Journal
ELECTROCHIMICA ACTA
Volume 319, Issue -, Pages 859-868Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2019.07.045
Keywords
Zinc cobalt sulfide; Hierarchical flowers; Asymmetric supercapacitors; Specific capacitance
Categories
Funding
- National Natural Science Foundation of China [51573126, 51602069]
Ask authors/readers for more resources
In this work, hierarchical zinc cobalt sulfide flowers on nickel foam (f-Zn0.76Co0.24S/Ni foam) are fabricated by a facile two-step hydrothermal method. The obtained f-Zn0.76Co0.24S/Ni foam are directly used as the binder-free electrodes for high-performance supercapacitors. The as-prepared f-Zn0.76Co0.24S/Ni foam exhibite a high specific capacitance of 1906 F g(-1) at a current density of 1 A g(-1) and good rate performance. The excellent electrochemical performance can be attributed to the unique interconnected flower structure, which provides a path for the rapid diffusion of electrolyte ions. Moreover, the f-Zn0.76Co0.24S/Ni foam//Fe2O3@rGO asymmetric supercapacitor is assembled. It can achieve a high energy density of 75.7 Wh kg(-1) at a power density of 700.5 W kg(-1) and display superior cycling stability with 86.7% retention after 8000 cycles. (C) 2019 Elsevier Ltd. All rights reserved.
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