Facile synthesis of nanoparticles anchored on honeycomb-like MnCo2S4 nanostructures as a binder-free electroactive material for supercapacitors
AuthorsRaghavendra, Kummara Venkata Guru
Gopi, Chandu V.V.Muralee
Rao, S. Srinivasa
Obaidat, Ihab M.
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 Date2019-12-23
Print Publication Date2020-02
Embargo End Date2021-12-23
Permanent link to this recordhttp://hdl.handle.net/10754/660916
MetadataShow full item record
AbstractIn the present study, nanoparticles filled with honeycomb-like MnCo2S4 (MCS) nanostructures are prepared successfully on the surface of nickel foam using a simple and cost-effective chemical bath deposition method and can be used as a promising electroactive material for high performance supercapacitor applications. The electrochemical behavior of the as-prepared electroactive materials was studied by the cyclic voltammetry, galvanostatic charge/discharge, electron impedance spectroscopy. The crystalline phase, structure, morphology and composition of the as-prepared electroactive materials were analyzed by X-ray diffraction, field-emission scanning electron microscopy, transmission electron microscopy and X-ray photoelectron spectroscopy. The performance of the as-prepared electroactive materials was carried out in a 3 M KOH electrolyte in the three-electrode system. The unique nanoparticle structures enable and provides the more efficient pathways for the rapid mobility of electrons and ions. As a result, the as-prepared binder-free MCS electrode exhibits a higher specific capacity of 129.7 mA h g−1 at 1 A g−1, superior rate capability of 88.51% after 4000 cycles and excellent cycling stability of 87.81% respectively, which are much higher than that of MCO electrode. These results reveal that the as synthesized MCS electrode found to be the most promising candidate for high-performance supercapacitor applications.
CitationRaghavendra, K. V. G., Gopi, C. V. V. M., Vinodh, R., Rao, S. S., Obaidat, I. M., & Kim, H.-J. (2020). Facile synthesis of nanoparticles anchored on honeycomb-like MnCo2S4 nanostructures as a binder-free electroactive material for supercapacitors. Journal of Energy Storage, 27, 101159. doi:10.1016/j.est.2019.101159
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. Also, this work was supported by UAEU Program for Advanced Research (UPAR) under Grant no. 31S312.
JournalJournal of Energy Storage