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Fabrication and electrochemical properties of cylindrical hybrid supercapacitor using H2Ti12O25 as anode material

Authors
Lee, Seung-HwanKim, Hong-KiLee, Jeong HyunLee, Sung-GapLee, Young-Hie
Issue Date
15-Mar-2015
Publisher
ELSEVIER
Keywords
H2Ti12O25; Cylindrical hybrid supercapacitor; Ragone plot
Citation
MATERIALS LETTERS, v.143, pp 101 - 104
Pages
4
Indexed
SCI
SCIE
SCOPUS
Journal Title
MATERIALS LETTERS
Volume
143
Start Page
101
End Page
104
URI
https://scholarworks.gnu.ac.kr/handle/sw.gnu/17350
DOI
10.1016/j.matlet.2014.12.069
ISSN
0167-577X
1873-4979
Abstract
We successfully prepare H2Ti12O25 by soft-chemical synthesis using Na2Ti3O7 compounds, prepared by Na+/H+ ion exchange and heating. Then, a cylindrical hybrid supercapacitor is fabricated by using H2Ti12O25 as anode and activated carbon as cathode. The specific capacitance of hybrid supercapacitor using H2Ti12O25 is 57 Fg(-1) higher than that of hybrid supercapacitor using Li4Ti5O12 (38 Fg(-1)). The hybrid supercapacitor using H2Ti12O25 exhibit cycle performance with a capacitance retention of 65.3% available for battery application. The energy density is 35W h kg(-1) at a power density of 179W kg(-1) and 4W h kg(-1) at a power density of 5383W kg(-1). These results show that the H2Ti12O25 anode material is a promising electrode material for hybrid supercapacitor. (C) 2014 Elsevier B.V. All rights reserved.
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