Journal
APPLIED SURFACE SCIENCE
Volume 453, Issue -, Pages 73-82Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apsusc.2018.04.159
Keywords
Core-shell heterostructure; Flexible; NiCo2S4; CoMoO4; All-solid-state asymmetric supercapacitor
Categories
Funding
- National Natural Science Foundation of China [HEUCF171006]
- Fundamental Research Funds of the Central University (HEUCF)
- Natural Science Foundation of Heilongjiang Province [B2015021]
- International Science & Technology Cooperation Program of China [2015DFA50050]
- Major Project of Science and Technology of Heilongjiang Province [GA14A101]
- Application Technology Research and Development Projects of Harbin [2015RAQXJ038]
- Application Technology Research and Development Plan of Heilongjiang Province [GX16A008]
Ask authors/readers for more resources
In order to meet the application requirements of portable and wearable devices, the high-efficiency energy storage units with high energy density, high power density and long cycle life are urgently needed. In this work, we have successfully fabricated novel flexible electrode comprising NiCo2S4@CoMoO4 core-shell nanowire arrays on carbon cloth via a facile three-step hydrothermal process. Benefiting from the unique hierarchical structure and their synergistic effects between CoMoO4 and NiCo2S4, the supercapacitor electrode realizes a fast electron and ion transfer, a large electroactive surface area and superior conductivity. As a result, the NiCo2S4@CoMoO4 electrode exhibits superior performances with an outstanding specific capacitance of 2118.8 F g(-1) at 1 Ag-1 and an excellent rate capability of 81.6% at 20 A g(-1). After 5000 cycles, the NiCo2S4@CoMoO4 electrode shows an excellent cyclic performance with 88.6% capacity retention. The excellent performance of electrode is also confirmed by assembling all-solid-state asymmetric supercapacitor, which delivers a high energy density of 66.6 Wh kg(-1) as well as the maximum power density of 16 kW kg(-1). This work demonstrates that the NiCo2S4@CoMoO4 electrode provides a promising material for the energy storage applications in the future. (C) 2018 Published by Elsevier B.V.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available