Journal
JOURNAL OF POWER SOURCES
Volume 331, Issue -, Pages 180-188Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2016.09.036
Keywords
Three-dimensional graphene (3DG); MoS2; Nanoflowers; Hydrothermal; Supercapacitor
Funding
- National Natural Science Foundation of China [51502306, 51575507]
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Flower-like molybdenum disulfide (MoS2) microstructures are synthesized based on three-dimensional graphene (3DG) skeleton via a simple and facile one-step hydrothermal method, aiming at constructing series of novel composite electrode materials of 3DG/MoS2 with high electrochemical performances for supercapacitors. The electrochemical properties of the samples are evaluated by cyclic voltammetry and galvanostatic charge/discharge tests. Specifically, the optimal 3DG/MoS2 composite exhibits remarkable performances with a high specific capacitance of 410 Fg(-1) at a current density of 1 A g(-1) and an excellent cycling stability with ca. 803% capacitance retention after 10,000 continuous charge-discharge cycles at a high current density of 2 A g(-1), making it adaptive for high-performance supercapacitors. The enhanced electrochemical performances can be ascribed to the combination of 3DG and flower-like MoS2, which provides excellent charge transfer network and electrolyte diffusion channels while effectively prevents the collapse, aggregation and morphology change of active materials during charge-discharge process. The results demonstrate that 3DG/MoS2 composite is one of the attractive electrode materials for supercapacitors. (C) 2016 Elsevier B.V. All rights reserved.
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