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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
Three-Dimensional Interconnected Binder-Free Mn-Ni-S Nanosheets for High Performance Asymmetric Supercapacitor Devices with Exceptional Cyclic Stability
ACS Applied Energy Materials, Volume 2, No. 5, Year 2019
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Description
A facile one-step method was demonstrated for the electrodeposition of manganese-nickel sulfide (Mn-Ni-S) 3D interconnected sheets on nickel foam substrates. The as-synthesized materials were characterized using field-emission scanning electron microscopy (FESEM), X-ray diffraction (XRD), energy-dispersive X-ray spectroscopy (EDS), and X-ray photoelectron spectroscopy (XPS) techniques. Upon their use as supercapacitor electrodes, the electrodeposited Mn-Ni-S showed exceptionally high specific capacitance (2849 and 1986 F/g at 1 and 5 A/g, respectively) and an excellent rate capability. Using Fe3O4-GR as the negative electrode and the Mn-Ni-S 3D interconnected sheets as the positive electrode to assemble an asymmetric supercapacitor device revealed high power density (800 W kg-1) and energy density (40.44 Wh kg-1) with 90% capacitance retention and a Columbic efficiency of 100% after 11 000 cycles, indicating the high potential of the fabricated materials for practical energy storage devices. © 2019 American Chemical Society.
Authors & Co-Authors
Ahmed, Nashaat
Egypt, New Cairo
American University in Cairo
Ali, Basant A.
Egypt, New Cairo
American University in Cairo
Ramadan, Mohamed Shafik
Egypt, New Cairo
American University in Cairo
Allam, Nageh K.
Egypt, New Cairo
American University in Cairo
Statistics
Citations: 85
Authors: 4
Affiliations: 1
Identifiers
Doi:
10.1021/acsaem.9b00435
ISSN:
25740962
Research Areas
Environmental