Journal
NANO RESEARCH
Volume 10, Issue 8, Pages 2570-2583Publisher
TSINGHUA UNIV PRESS
DOI: 10.1007/s12274-017-1459-9
Keywords
multiwall C nanotubes decorated with hierarchical ultrathin zinc sulfide nanosheets(ZnS@CNT); ultrathin nanosheet; flexible; synergistic; supercapacitor
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Funding
- National Natural Science Foundation of China [61574122, 51502257, 21373107, U1304108]
- Innovative Research Team (in Science and Technology) in Universities in Henan Province [13IRTSTHN018]
- Key Project of Henan Educational Committee [15A140035]
- program for Science & Technology Innovation Talents in Universities of Henan Province [15HASTIT018]
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Flexible and easily reconfigurable supercapacitors show great promise for application in wearable electronics. In this study, multiwall C nanotubes (CNTs) decorated with hierarchical ultrathin zinc sulfide (ZnS) nanosheets (ZnS@CNT) are synthesized via a facile method. The resulting ZnS@CNT electrode, which delivers a high specific capacitance of 347.3 F.g(-1) and an excellent cycling stability, can function as a high-performance electrode for a flexible all-solid-state supercapacitor using a polymer gel electrolyte. Our device exhibits a remarkable specific capacitance of 159.6 F.g(-1), a high energy density of 22.3 W.h.kg(-1), and a power density of 5 kW.kg(-1). It also has high electrochemical performance even under bending or twisting. The all-solid-state supercapacitors can be easily integrated in series to power different commercial light-emitting diodes without an external bias voltage.
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