Journal
APPLIED SURFACE SCIENCE
Volume 504, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.apsusc.2019.144501
Keywords
NiCo2S4 hollow cages; Cation exchange; Asymmetric supercapacitors
Categories
Funding
- National Natural Science Foundation of China [21801200, 21433007, 21573170, 51872220]
- Fundamental Research Funds for the Central Universities [WUT: 2019IVB050, 2018IVA089]
Ask authors/readers for more resources
For supercapacitors, development of electrode materials with superior electrochemical performance is urgently needed. Herein, we synthesized novel nickel cobalt sulfide (NiCo2S4) hollow cages as electrode materials for supercapacitors. The NiCo2S4 hollow cages possess a hollow interior and mesoporous structure, which could shorten ion diffusion distance and provide plentiful electroactive sites. Thanks to the appealing structures, the NiCo2S4 hollow cages exhibit an appealing capacitance of 1382 F g(-1) at 1 A g(-1). Furthermore, asymmetric supercapacitors (ASCs) are fabricated with the synthesized NiCo2S4 and active carbon (AC) as electrodes. The ASC shows an energy density of 35.3 Wh kg(-1) at a power density of 750 W kg(-1) and an outstanding cycling stability of 79% retention after 10,000 cycles. The excellent performance of NiCo2S4 hollow cages makes them promising candidates in supercapacitors.
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