Journal
MATERIALS LETTERS
Volume 233, Issue -, Pages 286-289Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2018.09.033
Keywords
Energy storage and conversion; Microstructure; Supercapacitor; MoS2; Yolk-shell microspheres
Funding
- Natural Science Foundation of Henan Province, China [182300410267]
- Natural Science Foundation of China [U1704149]
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Due to its 2D-layered structure, MoS2 has drawn a lot of attention in energy storage device. Herein, yolkshell MoS2 (YS-MoS2) microspheres were fabricated through a facile hydrothermal method with the presence of PEG-800. Both the shell and the core of the microsphere are composed of numerous self-assembly ultrathin nanosheets. In addition, the interlayer spacing of the synthesized YS-MoS2 is larger than the standard value of MoS2. As a supercapacitor electrode material, the YS-MoS2 showed high specific capacitance (343.0 F.g(-1) at 0.25 A.g(-1)) and excellent cyclic stability (120% of the initial specific capacitance was retained after 1000 cycles at 2.0 A.g(-1)). The excellent electrochemical performances of synthesized YSMoS2 may be ascribed to its yolk-shell structure, hierarchical porous structure and expanded interlayer spacing. (C) 2018 Elsevier B.V. All rights reserved.
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