Edge‐Oriented MoS<sub>2</sub> Nanoporous Films as Flexible Electrodes for Hydrogen Evolution Reactions and Supercapacitor Devices

Yang, Yang; Fei, Huilong; Ruan, Gedeng; Xiang, Changsheng; Tour, James M.

doi:10.1002/adma.201402847

Cited by 569 publications

(362 citation statements)

References 17 publications

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“…Edge‐oriented MoS 2 thin films have been fabricated by a simple and scalable method as illustrated in Figure 18 384. At first, molybdenum metal is electrochemical anodized forming nanostructured Mo oxide porous thin‐films.…”

Section: Electrode Materialsmentioning

confidence: 99%

Materials Design and System Construction for Conventional and New‐Concept Supercapacitors

et al. 2017

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With the development of renewable energy and electrified transportation, electrochemical energy storage will be more urgent in the future. Supercapacitors have received extensive attention due to their high power density, fast charge and discharge rates, and long‐term cycling stability. During past five years, supercapacitors have been boomed benefited from the development of nanostructured materials synthesis and the promoted innovation of devices construction. In this review, we have summarized the current state‐of‐the‐art development on the fabrication of high‐performance supercapacitors. From the electrode material perspective, a variety of materials have been explored for advanced electrode materials with smart material‐design strategies such as carbonaceous materials, metal compounds and conducting polymers. Proper nanostructures are engineered to provide sufficient electroactive sites and enhance the kinetics of ion and electron transport. Besides, new‐concept supercapacitors have been developed for practical application. Microsupercapacitors and fiber supercapacitors have been explored for portable and compact electronic devices. Subsequently, we have introduced Li‐/Na‐ion supercapacitors composed of battery‐type electrodes and capacitor‐type electrode. Integrated energy devices are also explored by incorporating supercapacitors with energy conversion systems for sustainable energy storage. In brief, this review provides a comprehensive summary of recent progress on electrode materials design and burgeoning devices constructions for high‐performance supercapacitors.

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Section: Electrode Materialsmentioning

confidence: 99%

Materials Design and System Construction for Conventional and New‐Concept Supercapacitors

et al. 2017

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“…The coulombic efficiency in various electrolytes at a current rate of 2 A g À1 was as high as 90-98%. Tour et al 130 reported the fabrication of an edgeoriented MoS 2 thin-film by electrochemical anodization of molybdenum metal followed by sulfur vapor treatment (Fig. 12H-J).…”

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.

550

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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“…The high activity mainly comes from the sulfur atoms at the edges of MoS 2 6, 7. Extensive efforts have been dedicated to preparing edge‐rich MoS 2 with ample electrochemically accessible active sites to enhance catalyst activity 8, 9, 10, 11, 12, 13, 14. Currently, the preparation of MoS 2 for hydrogen evolution reaction involves complex and time‐consuming processes such as chemical Li‐intercalation and exfoliation,15, 16 chemical vapor deposition growth,17, 18 and hydrothermal/solvothermal reaction 8, 19, 20, 21, 22.…”

Section: Introductionmentioning

confidence: 99%

A Flexible Platform Containing Graphene Mesoporous Structure and Carbon Nanotube for Hydrogen Evolution

Zhang

et al. 2016

Advanced Science

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It is of great significance to design a platform with large surface area and high electrical conductivity for poorly conductive catalyst for hydrogen evolution reaction (HER), such as molybdenum sulfide (MoSx), a promising and cost‐effective nonprecious material. Here, the design and preparation of a free‐standing and tunable graphene mesoporous structure/single‐walled carbon nanotube (GMS/SWCNT) hybrid membrane is reported. Amorphous MoSx is electrodeposited on this platform through a wet chemical process under mild temperature. For MoSx@GMS/SWCNT hybrid electrode with a low catalyst loading of 32 μg cm−2, the onset potential is near 113 mV versus reversible hydrogen electrode (RHE) and a high current density of ≈71 mA cm−2 is achieved at 250 mV versus RHE. The excellent HER performance can be attributed to the large surface area for MoSx deposition, as well as the efficient electron transport and abundant active sites on the amorphous MoSx surface. This novel catalyst is found to outperform most previously reported MoSx‐based HER catalysts. Moreover, the flexibility of the electrode facilitates its stable catalytic performance even in extremely distorted states.

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Edge‐Oriented MoS₂ Nanoporous Films as Flexible Electrodes for Hydrogen Evolution Reactions and Supercapacitor Devices

Cited by 569 publications

References 17 publications

Materials Design and System Construction for Conventional and New‐Concept Supercapacitors

Materials Design and System Construction for Conventional and New‐Concept Supercapacitors

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

A Flexible Platform Containing Graphene Mesoporous Structure and Carbon Nanotube for Hydrogen Evolution

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Edge‐Oriented MoS2 Nanoporous Films as Flexible Electrodes for Hydrogen Evolution Reactions and Supercapacitor Devices

Cited by 569 publications

References 17 publications

Materials Design and System Construction for Conventional and New‐Concept Supercapacitors

Materials Design and System Construction for Conventional and New‐Concept Supercapacitors

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

A Flexible Platform Containing Graphene Mesoporous Structure and Carbon Nanotube for Hydrogen Evolution

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Product

Resources

About

Edge‐Oriented MoS₂ Nanoporous Films as Flexible Electrodes for Hydrogen Evolution Reactions and Supercapacitor Devices

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