Electrochemical hydrogen-storage performance of copper sulfide micro-hexagons
No Thumbnail Available
Date
2021
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Elsevier Ltd
Abstract
Electrochemical hydrogen-storage is one of the prominent energy storage systems. In this work, the hydrothermally synthesized copper sulfide (Cu<inf>2</inf>S) revealed a unique morphology of micro-hexagons as envisioned through scanning electron microscopy measurements. Electrochemical hydrogen storage (EHS) performance was evaluated using various electrochemical techniques, such as cyclic voltammetry, galvanostatic charge-discharge, and impedance spectroscopy measurements. The hydrogen discharge capacity of ~59.32 mAh g?1 was obtained at an applied current density of 1 A g?1. Further, the analysis of the charge-storage mechanism indicates foremost contributions from the redox processes. The prominent hydrogen storage performance is complimented with reasonable cyclic retention for 2500 cycles. © 2020 Hydrogen Energy Publications LLC
Description
Keywords
Copper compounds, Copper metallography, Cyclic voltammetry, Electric discharges, Electrochemical impedance spectroscopy, Hydrogen sulfide, Scanning electron microscopy, Sulfide minerals, Sulfur compounds, Electrochemical hydrogen storage, Electrochemical hydrogen storage performance, Electrochemical techniques, Energy storage systems, Galvanostatic charge discharges, Hydrothermally synthesized, Impedance spectroscopy measurements, Storage performance, Hydrogen storage
Citation
International Journal of Hydrogen Energy, 2021, 46, 7, pp. 5530-5536