Abstract
Fossil fuel depletion, environmental pollution, and global warming have attracted interest in developing green and replaceable energy storage devices. Among various energy storage devices, supercapacitors (SCs) have been widely recognized in a wide range of applications in energy storage over the past decade, such as electric vehicles, mobile electronic devices, large industrial equipment, memory backup systems, and military devices. It is due to their unique properties including high power capability, long cycle lifetime, and fast charge/discharge rate.In this work, nickel sulfide (Ni3S2) nanosheets were growth on the surface of graphitic-nanofibres (GNFs) by using pulse-reversal (PR) electrodeposition method. Compared to the pristine Ni3S2 electrode with discharged capacitance of 461 F g-1, the GNFs@ Ni3S2 electrode revealed a higher capacitance of 635 F g-1 at the same charge-discharge current density of 0.5 mA cm-2. The GNFs@ Ni3S2 electrode still retained 79% of the capacitance at 0.5 mA cm-2 when it was charged/discharged at 4 mAcm-2. Furthermore, the GNFs@ Ni3S2 electrode showed great electrochemical stability. For instance, the GNFs@ Ni3S2 electrode displayed 90% of initial capacitance after the consecutive 200 cycles charged/discharged at current density of 0.5 mAcm-2.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
