Bonding VSe2 ultrafine nanocrystals on graphene toward advanced lithium-sulfur batteries

Tian, Wenzhi; Xi, Baojuan; Gu, Yu; Fu, Qiang; Feng, Zhenyu; Feng, Jun‐e

doi:10.1007/s12274-020-2909-3

Cited by 66 publications

(41 citation statements)

References 63 publications

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“…[39] The CNTs could shorten the ion diffusion path and accelerate axial electron transport of the electrodes; while porous structure is beneficial for the Na + to be embedded evenly from all directions and to maintain the stability of the electrode material. [4,40] In addition, there is no evidence for individual lumps of carbon without tubes or clusters of pure CNTs.…”

Section: Resultsmentioning

confidence: 99%

“…[ 39,40] Figure c and 3d reveal the morphology of HC‐SC by calcining PVA/ZIF‐67 composite at 1000 °C under Ar flux, in which the previous hard carbon holes were filled with numerous CNTs, and these CNTs may be produced by the conversion of organic ligand of ZIF‐67 catalyzed by nano‐cobalt during the high temperature carbonization process . The CNTs could shorten the ion diffusion path and accelerate axial electron transport of the electrodes; while porous structure is beneficial for the Na + to be embedded evenly from all directions and to maintain the stability of the electrode material . In addition, there is no evidence for individual lumps of carbon without tubes or clusters of pure CNTs.…”

Section: Resultsmentioning

confidence: 99%

“…However, the limited and unevenly distributed lithium resources make LIBs hardly afford to the increasing demand pressure. [4,5] Hence, it is urgent to explore the next generation of batteries for largescale use. Due to the global abundance and more affordability of sodium, sodium-ion batteries (SIBs) with analogue energy storage mechanism and electrochemical operation to LIBs are deemed to be a prospective alternative.…”

Section: Introductionmentioning

confidence: 99%

“…Lithium‐ion batteries (LIBs) have been applied diffusely in various domains. However, the limited and unevenly distributed lithium resources make LIBs hardly afford to the increasing demand pressure . Hence, it is urgent to explore the next generation of batteries for large‐scale use.…”

Section: Introductionmentioning

confidence: 99%

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A Promising Hard Carbon−Soft Carbon Composite Anode with Boosting Sodium Storage Performance

Xue

Gao

et al. 2020

ChemElectroChem

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Hard carbon anodes are the most promising candidates for sodium-ion batteries due to lower sodium-embedded platform and higher specific capacity. However, pure hard carbon carbons usually show very low initial coulombic efficiency, low electronic conductance, et al. Herein, hard carbon-soft carbon (HC-SC) composites composed of carbon nanotubes (CNTs) blooming on porous hard carbon, which were synthesized through thermal decomposition of zeolitic imidazolate framework-67 (ZIF-67) and polyvinyl alcohol (PVA) composite. This unique structure could greatly promote the sodium-ion diffusion and electron transport due to the increased electrode/ electrolyte contact area and enlarged pores. As expected, the HC-SC delivers a high capacity (306.8 mAh g À 1 at 500 mA g À 1), impressive cycling stability (256.8 mAh g À 1 after 1000 cycles) and enhanced rate performance (144.9 mAh g À 1 at 20 C), which are far superior to those of both individual hard carbon and soft carbon. This encouraging performance may benefit from the synergistic effect of the modified defect concentration and interlayer distance in hard carbon by soft carbon, as well as the unique hierarchical structure. This work provides an exemplary strategy to develop optimized carbon materials for sodium-ion batteries.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A Promising Hard Carbon−Soft Carbon Composite Anode with Boosting Sodium Storage Performance

Xue

Gao

et al. 2020

ChemElectroChem

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“…[ 22,33,34 ] Concurrent with the development of foregoing “traditional catalytic materials,” a series of budding catalytic materials also possess enormous potential for the facilitating LiPSs redox reaction in LSBs, including metal borides, metal phosphides, metal selenides, single atomic, and the introduction of defect engineering and we refer to them as “emerging catalytic materials” ( Figure 1 ). [ 14,35–39 ] In order to obtain prospective research progress for the LSBs, a pioneering overview about the state‐of‐the‐art advances of these emerging catalytic materials is present here.…”

Section: Introductionmentioning

confidence: 99%

Emerging Catalysts to Promote Kinetics of Lithium–Sulfur Batteries

Wang

Huang

et al. 2021

Advanced Energy Materials

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243

202

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Lithium–sulfur batteries (LSBs) with a high theoretical capacity of 1675 mAh g−1 hold promise in the realm of high‐energy‐density Li–metal batteries. To cope with the shuttle effect and sluggish transformation of soluble lithium polysulfides (LiPSs), varieties of traditional metal‐based materials (such as metal, metal oxides, metal sulfides, metal nitrides, and metal carbides) with unique catalytic activity for accelerating LiPSs redox have been exploited to fundamentally inhibit the shuttle effect and improve the performance of LSBs. Concurrently, some budding catalytic materials also possess enormous potential for facilitating LiPSs redox reaction in LSBs, including metal borides, metal phosphides, metal selenides, single atoms, and defect‐engineered materials. Here, recent advances in these emerging catalytic candidates as well as the evaluation methods and parameters for catalytic materials are comprehensively summarized for the first time. New insights are also given to aid in the design of high‐performance LSBs and satisfy the high expectation in the future, including the exposure of the active sites and adsorption‐catalysis synergy strategies. Finally, the current challenges and prospects for designing highly efficient catalytic materials are highlighted, aiming at providing guidance for configuring catalytic materials to make sure high‐energy and long‐life LSBs.

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Initiating VB‐Group Laminated NbS₂ Electromagnetic Wave Absorber toward Superior Absorption Bandwidth as Large as 6.48 GHz through Phase Engineering Modulation

Zhang

Cheng

Wang

et al. 2021

Adv Funct Materials

166

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VB-Group transition metal disulfides (TMDs) are considered excellent materials for electromagnetic wave (EMW) absorption because of their good conductivity and abundant active sites located at their edges and substrates, as compared with VIB-Group TMDs. Herein, for the first time, EMW absorbers based on VB-Group NbS 2 nanosheets by using a facile one-step solvothermal method are successfully prepared. The minimum reflection loss (RL min ) can reach up to 43.85 dB with an effective absorption bandwidth of 6.48 GHz (11.52-18.00 GHz). The remarkable EMW absorption performance can also be reflected in the tunable frequency bands (C-, X-, and Ku-bands), which is achieved by adjusting the contents of materials. Further more, the influence of the content of 2H-phase and 1T-phase in NbS 2 on the EMW absorption performance is systematically investigated. The hierarchical hollow-sphere structure of NbS 2 promotes dielectric loss and the multiple reflection and absorption of EMW, and enhances the impedance matching and synergistic attenuation ability. This work demonstrates that the bottleneck of effective absorbing frequency band of single-component dielectric EMW absorbing materials could be broken through, and paves a novel path towards developing broadband absorbing materials in EMW absorption.

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Bonding VSe2 ultrafine nanocrystals on graphene toward advanced lithium-sulfur batteries

Cited by 66 publications

References 63 publications

A Promising Hard Carbon−Soft Carbon Composite Anode with Boosting Sodium Storage Performance

A Promising Hard Carbon−Soft Carbon Composite Anode with Boosting Sodium Storage Performance

Emerging Catalysts to Promote Kinetics of Lithium–Sulfur Batteries

Initiating VB‐Group Laminated NbS₂ Electromagnetic Wave Absorber toward Superior Absorption Bandwidth as Large as 6.48 GHz through Phase Engineering Modulation

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Bonding VSe2 ultrafine nanocrystals on graphene toward advanced lithium-sulfur batteries

Cited by 66 publications

References 63 publications

A Promising Hard Carbon−Soft Carbon Composite Anode with Boosting Sodium Storage Performance

A Promising Hard Carbon−Soft Carbon Composite Anode with Boosting Sodium Storage Performance

Emerging Catalysts to Promote Kinetics of Lithium–Sulfur Batteries

Initiating VB‐Group Laminated NbS2 Electromagnetic Wave Absorber toward Superior Absorption Bandwidth as Large as 6.48 GHz through Phase Engineering Modulation

Contact Info

Product

Resources

About

Initiating VB‐Group Laminated NbS₂ Electromagnetic Wave Absorber toward Superior Absorption Bandwidth as Large as 6.48 GHz through Phase Engineering Modulation