Work

Cathodic Deposition of Flaky Nickel Sulfide Nanostructure as an Electroactive Material for High-Performance Supercapacitors

Year: 2013

Type: article

Abstract: In this current work, a flaky nickel sulfide (Ni 3 S 2 ) nanostructure was deposited on a Ni foam substrate using a facile potentiodynamic deposition approach and investigated as an electroactive material for high-performance supercapacitor for the first time. X-ray diffraction, scanning electron microscopy and transmission electron microscopy confirmed that the as-prepared Ni 3 S 2 nanostructure was assembled from intercrossing nanoflakes, thus facilitating the electrolyte penetration. The flaky Ni 3 S 2 nanostructure showed a high specific capacitance as well as 717 F g −1 at 2 A g −1 , and a remarkable rate capability, in which a promising specific capacitance of 411 F g −1 can still be delivered at 32 A g −1 . Moreover, the flaky Ni 3 S 2 nanostructure demonstrated an impressive excellent cycling performance that ∼91% of retention in the specific capacitance can still be made after cycling of 500–1000 consecutive charge/discharge tests at a relatively high current density of 4 A g −1 . As a result, the flaky Ni 3 S 2 nanostructure can be considered as a promising electroactive material for high-performance SCs.

Source: Journal of The Electrochemical Society

DOI: 10.1149/2.078304jes

Authors: Shu-Wei Chou, Jeng-Yu Lin

Institution: Tatung University

Language: English

Topic: Supercapacitor Materials and Fabrication

Subfield: Electronic, Optical and Magnetic Materials

Field: Materials Science

Domain: Physical Sciences

SDG: Affordable and clean energy

Open Access status: bronze

Funder: National Science Council