Carbon Nanofibers Decorated with Molybdenum Disulfide Nanosheets: Synergistic Lithium Storage and Enhanced Electrochemical Performance

Zhou, Fei; Xin, Sen; Liang, Hai‐Wei; Song, Liying; Yu, Shu‐Hong

doi:10.1002/anie.201407103

Cited by 338 publications

(274 citation statements)

References 37 publications

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“…28,31,32 However, controlling the synthesis of MoS 2 nanosheets as a cocatalyst remains a serious challenge, and most of the available 3D heterostructures are prepared by two or more steps. 17,28,33,34 Hence, developing a simple, controllable general approach to synthesize 3D MoS 2 -based heterostructures is of considerable interest for cocatalyst applications.…”

Section: Introductionmentioning

confidence: 99%

Layer-controlled growth of MoS2 on self-assembled flower-like Bi2S3 for enhanced photocatalysis under visible light irradiation

et al. 2016

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Metal sulfide semiconductors, such as molybdenum disulfide (MoS 2 ) and bismuth trisulphide (Bi 2 S 3 ), are of considerable interest for their excellent applications in photocatalysis and in many other fields. However, the controllable synthesis of MoS 2 /Bi 2 S 3 hybrid nanostructures remains a challenge. In this study, we report a unique sacrificial templating strategy for preparing layer-controlled MoS 2 on three-dimensional (3D) Bi 2 S 3 micro-flowers. For this approach, Bi 2 S 3 was utilized as a sacrificial template to regulate the ion exchange, and the dosage of molybdenum was adjusted to tune the dynamic formation, thus converting the MoS 2 nanosheets on the Bi 2 S 3 micro-flowers from monolayer to multilayer. Such a 3D flower-like hybrid nanostructure enables MoS 2 /Bi 2 S 3 to exhibit adsorption-promoted photocatalysis under visible light irradiation, especially for the excellent photodegradation of low-concentration organic pollutants, for example, azo dye and atrazine. The observed superiority of the 3D MoS 2 /Bi 2 S 3 was mainly attributed to the increased mass transfer, robust light-harvesting capacity, improved charge separation, lower oxygen-activation barrier and enhanced active oxygen yield. Our findings are of interest for the development of novel S-based photocatalysts and provide a new opportunity to efficiently remove low-concentration refractory pollutants.

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Section: Introductionmentioning

confidence: 99%

Layer-controlled growth of MoS2 on self-assembled flower-like Bi2S3 for enhanced photocatalysis under visible light irradiation

et al. 2016

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“…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]. To evaluate electrochemical properties, the MoS 2 @carbon composite was investigated as an anode material for lithium-ion batteries.…”

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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“…[226][227][228][229][230] It is believed that the 3D CNF nanostructures not only facilitate the rapid transport of electrons along the interconnected carbon network, but also provide multidimensional buffer space for relieving the volume changes during the lithiation/ delithiation process, thereby further enhancing Li + storage capacities and improving the life span. There are various materials, including carbon materials, [40,231] metal oxides, [103,109] Si, [232] metal sulfides, [105,233] and metal phosphides, being used for constructing 3D CNF architectures as the anodes of LIBs. Specifically, CNF gels prepared by Fan and their coworkers are employed for the anodes of LIBs, showing a high reversible lithium capacity of 667 mA h g -1 at 0.12 mA cm -2 , good highrate performance, and long cycling stability, which is superior to those of pure graphene, natural graphite, and CNTs.…”

Section: Lithium-ion Batteries (Libs)mentioning

confidence: 99%

“…Our group also prepared CNFs@MoS 2 nanocomposites with MoS 2 sheets decorated on our CNF gel for the lithium storage. [233] In the nanocomposites, the CNF core not only acts as a Li storage matrix, but also provides an efficient electron pathway for fast lithiation/delithiation of the sheath. Meanwhile, the MoS 2 sheath decreases the excessive surface area of CNFs and promotes a rapid charge-transfer reaction by facilitating Li + migration.…”

Section: Lithium-ion Batteries (Libs)mentioning

confidence: 99%

Macroscopic‐Scale Three‐Dimensional Carbon Nanofiber Architectures for Electrochemical Energy Storage Devices

Chen

Feng

Liang

et al. 2017

Advanced Energy Materials

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162

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Therefore, it is necessary to develop highperformance energy storage devices for facilitating the effective utilization of intermittent renewable energy sources. [7][8][9] Among varieties of electrochemical energy storage devices, supercapacitors (known as electrochemical capacitors) [10,11] and some rechargeable batteries (lithium-ion batteries (LIBs), lithiumsulfur (Li-S) batteries, and metal-O 2 batteries) [12][13][14][15] are at the frontier, because they can transport high power and store high energy. Nowadays, they play an indispensable role in our daily life by powering numerous portable electronic devices (e.g., cell phones and laptops), hybrid electric vehicles, and large-scale electrical grids. [16][17][18][19] It is well accepted that the performance of energy storage devices mainly depended on their electrode materials. [20,21] Owing to the advantages of large surface area, light weight, good electrical conductivity, and high thermal/ chemical stability, carbon materials have been considered as the most important electrode materials of supercapacitors and rechargeable batteries [8,20,21] Hence, various nanostructured carbons, such as carbon/graphene quantum dots, [22,23] carbon nanofiber (CNFs), [16,24] carbon nanotubes (CNTs), [13,25] graphene [26][27][28][29][30][31][32] carbon nanosheets, [33,34] 3D carbon nanostructures, [35][36][37] and porous carbon, [38,39] have gained great attention. Among these materials, 3D carbon nanomaterials have some advantages. The interlinked architecture not only shortens transport distances for ions in the well-interconnected wall structure, but also provides a continuous pathway endowing for the fast electron transport. [40] Moreover, the structural interconnectivities guarantee higher electrical conductivity and better mechanical stability. [36,41] Thereby, the design and fabrication of various 3D carbonbased nanostructures, including carbon nanotube networks, graphene gels, graphene foams, and 3D CNFs, have been intensively investigated.Over the past few years, there are many reviews summarizing the progress of fabricating 3D carbon-based nanomaterials. For example, Schneider et al. overviewed the recent advance in the synthesis of 3D arranged carbon nanotube architectures. [42] Li et al. reviewed the carbon-based 3D nanostructures for supercapacitors. [36] Cao and Gui et al. comprehensively reviewed the recent progress in synthesis, properties, and energy applications of CNT sponges, aerogels, and hierarchical composites. [43] The development of high-performance electrochemical energy storage devices is critical for addressing energy crises and environmental pollution.

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Carbon Nanofibers Decorated with Molybdenum Disulfide Nanosheets: Synergistic Lithium Storage and Enhanced Electrochemical Performance

Cited by 338 publications

References 37 publications

Layer-controlled growth of MoS2 on self-assembled flower-like Bi2S3 for enhanced photocatalysis under visible light irradiation

Layer-controlled growth of MoS2 on self-assembled flower-like Bi2S3 for enhanced photocatalysis under visible light irradiation

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

Macroscopic‐Scale Three‐Dimensional Carbon Nanofiber Architectures for Electrochemical Energy Storage Devices

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