Biocarbon based template synthesis of uniform lamellar MoS2 nanoflowers with excellent energy storage performance in lithium-ion battery and supercapacitors

Zhao, Gang; Cheng, Yong; Sun, Pengxiao; Ma, Wenxuan; Hao, Shuhua; Wang, Xiaoke; Xu, Xijin; Xu, Qianqian; Liu, Mengqi

doi:10.1016/j.electacta.2019.135262

Cited by 43 publications

(18 citation statements)

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“…The two samples were assembled as CR2032 coin-type cells anodes to evaluate their electrochemical mechanism and performance. The first three CV curves of the MoS 2 /C electrode were carried out over the potential window from [16,36]. Another two reduction peaks centered at 0.58 V and 0.1 V can be attributed to the generation of the solid electrolyte interphase (SEI) film and the reduction of Li x MoS 2 to Mo [14,15,25], respectively.…”

Section: Resultsmentioning

confidence: 99%

“…5 a, three reduction peaks are observed from 1.22 to 0.1 V in the first cathodic sweep. A broad reduction peak located at 0.73–1.22 V corresponds to the insertion of Li + into the MoS 2 /C and lithiation processes of MoS 2 to form Li x MoS 2 [ 16 , 36 ]. Another two reduction peaks centered at 0.58 V and 0.1 V can be attributed to the generation of the solid electrolyte interphase (SEI) film and the reduction of Li x MoS 2 to Mo [ 14 , 15 , 25 ], respectively.…”

Section: Resultsmentioning

confidence: 99%

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Hierarchical Porous MoS2/C Nanospheres Self-Assembled by Nanosheets with High Electrochemical Energy Storage Performance

2020

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To overcome the deficiency of the volume expansion of MoS2 as the anode material for lithium-ion batteries (LIBs), an effective strategy was developed to design hierarchical porous MoS2/carbon nanospheres via a facile, easy-operated hydrothermal method followed by annealing. FESEM and TEM images clearly showed that nanospheres are composed of ultra-thin MoS2/C nanosheets coated with carbon layer and possess an expanded interlayer spacing of 0.98 nm. As anodes for LIBs, MoS2/carbon nanospheres deliver an initial discharge capacity of 1307.77 mAh g−1 at a current density of 0.1 A g−1. Moreover, a reversible capacity of 612 mAh g−1 was obtained even at 2 A g−1 and a capacity retention of 439 mAh g−1 after 500 cycles at 1 A g−1. The improved electrochemical performance is ascribed to the hierarchical porous structure as well as the intercalation of carbon into lattice spacing of MoS2, which offers fast channels for ion/electron transport, relieves the influence of volume change and increases electrical conductivity of electrode. Meanwhile, the expanded interlayer spacing of MoS2 in MoS2/C can decrease the ion diffusion resistance and alleviate the volumetric expansion during discharge/charge cycles.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Hierarchical Porous MoS2/C Nanospheres Self-Assembled by Nanosheets with High Electrochemical Energy Storage Performance

2020

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“…Molybdenum-based composite materials have shown outstanding electrochemical performance when used as supercapacitors because of their increased surface area and good cycling stability (Zhao et al, 2020). Das et al (2015) reported that single crystalline Mo 2 N nanobelts can be synthesized using a slow nitride solid state reaction.…”

Section: Supercapacitorsmentioning

confidence: 99%

A Comprehensive Review on the Synthesis and Energy Applications of Nano-structured Metal Nitrides

2020

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Nanosized metal nitrides, due to their chemical characteristics which make them sustainable alternatives to noble metals in catalysis, have drawn the attention of researchers worldwide. Transition metal nitrides are very similar in their method of synthesis, properties, and applications. Their synthetic parameters are considered to be the main factor for determining the effectiveness of metal nitrides in photocatalysis, energy storage devices, remediation of environmental pollutants, gas sensors, and biomedical applications. This review focuses on very recent advances made in synthetic approaches and electrocatalytic applications of metal nitrides. The synthetic approaches will provide an overview of cost of production and consumption of energy and time required for synthesis. Furthermore, some recent techniques that offer new paths for researchers, such as electrochemical, sol-gel, solvothermal, sonochemical, solid-state reaction, chemical synthesis, and many more, are also discussed. Various applications in electrocatalysis, water splitting, lithium ion batteries, and super-capacitors, etc. are summarized. We are confident that this review will provide very useful information for the upcoming community of researchers interested in synthesizing nitrides for various applications.

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“…Unlike graphene and h-BN with single atomic layer, a transition metal layer is sandwiched between two chalcogenide atomic layers for TMDs. In general, these TMDs possess a finite bandgap, and are suitable for many electronic and photonic applications (Zhao et al, 2020a). Owing to the difference of lattice structure between TMDs and graphene, TMDs demonstrates different thermal transport properties (Zhao et al, 2020b).…”

Section: Transition Metal Dichalcogenidesmentioning

confidence: 99%

Thermal Transport in Two-Dimensional Heterostructures

2020

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Heterostructures based on two-dimensional (2D) materials have attracted intense attention in recent decades due to their unusual and tunable physics/chemical properties, which can be converted into promising engineering applications ranging from electronics, photonics, and phononics to energy recovery. A fundamental understanding of thermal transport in 2D heterostructures is crucial importance for developing micro-nano devices based on them. In this review, we summarized the recent advances of thermal transport in 2D heterostructures. Firstly, we introduced diverse theoretical approaches and experimental techniques for thermal transport in low-dimensional materials. Then we briefly reviewed the thermal properties of various 2D single-phase materials beyond graphene such as hexagonal boron nitride (h-BN), phosphorene, transition metal dichalcogenides (TMDs) and borophene, and emphatically discussed various influencing factors including structural defects, mechanical strain, and substrate interactions. Moreover, we highlighted thermal conduction control in tailored nanosystems—2D heterostructures and presented the associated underlying physical mechanisms, especially interface-modulated phonon dynamics. Finally, we outline their significant applications in advanced thermal management and thermoelectrics conversion, and discuss a number of open problems on thermal transport in 2D heterostructures.

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Biocarbon based template synthesis of uniform lamellar MoS2 nanoflowers with excellent energy storage performance in lithium-ion battery and supercapacitors

Cited by 43 publications

References 50 publications

Hierarchical Porous MoS2/C Nanospheres Self-Assembled by Nanosheets with High Electrochemical Energy Storage Performance

Hierarchical Porous MoS2/C Nanospheres Self-Assembled by Nanosheets with High Electrochemical Energy Storage Performance

A Comprehensive Review on the Synthesis and Energy Applications of Nano-structured Metal Nitrides

Thermal Transport in Two-Dimensional Heterostructures

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