for Lithium Storage

Macroscopic‐Scale Three‐Dimensional Carbon Nanofiber Architectures for Electrochemical Energy Storage Devices

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Product

Resources

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Hierarchical Tubular Structures Constructed by Carbon‐Coated SnO₂ Nanoplates for Highly Reversible Lithium Storage

Graphene‐Nanowall‐Decorated Carbon Felt with Excellent Electrochemical Activity Toward VO₂⁺/VO²⁺ Couple for All Vanadium Redox Flow Battery

Graphene‐Nanowall‐Decorated Carbon Felt with Excellent Electrochemical Activity Toward VO₂⁺/VO²⁺ Couple for All Vanadium Redox Flow Battery