NDLI: Layer-structured nanohybrid MoS<sub>2</sub>@rGO on 3D nickel foam for high performance energy storage applications

Content Provider	Royal Society of Chemistry (RSC)
Author	Bulakhe, Ravindra N. Shim, Jae-Jin Nguyen, Van Hoa
Copyright Year	2017
Abstract	This paper describes the synthesis of molybdenum sulfide (MoS2)@reduced graphene oxide (rGO) on 3D nickel foam via an inexpensive room-temperature two-step method composed of the layer-by-layer (LBL) method followed by solution-based successive ionic layer adsorption and reaction (SILAR). “Self-assembly” growth mechanisms are proposed to discuss the growth of MoS2 on the rGO to form nanohybrid layered structures. The prepared nanohybrid multilayered structure with a high specific surface area and good electrical conductivity provided a higher specific capacitance of 1071 F g−1 at a current density of 2 A g−1 than that of the bare MoS2 electrode (661 F g−1 at 2 A g−1), showing an approximately 60% increase in capacitance. The nanohybrid layered structure showed an excellent energy density of 47.6 W h kg−1 and a power density of 7.6 kW kg−1 with a good retention capacity of 95% after 2000 cycles. An asymmetric supercapacitor with MoS2@rGO as the positive electrode and reduced graphene oxide as the negative electrode delivered a high energy density of 72.8 W h kg−1 at a power density of 7.4 kW kg−1 under an operating voltage window of 1.6 V. This performance was maintained at 92% of the original level at a constant current density of 8 A g−1, even after 4000 cycles. This approach offers a versatile technique for the design and synthesis of metal sulfide nanohybrid structures for electrochemical energy storage devices.
Starting Page	1473
Ending Page	1482
Page Count	10
File Format	HTM / HTML PDF
ISSN	11440546
Volume Number	41
Issue Number	4
Journal	New Journal of Chemistry
DOI	10.1039/c6nj02590k
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Sulfide Electrode Specific surface area Energy density Molybdenum Three-dimensional space Electrical resistivity and conductivity SILAR Adsorption Graphene Supercapacitor Electrochemistry Lawrence Berkeley National Laboratory Capacitance Nickel Electric current
Content Type	Text
Resource Type	Article
Subject	Chemistry Materials Chemistry Catalysis

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