Functionalized N-doped hollow graphitic carbon-nanotube/carbon -nanosphere composite

Li, Xuan; Wang, Manxi; Li, Ruiling; Li, Chuanping; He, Jiabo; Qiu, Min; Xiao, Liren; Wen, Zhenhai; Qian, Qingrong; Li, Xiaoyan; Chen, Qinghua; Wang, Ziqiang; Mai, Yiu‐Wing; Chen, Yuming

doi:10.1016/j.coco.2020.100578

Cited by 25 publications

(6 citation statements)

References 23 publications

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“…Such a superior Li-ion storage property of the SnO 2 @NC@MoS 2 /C electrode is not only better than the contrast samples but also superior to the relevant anode materials reported in the other literature (Table S2). It is well known that the architecture design is critical to improving the battery performance, , and in general, the cycling stability is associated with structural stability. , Thus, to explore the reasons of the excellent electrochemical stability, SEM, TEM, EDS spectrum, and EDS mapping were performed on the SnO 2 @NC@MoS 2 /C electrode after 100 cycles at 0.2 Ag –1 . SEM images (Figure ) and TEM image (Figure S12a) show that pristine morphologies are well maintained without any major structural damage.…”

Section: Resultsmentioning

confidence: 99%

Construction of Hierarchical SnO₂@NC@MoS₂/C Nanotubes for Ultrastable Lithium- and Sodium-Ion Batteries

et al. 2022

ACS Sustainable Chem. Eng.

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In this work, a novel hierarchical tubular structure (SnO 2 @NC@MoS 2 / C) has been designed and synthesized using MnO x nanowires as a sacrificing template for the hollow tube and successively wrapping a SnO 2 layer, nitrogen-doped carbon (NC) layer, and ultrathin MoS 2 nanosheets incorporating into a carbon layer. In such a particular structure, the conductivity of SnO 2 and MoS 2 has been obviously improved, and the large volume change caused by the lithium/sodium-ion (Li + /Na + ) intercalation/ deintercalation has also been effectively alleviated. Especially, due to the expansion of the spacing between MoS 2 layers caused by the outermost carbon derived from glucose, the shuttling of Li + /Na + between the layers becomes easier. Thanks to the advantages mentioned above, hierarchical hollow nanostructures feature the synergistic effects of different components, the SnO 2 @NC@MoS 2 /C nanocomposite displays an exceptional discharge capacity (980.9 mAh g −1 at 0.2 Ag −1 ) and long cycle stability (750 mAh g −1 at 1 Ag −1 for 450 cycles) when applied in lithium-ion batteries. Even at 2, 5, and 10 Ag −1 , the specific capacities still reach up to 672.7, 630.1, and 565 mAh g −1 after 500 cycles, respectively, which delivers an ultrastable highrate cycle performance. Meanwhile, it also achieves eminent capacity (479.3 mAh g −1 at 0.2 Ag −1 over 150 cycles), small capacity attenuation rate (0.06% per cycle after 2000 cycles at 1 Ag −1 ), and superior rate capacity (818.5, 691.6, 577.6, 506.3, 442.4, and 348.2 mAh g −1 at 0.1, 0.2, 0.5, 1, 2, and 5 Ag −1 , respectively) when the composite used for sodium-ion batteries.

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Section: Resultsmentioning

confidence: 99%

Construction of Hierarchical SnO₂@NC@MoS₂/C Nanotubes for Ultrastable Lithium- and Sodium-Ion Batteries

et al. 2022

ACS Sustainable Chem. Eng.

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“…The performance of solid-state electrolytes can be effectively improved through the structural design of the polymer matrix and inorganic filler. 25,26 In addition, nanomaterials with large specific surface areas and porosities provide fast Li-ion transport channels. The addition of different types of inorganic nanofillers to the polymer matrix can significantly increase its ionic conductivity, mechanical strength, and thermal stability.…”

Section: Introductionmentioning

confidence: 99%

Electrospinning techniques for inorganic–organic composite electrolytes of all-solid-state lithium metal batteries: a brief review

et al. 2023

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“…15,16 Notably, modulating the structure and composition of NFs or synthesizing sophisticated NFs can also be achieved by combining electrospinning with other techniques. [17][18][19][20][21][22] With the advance of nanomaterials, in-depth study of their structures and properties during synthesis and operation is of paramount importance to their practical applications. However, the current ex situ characterizations provide limited information.…”

Section: Introductionmentioning

confidence: 99%

“…Besides, electrospun 1D nanomaterials can be facilely assembled into two‐dimensional (2D)/three‐dimensional (3D) structures 15,16 . Notably, modulating the structure and composition of NFs or synthesizing sophisticated NFs can also be achieved by combining electrospinning with other techniques 17–22 …”

Section: Introductionmentioning

confidence: 99%

Electrospun advanced nanomaterials for in situ transmission electron microscopy: Progress and perspectives

Zhao,

Li,

et al. 2023

InfoMat

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Electrospun nanofibers (NFs) have shown excellent properties including high porosity, abundant active sites, controllable diameter, uniform and designable structure, high mechanical strength, and superior resistance to external destruction, which are ideal nanoreactors for in situ characterizations. Among various techniques, in situ transmission electron microscopy (TEM) has enabled operando observation at the atomic level due to its high temporal and spatial resolution combined with excellent sensitivity, which is of great importance for rational materials design and performance improvement. In this review, the basic knowledge of in situ TEM techniques and the advantages of electrospun nanoreactors for in situ TEM characterization are first introduced. The recent development in electrospun nanoreactors for studying the physical properties, structural evolution, phase transition, and formation mechanisms of materials using in situ TEM is then summarized. The electrochemical behaviors of carbon nanofibers (CNFs), metal/metal oxide NFs, and solid‐electrolyte interphase for different rechargeable batteries are highlighted. Finally, challenges faced by electrospun nanoreactors for in situ TEM characterization are discussed and potential solutions are proposed to advance this field.image

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Functionalized N-doped hollow graphitic carbon-nanotube/carbon -nanosphere composite

Cited by 25 publications

References 23 publications

Construction of Hierarchical SnO₂@NC@MoS₂/C Nanotubes for Ultrastable Lithium- and Sodium-Ion Batteries

Construction of Hierarchical SnO₂@NC@MoS₂/C Nanotubes for Ultrastable Lithium- and Sodium-Ion Batteries

Electrospinning techniques for inorganic–organic composite electrolytes of all-solid-state lithium metal batteries: a brief review

Electrospun advanced nanomaterials for in situ transmission electron microscopy: Progress and perspectives

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Functionalized N-doped hollow graphitic carbon-nanotube/carbon -nanosphere composite

Cited by 25 publications

References 23 publications

Construction of Hierarchical SnO2@NC@MoS2/C Nanotubes for Ultrastable Lithium- and Sodium-Ion Batteries

Construction of Hierarchical SnO2@NC@MoS2/C Nanotubes for Ultrastable Lithium- and Sodium-Ion Batteries

Electrospinning techniques for inorganic–organic composite electrolytes of all-solid-state lithium metal batteries: a brief review

Electrospun advanced nanomaterials for in situ transmission electron microscopy: Progress and perspectives

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Construction of Hierarchical SnO₂@NC@MoS₂/C Nanotubes for Ultrastable Lithium- and Sodium-Ion Batteries

Construction of Hierarchical SnO₂@NC@MoS₂/C Nanotubes for Ultrastable Lithium- and Sodium-Ion Batteries