3D Nanostructured Molybdenum Diselenide/Graphene Foam as Anodes for Long-Cycle Life Lithium-ion Batteries

Yao, Jun; Liu, Borui; Özden, Şehmus; Wu, Jingjie; Yang, Shubin; Rodrigues, Marco‐Tulio F.; Kalaga, Kaushik; Dong, Pei; Xiao, Peng; Zhang, Yunhuai; Vajtai, Róbert; Ajayan, Pulickel M.

doi:10.1016/j.electacta.2015.06.138

Cited by 111 publications

(70 citation statements)

References 38 publications

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“…Coupling with electrically conductive carbon is also an effective method to improve the electrochemical performance of MoSe 2 ‐based materials, in which the carbon component not only facilitates the charge transfer but also provides enough space for buffering the volume expansion and prohibit the aggregation . To date, a large number of MoSe 2 /C composites have been investigated as anodes for SIBs, such as MoSe 2 nanosheets coupled with hollow carbon spheres, multi‐walled carbon nanotubes/nanofibers and reduced graphene oxide (rGO) composites . However, the synthetic processes of those composites are tedious, and involve the preliminary synthesis of carbon material and subsequent combination of MoSe 2 with carbon matrix.…”

Section: Introductionmentioning

confidence: 99%

Flower‐like MoSe₂/C Composite with Expanded (0 0 2) Planes of Few‐layer MoSe₂ as the Anode for High‐Performance Sodium‐Ion Batteries

Lai

et al. 2017

Chemistry A European J

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Sodium-ion batteries (SIBs) have caught considerable attention in last few years owing to the abundance of sodium in comparison to lithium. The commercial graphite anode is demonstrated unsuitable as an anode material for SIBs due to the larger radius of Na ions, whereas the transition metal dichalcogenides (TMDs) show great potential as anodes for SIBs because of their high achievable capacity. The sluggish kinetics, large volume expansion, and aggregation of those materials however results in severe decay of the electrochemical performance. In this work, a flower-like MoSe /C composite is synthesized with ethylenediamine and cassava starch (denoted as MoSe /C ) and designed based on these principles: 1) expand the d-spacing of (0 0 2) planes of MoSe to enhance the kinetics for the intercalation-deintercalation of Na ions and 2) embed MoSe into the carbon matrix to enhance the conductivity and restrict the volume expansion and aggregation of MoSe . As a result, MoSe /C exhibits superior cycle performance and rate capability for sodium storage. It shows durable long-life cycle capability with a reversible capacity of 360 mAh g after 350 cycles at 0.5 Ag . At the current density of 4 Ag , the reversible capacity is still maintained at 266 mAh g .

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Section: Introductionmentioning

confidence: 99%

Flower‐like MoSe₂/C Composite with Expanded (0 0 2) Planes of Few‐layer MoSe₂ as the Anode for High‐Performance Sodium‐Ion Batteries

Lai

et al. 2017

Chemistry A European J

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“…[10] As previously reported, layered metal diselenide and graphene such as VSe 2 /graphene demonstrated good cycle stability and rate capability. [11] MoSe 2 nanosheets are rarely studied to be applied as active materials for SCs since they easily agglomerated because of high specific area. [12] Theoretically, combining MoSe 2 with conductive matrix, such as graphene, is a feasible way to improve the rate capability and cycle performance of electrodes, owing to its superior electrical conductivity and large surface area.…”

mentioning

confidence: 99%

CoNi₂S₄‐Graphene‐2D‐MoSe₂ as an Advanced Electrode Material for Supercapacitors

Shen

Pei

et al. 2016

Advanced Energy Materials

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158

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2D transition metal dichalcogenides (TMDCs) have attracted attention as active materials for SCs, because of their unique layered structure, higher electrical conductivity (compared with oxides), large surface area, and multivalent oxidation states of transition metal ions, [9] making pavements for diverse applications in energy storage and conversion systems. [10] As previously reported, layered metal diselenide and graphene such as VSe 2 /graphene demonstrated good cycle stability and rate capability. [11] MoSe 2 nanosheets are rarely studied to be applied as active materials for SCs since they easily agglomerated because of high specific area. [12] Theoretically, combining MoSe 2 with conductive matrix, such as graphene, is a feasible way to improve the rate capability and cycle performance of electrodes, owing to its superior electrical conductivity and large surface area. [13] However, despite the obtained promising results, the MoSe 2 nanosheets incline to agglomerate and separate from graphene sheets because of their poor interfacial properties if they are simply mixed, thus greatly limiting the capacitive performance. Therefore, strong and stable interfacial contact without obvious aggregation is the prerequisite to improve the supercapacitive performance of the 2D MoSe 2 /graphene sheets-based composites.On the other hand, ternary nickel cobalt sulfide, CoNi 2 S 4 , has been demonstrated to be a promising electrode material for SCs since it possesses richer redox reactions than the corresponding binary nickel sulfide and cobalt sulfide. In addition, it exhibits a major advantage over CoNi 2 O 4 , mainly due to a higher conductivity. [14][15][16] Compared with CoNi 2 O 4 , [17] the induced strain in CoNi 2 S 4 during charge-discharge cycles is less serious. Nevertheless, it is suggested to be limited by its relatively poor cyclability due to the structural degradation through the redox process. [18,19] To this end, fabrication of multi-component nanostructure electrode materials will be the best solution to the problem of low energy density and cycling stability. In this work, we designed a novel nanocomposite based on ternary components of graphene, MoSe 2 nanosheets, and CoNi 2 S 4 . First, a large amount of high quality graphene and MoSe 2 nanosheets were synthesized based on our previous liquid-exfoliation method. [20] Then, composites of CoNi 2 S 4 -graphene (CoNi 2 S 4 -G), CoNi 2 S 4 -2D MoSe 2 (CoNi 2 S 4 -MoSe 2 ), and CoNi 2 S 4 -graphene-2D MoSe 2 (CoNi 2 S 4 -G-MoSe 2 ) were prepared with an in situ hydrothermal 3D CoNi 2 S 4 -graphene-2D-MoSe 2 (CoNi 2 S 4 -G-MoSe 2 ) nanocomposite is designed and prepared using a facile ultrasonication and hydrothermal method for supercapacitor (SC) applications. Because of the novel nanocomposite structures and resultant maximized synergistic effect among ultrathin MoSe 2 nanosheets, highly conductive graphene and CoNi 2 S 4 nanoparticles, the electrode exhibits rapid electron and ion transport rate and large electroactive surface area, resulting in its am...

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“…The application of CoMoO 4 nanoparticles as electrode materials in the LIBs has been investigated. However, during the process of lithiation/delithiation, CoMoO 4 as an electrode material in LIBs has a lower conductivity and severe volume expansion . On the basis of such observations, a simple approach has been reported to prepare the CoMoO 4 nanocomposite with conducting polymer hybrid core‐shell nanowire arrays on conductive carbon cloth as electrode materials for LIBs.…”

Section: Lithium‐ion Batteriesmentioning

confidence: 99%

Fabrication of Metal Molybdate Micro/Nanomaterials for Electrochemical Energy Storage

Zhang

Zheng

Wang

et al. 2017

Small

120

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Currently, metal molybdates compounds can be prepared by several methods and are considered as prospective electrode materials in many fields because the metal ions possess the ability to exist in several oxidation states. These multiple oxidation states contribute to prolonging the discharge time, improving the energy density, and increasing the cycling stability. The high electrochemical performance of metal molybdates as electrochemical energy storage devices are discussed in this review. According to recent publications and research progress on relevant materials, the investigation of metal molybdate compounds are discussed via three main aspects: synthetic methods, material properties and measured electrochemical performance of these compounds as electrode materials. The recent progress in general metal molybdate nanomaterials for LIBs and supercapacitors are carefully presented here.

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3D Nanostructured Molybdenum Diselenide/Graphene Foam as Anodes for Long-Cycle Life Lithium-ion Batteries

Cited by 111 publications

References 38 publications

Flower‐like MoSe₂/C Composite with Expanded (0 0 2) Planes of Few‐layer MoSe₂ as the Anode for High‐Performance Sodium‐Ion Batteries

Flower‐like MoSe₂/C Composite with Expanded (0 0 2) Planes of Few‐layer MoSe₂ as the Anode for High‐Performance Sodium‐Ion Batteries

CoNi₂S₄‐Graphene‐2D‐MoSe₂ as an Advanced Electrode Material for Supercapacitors

Fabrication of Metal Molybdate Micro/Nanomaterials for Electrochemical Energy Storage

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3D Nanostructured Molybdenum Diselenide/Graphene Foam as Anodes for Long-Cycle Life Lithium-ion Batteries

Cited by 111 publications

References 38 publications

Flower‐like MoSe2/C Composite with Expanded (0 0 2) Planes of Few‐layer MoSe2 as the Anode for High‐Performance Sodium‐Ion Batteries

Flower‐like MoSe2/C Composite with Expanded (0 0 2) Planes of Few‐layer MoSe2 as the Anode for High‐Performance Sodium‐Ion Batteries

CoNi2S4‐Graphene‐2D‐MoSe2 as an Advanced Electrode Material for Supercapacitors

Fabrication of Metal Molybdate Micro/Nanomaterials for Electrochemical Energy Storage

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Flower‐like MoSe₂/C Composite with Expanded (0 0 2) Planes of Few‐layer MoSe₂ as the Anode for High‐Performance Sodium‐Ion Batteries

Flower‐like MoSe₂/C Composite with Expanded (0 0 2) Planes of Few‐layer MoSe₂ as the Anode for High‐Performance Sodium‐Ion Batteries

CoNi₂S₄‐Graphene‐2D‐MoSe₂ as an Advanced Electrode Material for Supercapacitors