High supercapacitor and adsorption behaviors of flower-like MoS<sub>2</sub>nanostructures

Wang, Xiuhua; Ding, Juanjuan; Yao, Shangwu; Wu, Xiaoxiu; Feng, Qingqing; Wang, Zhenghua; Geng, Baoyou

doi:10.1039/c4ta03044c

Cited by 298 publications

(164 citation statements)

References 32 publications

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“…Graphene-analogous MoS 2 also possesses large specific surface area due to its unique SeMoeS layered structure similar to "sandwich": there is a hexagonal layer of Mo held between two S layers, existing strong covalent bonding between MoeS while weak van der Waals interaction between SeS. Moreover, the planar charge transportation properties can be enhanced because of the two-dimensional (2D) electron-electron correlations among Mo atoms [8]. Remarkably, MoS 2 has higher theoretical capacity compared to graphite and higher intrinsic fastionic conductivity compared to its oxides [11,14].…”

Section: Introductionmentioning

confidence: 98%

“…Recently, layered transition metal dichalcogenides (TMDs) have attracted intensive attention, which have been applied in a variety of fields [5], such as energy storage [6], hydrogen evolution reaction [7], adsorbents [8], solid lubricants [9], and so on. From the structural point of view, molybdenum disulfide (MoS 2 ) is one typical member of the TMDs family, which has been shown to be a promising electrode material for the SCs due to its high theoretical specific capacitance with the layered structure analogous to graphite [10e13].…”

Section: Introductionmentioning

confidence: 99%

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Facile construction of 3D graphene/MoS2 composites as advanced electrode materials for supercapacitors

Sun

Liu

et al. 2016

Journal of Power Sources

140

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Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Facile construction of 3D graphene/MoS2 composites as advanced electrode materials for supercapacitors

Sun

Liu

et al. 2016

Journal of Power Sources

140

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“…Wang et al 132 reported 3D flower-like MoS 2 nanostructures obtained through a two-step hydrothermal treatment of MoO 3 nanorods. This pure MoS 2 showed a high specific capacitance of 168 F g À1 at 1 A g À1 in 1 M KCl solution.…”

Section: Applications In Energy Storage Devicesmentioning

confidence: 99%

Two-dimensional layered MoS₂: rational design, properties and electrochemical applications

Zhang

Liu

et al. 2016

Energy Environ. Sci.

551

331

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The layered molybdenum chalcogenide MoS 2 has attracted wide attention due to its potential electrochemical applications. Based on its unique physical and chemical properties, numerous advances have shown that nanostructured MoS 2 , with the advantages of low cost and outstanding properties, is a promising candidate for environmentally benign energy conversion and storage (ECS) devices.Nowadays, in order to lessen the reliance on fossil fuels, the production of hydrogen from water splitting has become an important issue. Hence, developing catalysts composed of earth-abundant elements that possess activities comparable to those of noble metals is of great urgency. According to DFT calculations in terms of HER free-energy diagrams, MoS 2 could be used as an effective substitute for noble metals. Meanwhile, MoS 2 with various structures has also been applied in the field of energy storage, including batteries and supercapacitors. Additionally, due to their layer-dependent electrical properties, MoS 2 -based electrochemical devices have been applied as sensors for a variety of chemicals.In this review, we summarize recent advances in the development of MoS 2 with high-performance in various electrochemical domains, and recent progress in discovering the mechanisms underlying the enhanced activity. Moreover, we summarize the critical obstacles facing MoS 2 , and discuss strategies for further improving its activity. Lastly, we offer some suggestions on the pathways toward achieving high performance competitive with noble metal counterparts, and perspectives on practical applications of MoS 2 in the future. Broader contextThe development of inexhaustible and clean energy technologies has far-reaching benefits for our society. Owing to its high anisotropy and unique crystal structure, the attractive properties of 2D molybdenum disulfide (MoS 2 ) can be utilized in a variety of energy conversion and storage (ECS) applications. Therefore, understanding how these properties can be tuned and the tunable properties can be utilized becomes increasingly important. In this review, we first summarize recent synthetic strategies toward preparation of MoS 2 with different structures, and its role in several important renewable energy technologies. We then discuss the relationship between the tuned properties and the performance of MoS 2 in different applications, emerging trends during their development, and challenges facing them, offering our perspectives on how to effectively advance the development of MoS 2 -based devices.

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“…While the 1T-polytype 33 of MoS2 has demonstrated high capacitance, electrodes made from the 2H-polytype of a number of TMDs have shown lower performances. [66][67][68][69][70] Because the aim of this work is not to demonstrate high-performance supercapacitors but to explore the effect of nanosheet dimensions on the performance of supercapacitor electrodes, we have opted to use size-selected 2H-WS2 nanosheets as a model system. An EDLC stores energy by localising non-Faradic charges at an electrode-electrolyte interface.…”

Section: Dependence Of Double Layer Capacitance On Nanosheet Sizementioning

confidence: 99%

Electrochemical Applications of Two-Dimensional Nanosheets: The Effect of Nanosheet Length and Thickness

et al. 2016

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Although many electrochemical properties of 2D materials depend sensitively on the nanosheet dimensions, there are no systematic, quantitative studies which analyse the effect of nanosheet size and thickness on electrochemical parameters. Here we use size-selected WS2 nanosheets as a model system to determine the effect of nanosheet dimensions in two representative areas -hydrogen evolution electrocatalytic electrodes and electrochemical double layer capacitor electrodes. We chose these applications as they depend on the interaction of ions with the nanosheet edge and basal plane, respectively, and so would be expected to be nanosheet-size-dependent. The data shows the catalytic current density to scale inversely with mean nanosheet length while the volumetric double layer capacitance scales inversely with mean nanosheet thickness. Both of these results are consistent with simple models allowing use to extract intrinsic quantities, namely the turnover frequency and the double layer thickness respectively.3

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High supercapacitor and adsorption behaviors of flower-like MoS₂nanostructures

Abstract: Uniform 3D flower-like MoS2nanostructures were successfully synthesized through a facile two-step hydrothermal method and had high supercapacitor and adsorption behaviors toward Rhodamine B.

Cited by 298 publications

References 32 publications

Facile construction of 3D graphene/MoS2 composites as advanced electrode materials for supercapacitors

Facile construction of 3D graphene/MoS2 composites as advanced electrode materials for supercapacitors

Two-dimensional layered MoS₂: rational design, properties and electrochemical applications

Electrochemical Applications of Two-Dimensional Nanosheets: The Effect of Nanosheet Length and Thickness

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High supercapacitor and adsorption behaviors of flower-like MoS2nanostructures

Abstract: Uniform 3D flower-like MoS2nanostructures were successfully synthesized through a facile two-step hydrothermal method and had high supercapacitor and adsorption behaviors toward Rhodamine B.

Cited by 298 publications

References 32 publications

Facile construction of 3D graphene/MoS2 composites as advanced electrode materials for supercapacitors

Facile construction of 3D graphene/MoS2 composites as advanced electrode materials for supercapacitors

Two-dimensional layered MoS2: rational design, properties and electrochemical applications

Electrochemical Applications of Two-Dimensional Nanosheets: The Effect of Nanosheet Length and Thickness

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Product

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High supercapacitor and adsorption behaviors of flower-like MoS₂nanostructures

Two-dimensional layered MoS₂: rational design, properties and electrochemical applications