Freestanding Needle Flower Structure CuCo2S4 on Carbon Cloth for Flexible High Energy Supercapacitors With the Gel Electrolyte
A facile hydrothermal approach was adopted to the direct synthesis of bimetallic sulfide (CuCo 2 S 4 ) on carbon cloth (CC) without binders for the supercapacitor's electrodes. A possible formation mechanism was proposed. The prepared bimetallic electrode exhibited a high specific capacitance (...
Gespeichert in:
Veröffentlicht in: | Frontiers in chemistry 2020-02, Vol.8, p.62-62 |
---|---|
Hauptverfasser: | , , , , , , |
Format: | Artikel |
Sprache: | eng |
Schlagworte: | |
Online-Zugang: | Volltext |
Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
Zusammenfassung: | A facile hydrothermal approach was adopted to the direct synthesis of bimetallic sulfide (CuCo
2
S
4
) on carbon cloth (CC) without binders for the supercapacitor's electrodes. A possible formation mechanism was proposed. The prepared bimetallic electrode exhibited a high specific capacitance (Csp) of 1,312 F·g
−1
at 1 A·g
−1
, and an excellent capacitance retention of 94% at 5 A·g
−1
over 5,000 cycles. In addition, the asymmetric supercapacitor (CuCo
2
S
4
/CC//AC/CC) exhibited energy density (42.9 wh·kg
−1
at 0.8 kW·kg
−1
) and outstanding cycle performance (80% initial capacity retention after 5,000 cycles at 10 A·g
−1
). It should be noted that the electrochemical performance of a supercapacitor device is quite stable at different bending angles. Two charged devices in series can light 28 red-colored LEDs (2.0 V) for 5 min. All of this serves to indicate the potentially high application value of CuCo
2
S
4
. |
---|---|
ISSN: | 2296-2646 2296-2646 |
DOI: | 10.3389/fchem.2020.00062 |