Binder-free network-enabled MoS2-PPY-rGO ternary electrode for high capacity and excellent stability of lithium storage

Xie, Dong; Wang, D.H.; Tang, Wangjia; Xia, Xinhui; Zhang, Y.J.; Wang, X.L.; Gu, C.D.; Tu, Jiangping

doi:10.1016/j.jpowsour.2016.01.024

Cited by 89 publications

(34 citation statements)

References 62 publications

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“…The vacancies and defects introduced by the nitrogen doping will improve the conductivity of the electrode and thus enhance the reversible capacity. [40,54,55] Ta king the above results together,t hese discharge process in the first cycle can be expressed by Equations (1) and (2): Figure 4a,b shows the CV curves of pristine MoSe 2 and MoSe 2 /N-C microspheres at a scanningr ate of 0.01 mV s À1 overt he potential range of 0.01-3.0 V( vs. Li + /Li)f or the first three cycles.…”

Section: Resultssupporting

confidence: 86%

“…According to the XPS measurement, the Ne lement content in MoSe 2 /N-C microspheres is about 1.1 wt %. [52][53][54][55] Note that two cathodicp eaks disappear in the following cycles, indicating irreversibility in the conversion of MoSe 2 into Li 2 Se and Mo. The vacancies and defects introduced by the nitrogen doping will improve the conductivity of the electrode and thus enhance the reversible capacity.…”

Section: Resultsmentioning

confidence: 77%

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Construction of Nitrogen‐Doped Carbon‐Coated MoSe₂ Microspheres with Enhanced Performance for Lithium Storage

Tang

Xie

Shen

et al. 2017

Chemistry A European J

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Exploring advanced anode materials with highly reversible capacity have gained great interests for large-scale lithium storage. A facile two-step method is developed to synthesize nitrogen-doped carbon coated MoSe microspheres via hydrothermal plus thermal polymerization. The MoSe microspheres composed of interconnected nanoflakes are homogeneously coated by a thin nitrogen-doped carbon (N-C) layer. As an anode for lithium ion batteries, the MoSe /N-C composite shows better reversibility, smaller polarization, and higher electrochemical reactivity as compared to the unmodified MoSe microspheres. The MoSe /N-C electrode delivers a high specific capacity of 698 mAh g after 100 cycles at a current density of 100 mA g and good high rate performance (471 mAh g at a high current density of 2000 mA g ). The improved electrochemical performance is attributed to the conductive N-C coating and hierarchical microsphere structure with fast ion/electron transfer characteristics.

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Section: Resultssupporting

confidence: 86%

Section: Resultsmentioning

confidence: 77%

Construction of Nitrogen‐Doped Carbon‐Coated MoSe₂ Microspheres with Enhanced Performance for Lithium Storage

Tang

Xie

Shen

et al. 2017

Chemistry A European J

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“…[13][14][15][16][17] Unfortunately,c onsiderable capacity fading caused by its intrinsic low electronic conductivity,a ggregation,a nd pulverization on extended cyclingcannotbeavoided by mere nanostructure engineering. Thus,a nother strategy of integrating nanostructured MoS 2 with highly conductive materials, such as graphene, [18][19][20] amorphous carbon, [21,22] carbon nanotubes (CNT), [23,24] and conductingp olymers, [25][26][27][28] has been proposed to solve the abovementioned problems. Besides the advantages of nanostructured MoS 2 ,t he mechanicallys table and electronically conductive carbon component serving as ac onductive skeleton in the hybrid configuration can effectively enhancet he conductivity of the electrode, buffer the volume change,a nd thus resulti n improved cycling performance and rate capability.…”

Section: Introductionmentioning

confidence: 99%

Few‐Layer MoS₂ Nanosheets Encapsulated in N‐Doped Carbon Hollow Spheres as Long‐Life Anode Materials for Lithium‐Ion Batteries

Wang

et al. 2019

Chemistry A European J

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Two‐dimensional molybdenum disulfide (MoS2) has been recognized as a promising anode material for lithium‐ion batteries (LIBs) due to its high theoretical capacity, but its rapid capacity decay owing to poor conductivity, structure pulverization, and polysulfide dissolution presents significant challenges in practical applications. Herein, triple‐layered hollow spheres in which MoS2 nanosheets are fully encapsulated between inner carbon and outer nitrogen‐doped carbon (NC) were fabricated. Such an architecture provides high conductivity and efficient lithium‐ion transfer. Moreover, the NC shell prevents aggregation and exfoliation of MoS2 nanosheets and thus maintains the integrity of the nanostructure during the charge/discharge process. As anode materials for LIBs, the C@MoS2@NC hollow spheres deliver a high reversible capacity (747 mA h g−1 after 100 cycles at 100 mA g−1) and excellent long‐cycle performance (650 mA h g−1 after 1000 cycles at 1.0 A g−1), which confirm its potential for high‐performance LIBs.

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“…Specifically, in the first cycle, there are two cathodic peaks appearing at about 1.5 V and 0.35 V. The broad peak at about 1.5 V corresponds to Li + intercalation into the layered structure of the MoS2 to form LixMoS2. The 0.35 V peak is attributed to the further conversion reaction from LixMoS2 into metallic Mo and Li2S [18,31,38]. In the reverse anodic scan, the oxidation peaks at 1.8 V and 2.3 V are associated with the stepwise oxidation of Mo into Mo 4+ /Mo 6+ and the oxidation of Li2S into sulfur or polysulfides, respectively [39].…”

Section: Resultsmentioning

confidence: 99%

Coaxial MoS<sub>2</sub>@carbon Hybrid Fibers: A Low-Cost Anode Material for High-Performance Li-Ion Batteries

Zhou¹,

Wang²,

Liu³

et al. 2017

Preprint

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Abstract:A low-cost bio-mass-derived carbon substrate has been employed to synthesize MoS 2 @carbon composites through a hydrothermal method. Carbon fibers derived from natural cotton provide a three-dimensional and open framework for the uniform growth of MoS 2 nanosheets, thus hierarchically constructing coaxial architecture. The unique structure could synergistically benefit fast Li-ion and electron transport from the conductive carbon scaffold and porous MoS 2 nanostructures. As a result, the MoS 2 @carbon composites-when serving as anodes for Li-ion batteries-exhibit a high reversible specific capacity of 820 mAh·g −1 , high-rate capability (457 mAh·g −1 at 2 A·g −1 ), and excellent cycling stability. The use of bio-mass-derived carbon makes the MoS 2 @carbon composites low-cost and promising anode materials for high-performance Li-ion batteries.

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Binder-free network-enabled MoS2-PPY-rGO ternary electrode for high capacity and excellent stability of lithium storage

Cited by 89 publications

References 62 publications

Construction of Nitrogen‐Doped Carbon‐Coated MoSe₂ Microspheres with Enhanced Performance for Lithium Storage

Construction of Nitrogen‐Doped Carbon‐Coated MoSe₂ Microspheres with Enhanced Performance for Lithium Storage

Few‐Layer MoS₂ Nanosheets Encapsulated in N‐Doped Carbon Hollow Spheres as Long‐Life Anode Materials for Lithium‐Ion Batteries

Coaxial MoS<sub>2</sub>@carbon Hybrid Fibers: A Low-Cost Anode Material for High-Performance Li-Ion Batteries

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Binder-free network-enabled MoS2-PPY-rGO ternary electrode for high capacity and excellent stability of lithium storage

Cited by 89 publications

References 62 publications

Construction of Nitrogen‐Doped Carbon‐Coated MoSe2 Microspheres with Enhanced Performance for Lithium Storage

Construction of Nitrogen‐Doped Carbon‐Coated MoSe2 Microspheres with Enhanced Performance for Lithium Storage

Few‐Layer MoS2 Nanosheets Encapsulated in N‐Doped Carbon Hollow Spheres as Long‐Life Anode Materials for Lithium‐Ion Batteries

Coaxial MoS<sub>2</sub>@carbon Hybrid Fibers: A Low-Cost Anode Material for High-Performance Li-Ion Batteries

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Product

Resources

About

Construction of Nitrogen‐Doped Carbon‐Coated MoSe₂ Microspheres with Enhanced Performance for Lithium Storage

Construction of Nitrogen‐Doped Carbon‐Coated MoSe₂ Microspheres with Enhanced Performance for Lithium Storage

Few‐Layer MoS₂ Nanosheets Encapsulated in N‐Doped Carbon Hollow Spheres as Long‐Life Anode Materials for Lithium‐Ion Batteries