Fabrication and electrochemical properties of cylindrical hybrid supercapacitor using H2Ti12O25 as anode material
- Authors
- Lee, Seung-Hwan; Kim, Hong-Ki; Lee, Jeong Hyun; Lee, Sung-Gap; Lee, 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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