Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/75647
Title: A high-performance electrode for supercapacitors : silver nanoparticles grown on a porous perovskite-type material La0.7Sr0.3CoO3-delta substrate
Authors: Liu, PP
Liu, J
Cheng, S
Cai, WZ 
Yu, FY
Zhang, YP
Wu, P
Liu, ML
Keywords: Supercapacitor
Electrode
Ag nanoparticles
La0.7Sr0.3CoO3-delta substrate
Issue Date: 2017
Publisher: Elsevier
Source: Chemical engineering journal, 2017, v. 328, p. 1-10 How to cite?
Journal: Chemical engineering journal 
Abstract: Supercapacitors have potential for many emerging energy storage applications because of their excellent power density and long cycling stability. However, their applicability is often limited by the relatively low energy density. Here we report our findings in design, fabrication, and testing of a composite electrode composed of Ag nanoparticles grown directly on a porous perovskite-type material La0.7Sr0.3CoO3-delta (LSC) substrate. When tested in KOH aqueous electrolyte, the electrode (with a high mass loading of Ag nanoparticles of 28.6 mg cm(-2)) demonstrates an areal capacity of 14.8 F cm(-2) (specific capacitance of 517.5 F g(-1) and volumetric capacitance of 262.5 F cm(-3)) at 1 mA cm(-2), while maintaining outstanding cycle stability (85.6% retention after 3000 cycles at 50 mA cm(-2)). An asymmetric supercapacitor (Ag/LSC//carboncloth) with a wide voltage of 1.8 V displays a high energy density of 21.9 mWh cm(-3) and an excellent stability. The superior capacitive performance can be ascribed to the porous, conductive and stable LSC framework, the uniform distribution and high mass loading of Ag nanoparticles on LSC, and the effective unitization of redox process.
URI: http://hdl.handle.net/10397/75647
ISSN: 1385-8947
EISSN: 1873-3212
DOI: 10.1016/j.cej.2017.06.150
Appears in Collections:Journal/Magazine Article

Access
View full-text via PolyU eLinks SFX Query
Show full item record

SCOPUSTM   
Citations

3
Citations as of May 11, 2018

WEB OF SCIENCETM
Citations

2
Last Week
0
Last month
Citations as of May 20, 2018

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.