Enabling immobilization and conversion of polysulfides through a nitrogen-doped carbon nanotubes/ultrathin MoS<sub>2</sub> nanosheet core–shell architecture for lithium–sulfur batteries

Yang, Wu; Yang, Wang; Dong, Liubing; Gao, Xiaochun; Wang, Guoxiu; Shao, Guangjie

doi:10.1039/c9ta03227d

Cited by 107 publications

(59 citation statements)

References 68 publications

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“…Yang et al. presented the synthesis of a core–shell architecture by combining hierarchical NCs with ultrathin MoS 2 nanosheets as a sulfur host for Li−S batteries . DFT calculations confirm the stronger chemisorption of NC and MoS 2 toward LiPSs than that of pure carbon matrix (Figure a–c).…”

Section: Structural Designsupporting

confidence: 84%

“…f) Schematic illustration of the polysulfide immobilization and conversion processes on the surface of NC@MoS 2 . g) Long‐term cycling performance of the S‐NC@MoS 2 cathode at 2 C. Reproduced with permission . Copyright 2019, The Royal Society of Chemistry.…”

Section: Structural Designsupporting

confidence: 84%

“…presented the synthesis of ac ore-shell architecture by combining hierarchical NCs with ultrathinM oS 2 nanosheets as as ulfur host for LiÀSb atteries. [58] DFT calculations confirm the stronger chemisorption of NC and MoS 2 toward LiPSs than that of pure carbon matrix ( Figure 5a-c). The electrochemical impedance spectroscopy (EIS) and CV results show improved redox reactionk inetics of LiPS transformationi nt he NC@MoS 2 electrode (Figure 5d ande ).…”

Section: Mos 2 /Carbon3ds Tructural Cathodesmentioning

confidence: 62%

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Two‐Dimensional MoS₂ for Li−S Batteries: Structural Design and Electronic Modulation

Cao

Lin

et al. 2019

ChemSusChem

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Two‐dimensional molybdenum disulfide (MoS2) nanosheets attract great interest for applications in lithium–sulfur (Li−S) batteries, due to their unique physical and chemical properties, which originate from diverse chemical compositions and unique electronic structures. In recent years, many efforts have been devoted to employing MoS2 as a polysulfide immobilizer and catalyst, functional separator, and Li‐metal protection for Li−S batteries through structural design and electronic modulation. A fundamental understanding of the interplay between structural features, electronic properties, and advanced electrochemical performance is crucial for providing valuable insights for the development of Li−S batteries. In this regard, recent advances in Li−S batteries with 2D MoS2 materials are summarized from the perspective of structural design and electronic modulation. Finally, future prospects and remaining challenges of MoS2 for Li−S batteries are highlighted.

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Section: Structural Designsupporting

confidence: 84%

Section: Structural Designsupporting

confidence: 84%

Section: Mos 2 /Carbon3ds Tructural Cathodesmentioning

confidence: 62%

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Two‐Dimensional MoS₂ for Li−S Batteries: Structural Design and Electronic Modulation

Cao

Lin

et al. 2019

ChemSusChem

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“…Furthermore, the strong interaction between metal sulfides and LiPSs can be generated via forming bonds with Li atom (Figure 4b) between S 8 and Li 2 S 4 on TiS 2 . [56] As a result, the capacity of Li 2 S precipitation on CP-NC@MoS 2 (141.6 mAh g −1 ) is much better when compared with that on CP (37.3 mAh g −1 ) and CP-NC (81.1 mAh g −1 ). The interfaces between CoS 2 and electrolyte exhibited strong affinity and catalytic activity for LiPSs, thus enhancing their conversion.…”

Section: Catalysis Superiority Synergymentioning

confidence: 94%

“…[56] As a result, the capacity of Li 2 S precipitation on CP-NC@MoS 2 (141.6 mAh g −1 ) is much better when compared with that on CP (37.3 mAh g −1 ) and CP-NC (81.1 mAh g −1 ). [56] Copyright 2019, Royal Society of Chemistry. Energy Mater.…”

Section: Catalysis Superiority Synergymentioning

confidence: 94%

Adsorption‐Catalysis Design in the Lithium‐Sulfur Battery

Zhang

Chen

Xue

et al. 2019

Advanced Energy Materials

330

247

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Lithium‐sulfur (Li‐S) batteries are one of the most promising next‐generation energy‐storage systems. Nevertheless, the sluggish sulfur redox and shuttle effect in Li‐S batteries are the major obstacles to their commercial application. Previous investigations on adsorption for LiPSs have made great progress but cannot restrain the shuttle effect. Catalysts can enhance the reaction kinetics, and then alleviate the shuttle effect. The synergistic relationship between adsorption and catalysis has become the hotspot for research into suppressing the shuttle effect and improving battery performance. Herein, the adsorption‐catalysis synergy in Li‐S batteries is reviewed, the adsorption‐catalysis designs are divided into four categories: adsorption‐catalysis for LiPSs aggregation, polythionate or thiosulfate generation, and sulfur radical formation, as well as other adsorption‐catalysis. Then advanced strategies, future perspectives, and challenges are proposed to aim at long‐life and high‐efficiency Li‐S batteries.

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Integrating Conductivity, Immobility, and Catalytic Ability into High‐N Carbon/Graphene Sheets as an Effective Sulfur Host

et al. 2019

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Lithium–sulfur (Li–S) batteries are considered to be one of the most promising candidate systems for next‐generation electrochemical energy storage. The major challenge of this system is the polysulfide shuttle, which results in poor cycling efficiency. In this work, a highly N‐doped carbon/graphene (NC/G) sheet is designed as a sulfur host, which combines the merits of abundant N active sites and high electrical conductivity to achieve in situ anchoring–conversion of lithium polysulfides (LiPSs). Such a host not only has strong binding with LiPSs but also promotes redox kinetics, which are revealed by both experimental investigations and theoretical studies. The sulfur cathode based on the NC/G host exhibits a high initial capacity of 1380 mA h g−1 and a superior cycle stability with a low capacity decay of 0.037% per cycle within 500 cycles at 2 C. Steady areal capacity with a high sulfur loading (5.6 mg cm−2) is also attained even without the addition of LiNO3 in the electrolyte. This work proposes and illustrates the importance of in situ anchoring–conversion of LiPSs, offering a new strategy to design multifunctional sulfur hosts for high‐performance Li–S batteries.

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Enabling immobilization and conversion of polysulfides through a nitrogen-doped carbon nanotubes/ultrathin MoS₂ nanosheet core–shell architecture for lithium–sulfur batteries

Abstract: A nitrogen-doped carbon nanotubes/ultrathin MoS2 nanosheet core–shell architecture can chemically immobilize lithium polysulfides and catalyze the conversion of polysulfides.

Cited by 107 publications

References 68 publications

Two‐Dimensional MoS₂ for Li−S Batteries: Structural Design and Electronic Modulation

Two‐Dimensional MoS₂ for Li−S Batteries: Structural Design and Electronic Modulation

Adsorption‐Catalysis Design in the Lithium‐Sulfur Battery

Integrating Conductivity, Immobility, and Catalytic Ability into High‐N Carbon/Graphene Sheets as an Effective Sulfur Host

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Enabling immobilization and conversion of polysulfides through a nitrogen-doped carbon nanotubes/ultrathin MoS2 nanosheet core–shell architecture for lithium–sulfur batteries

Abstract: A nitrogen-doped carbon nanotubes/ultrathin MoS2 nanosheet core–shell architecture can chemically immobilize lithium polysulfides and catalyze the conversion of polysulfides.

Cited by 107 publications

References 68 publications

Two‐Dimensional MoS2 for Li−S Batteries: Structural Design and Electronic Modulation

Two‐Dimensional MoS2 for Li−S Batteries: Structural Design and Electronic Modulation

Adsorption‐Catalysis Design in the Lithium‐Sulfur Battery

Integrating Conductivity, Immobility, and Catalytic Ability into High‐N Carbon/Graphene Sheets as an Effective Sulfur Host

Contact Info

Product

Resources

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Enabling immobilization and conversion of polysulfides through a nitrogen-doped carbon nanotubes/ultrathin MoS₂ nanosheet core–shell architecture for lithium–sulfur batteries

Two‐Dimensional MoS₂ for Li−S Batteries: Structural Design and Electronic Modulation

Two‐Dimensional MoS₂ for Li−S Batteries: Structural Design and Electronic Modulation