Three-dimensional nickel foam/graphene/NiCo2O4 as high-performance electrodes for supercapacitors

Title
Three-dimensional nickel foam/graphene/NiCo2O4 as high-performance electrodes for supercapacitors
Author(s)
심재진웬방호아
Keywords
ELECTROCHEMICAL CAPACITORS; HYDROTHERMAL SYNTHESIS; COMPOSITE ELECTRODES; GRAPHENE OXIDE; NI FOAM; SURFACE; MNO2; PSEUDOCAPACITORS; DEPOSITION; NANOSHEETS
Issue Date
201501
Publisher
ELSEVIER SCIENCE BV
Citation
JOURNAL OF POWER SOURCES, v.273, pp.110 - 117
Abstract
A facile and efficient two-step method for the decoration of graphene sheets and nickel cobalt oxide (NiCo2O4) nanoparticles on conducting nickel foam was developed. First, graphene and a bimetallic (Ni, Co) hydroxide precursor were deposited on a Ni foam support by electrodeposition followed by a thermal transformation of the bimetallic hydroxide to NiCo2O4. The graphene layer with a thickness of a few nanometers was decorated with NiCo2O4 nanoparticles, ranging in size from 3 to 5 nm. The nickel foam electrode supported graphene and NiCo2O4 exhibited rapid electron and ion transport, large electroactive surface area, and excellent structural stability. The specific capacitance of the obtained electrode was as high as 1950 F g(-1) at a high current density of 7.5 A g(-1), suggesting its promising applications as an efficient electrode for electrochemical capacitors. (C) 2014 Elsevier B.V. All rights reserved.
URI
http://hdl.handle.net/YU.REPOSITORY/33698http://dx.doi.org/10.1016/j.jpowsour.2014.09.031
ISSN
0378-7753
Appears in Collections:
공과대학 > 화학공학부 > Articles
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

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

BROWSE