Enhanced Symmetric Supercapacitive Performance of Co(OH)2 Nanorods Decorated Conducting Porous Graphene Foam Electrodes

Title
Enhanced Symmetric Supercapacitive Performance of Co(OH)2 Nanorods Decorated Conducting Porous Graphene Foam Electrodes
Authors
U.M. Patil이수찬J.S. SohnS.B. KulkarniK.V. GuravJ.H. Kim김재헌이석Seong Chan Jun
Keywords
Symmetric supercapacitor; Co(OH)2 nanorods; graphene foam; specific capacitance; energy and power density
Issue Date
2014-05
Publisher
Electrochimica acta
Citation
VOL 129, 334-342
Abstract
Hierarchical entangled Co(OH)2 nanorods (NRs) are anchored on graphene foam (GF) electrodes by usinga facile chemical bath deposition (CBD) method. The porous, conducting, and higher specific area accessoffered by the interconnected 3D graphene framework along with unique Co(OH)2 NRs morphology ofelectrode displays ultrahigh specific capacitance, energy and power density. The Co(OH)2/GF electrodereveals maximum specific capacitance about 1139 F g−1 at 10 A g−1charge-discharge current densityin 1 M KOH aqueous solution. Moreover, Co(OH)2/GF electrode in the symmetric supercapacitor device,reveals a high energy (13.9 Wh kg−1) with power (18 kW kg−1) density. These results promote the poten-tial applicability of Co(OH)2/GF electrode in the supercapacitor field with effective boosting in chargetransfer and storage mechanism.
URI
http://pubs.kist.re.kr/handle/201004/47573
ISSN
00134686
Appears in Collections:
KIST Publication > Article
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