One-step facile synthesis of dense cloud-like tiny bundled nanoparticles of CuS nanostructures as an efficient electrode material for high-performance supercapacitors
AuthorsRaghavendra, Kummara Venkata Guru
Gopi, Chandu V.V.Muralee
Durga, Ikkurthi Kanaka
Kim, Hee Je
KAUST DepartmentPhotonics Laboratory, Division of Computer, Electrical, and Mathematical Sciences and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal Jeddah 23955-6900, Saudi Arabia
Online Publication Date2019-12-18
Print Publication Date2020-02
Embargo End Date2021-12-18
Permanent link to this recordhttp://hdl.handle.net/10754/660976
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AbstractThe dense cloud like tiny bundles consisting of CuS nanoparticles were prepared successfully by a simple facile one-step chemical bath deposition method. The CuS electrodes at three different time periods such as 5, 10 and 20 h were prepared and their crystallographic phase, structural, morphological and the composition of the as-prepared electrodes are studied in detail. The CuS-10 h electrode possessed the dense cloud like structured nanoparticles on the surface of the Ni foam created pathways in a more efficient manner that allows the swift mobility of electrons/ions. Moreover, the electrochemical behavior and performance of the electrodes are carried out in a 3 M KOH electrolyte in the three-electrode system. The cyclic voltammetry and galvanostatic charge/discharge results confirm that all the fabricated CuS electrodes exhibit the battery-type behavior. As a battery-type material, the binder-free CuS-10 h electrode exhibits the enhanced specific capacity of 164.053 m Ah g−1 at 1 A g−1, higher rate capability of 82.54% and good cycling stability of 97.12% after 4000 cycles, respectively, that is very high when compared to the CuS-5 h and CuS-20 h electrodes. As a result, from the detailed analysis, it is found that CuS as an excellent electrode material for high energy storage supercapacitor applications.
CitationRaghavendra, K. V. G., Gopi, C. V. V. M., Vinodh, R., Durga, I. K., & Kim, H.-J. (2020). One-step facile synthesis of dense cloud-like tiny bundled nanoparticles of CuS nanostructures as an efficient electrode material for high-performance supercapacitors. Journal of Energy Storage, 27, 101148. doi:10.1016/j.est.2019.101148
SponsorsThis research was supported by Basic Research Laboratory through the National Research Foundations of Korea, funded by the Ministry of Science, ICT and Future Planning (NRF-2015R1A4A1041584). We also thankful to KBSI for measurements.
JournalJournal of Energy Storage