Iron Selenide Particles for High-Performance Supercapacitors

Nowadays, iron (II) selenide (FeSe), which has been widely studied for years to unveil the high-temperature superconductivity in iron-based superconductors, is drawing increasing attention in the electrical energy storage (EES) field as a supercapacitor electrode because of its many advantages. In t...

Full description

Saved in:
Bibliographic Details
Published in:Materials 2023-07, Vol.16 (15), p.5309
Main Authors: Scarpa, Davide, Cirillo, Claudia, Ponticorvo, Eleonora, Cirillo, Carla, Attanasio, Carmine, Iuliano, Mariagrazia, Sarno, Maria
Format: Article
Language:English
Subjects:
Atoms & subatomic particles
Capacitance
Capacitors
Electrochemical analysis
Electrochemical impedance spectroscopy
Electrochemistry
Electrodes
Electrolytes
Energy storage
High temperature
Iron
Morphology
Spectrum analysis
Supercapacitors
Superconductivity
Superconductors
Voltammetry
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Nowadays, iron (II) selenide (FeSe), which has been widely studied for years to unveil the high-temperature superconductivity in iron-based superconductors, is drawing increasing attention in the electrical energy storage (EES) field as a supercapacitor electrode because of its many advantages. In this study, very small FeSe particles were synthesized via a simple, low-cost, easily scalable, and reproducible solvothermal method. The FeSe particles were characterized using cyclic voltammetry (CV), galvanostatic charge/discharge (GCD) measurements, and electrochemical impedance spectroscopy (EIS), revealing enhanced electrochemical properties: a high capacitance of 280 F/g at 0.5 A/g, a rather high energy density of 39 Wh/kg and a corresponding power density of 306 W/kg at 0.5 A/g, an extremely high cycling stability (capacitance retention of 92% after 30,000 cycles at 1 A/g), and a rather low equivalent series resistance (R ) of ~2 Ω.
ISSN:1996-1944
1996-1944
DOI:10.3390/ma16155309