MoS2 anchored carbon nitride based mesoporous material as a polysulfide barrier for high capacity lithium-sulfur battery

Angamuthu, Gnanavel; Babu, Dasari Bosu; Ramesha, K.; Rangarajan, Venkatesan

doi:10.1016/j.jelechem.2019.05.006

Cited by 25 publications

(13 citation statements)

References 66 publications

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“…Angamuthu et al. integrated CN with MoS 2 for sulfur confinement . CN and MoS 2 can provide abundant electrochemically active sites, while the cagelike structure of MoS 2 chemically restrains polysulfide migration.…”

Section: Structural Designmentioning

confidence: 58%

“…Angamuthu et al integrated CN with MoS 2 for sulfur confinement. [63] CN and MoS 2 can provide abundant electrochemically active sites, while the cagelike structure of MoS 2 chemically restrains polysulfidem igration. The prepared CN/MoS 2 materiald emonstrates an initial capacity of 1251 mA hg À1 at 0.5 Ca nd ar eversiblec apacity of 680 mA hg À1 after 200 cycles.…”

Section: Mos 2 /Carbon3ds Tructural Cathodesmentioning

confidence: 99%

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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 Designmentioning

confidence: 58%

Section: Mos 2 /Carbon3ds Tructural Cathodesmentioning

confidence: 99%

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

Cao

Lin

et al. 2019

ChemSusChem

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“…The HRTEM image (Figure 2g) displays a crystalline lattice fringe spacing of 0.68 nm, corresponding to the (002) facets of hexagonal MoS 2 . 39,40 The typical MoS 2 layer distance is 0.62−0.65 nm, which suggests that the introduction of defects seems to result in an expanded interlayer spacing. 41,42 The defect-rich nanosheet structure can offer sufficient exposed edge sites for immobilizing and accelerating the catalytic conversion of LiPSs.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Constructing Defect-Rich MoS₂/N-Doped Carbon Nanosheets for Catalytic Polysulfide Conversion in Lithium–Sulfur Batteries

Zhen

Guo

Shen

2020

ACS Sustainable Chem. Eng.

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Polysulfide dissolution is one of the inherent challenges in lithium−sulfur batteries (LSBs). The shuttle effect of soluble polysulfide species between the cathode and the anode can cause the loss of active materials and the attenuation of specific capacity in LSBs. Herein, the N-doped porous carbon (NC) nanosheets with uniformly anchored defect-rich MoS 2 nanosheets (MoS 2 /NC) were constructed by a simple and low-cost method. The NC nanosheets facilitate transfer of lithium ion and electron and localize polysulfides via the Li−N chemical bond. The defectrich MoS 2 nanosheets can be used as electrocatalysts to propel polysulfide conversion by abundant catalytic activity sites and thus control the shuttle effect as well as improve cycling performances of LSBs. Consequently, the defect-rich MoS 2 /NC composites as separator modification present a high specific capacity of 1021 mAh g −1 at 0.2 C after 100 cycles and superior long-term performances with enhanced specific capacities of 429 mAh g −1 with a low capacity fading rate of 0.027% per cycle at 5 C after 1000 cycles. The reasonable construct strategy of defect-rich MoS 2 /NC composites is effective in enhancing the electrochemical performances of LSBs and promoting their commercial applications. KEYWORDS: N-doped porous carbon, defect-rich MoS 2 , shuttle effect, electrocatalysis, polysulfides

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“…A redshift in the Mo-O band, from 743 to 766 cm -1 , occurred after adsorption, implying that Cd 2+ interacted with Mo-O-Mo during adsorption [48,49] and that was in accordance with the production of CdMoO 4 (Fig.5a). Because of the low content of CdS, no characteristic peak of Cd-S at around 630 cm -1 [50] was found and the peak of Mo-S (500 cm -1 ) [51] did not change noticeably after Cd 2+ loading. However, evidence from the XPS spectra suggested that Cd-S interaction also occurred during Cd 2+ removal.…”

Section: The Change Of Structure and Composition Of Mos/ocn-1mentioning

confidence: 92%

Enhancement of cadmium removal by oxygen-doped carbon nitride with molybdenum and sulphur hybridization

Wang

et al. 2019

Journal of Colloid and Interface Science

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MoS2 anchored carbon nitride based mesoporous material as a polysulfide barrier for high capacity lithium-sulfur battery

Cited by 25 publications

References 66 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

Constructing Defect-Rich MoS₂/N-Doped Carbon Nanosheets for Catalytic Polysulfide Conversion in Lithium–Sulfur Batteries

Enhancement of cadmium removal by oxygen-doped carbon nitride with molybdenum and sulphur hybridization

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MoS2 anchored carbon nitride based mesoporous material as a polysulfide barrier for high capacity lithium-sulfur battery

Cited by 25 publications

References 66 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

Constructing Defect-Rich MoS2/N-Doped Carbon Nanosheets for Catalytic Polysulfide Conversion in Lithium–Sulfur Batteries

Enhancement of cadmium removal by oxygen-doped carbon nitride with molybdenum and sulphur hybridization

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

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

Constructing Defect-Rich MoS₂/N-Doped Carbon Nanosheets for Catalytic Polysulfide Conversion in Lithium–Sulfur Batteries