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A novel high-performance cylindrical hybrid supercapacitor with Li4-xNaxTi5O12/activated carbon electrodes
- Issue Date
- 2-Oct-2014
- Publisher
- PERGAMON-ELSEVIER SCIENCE LTD
- Keywords
- Hybrid supercapacitor; Li4Ti5O12; Na doping; Cylindrical supercapacitor; Cycling behavior
- Citation
- INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, v.39, no.29, pp 16569 - 16575
- Pages
- 7
- Indexed
- SCI
SCIE
SCOPUS
- Journal Title
- INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
- Volume
- 39
- Number
- 29
- Start Page
- 16569
- End Page
- 16575
- ISSN
- 0360-3199
1879-3487
- Abstract
- A cylindrical hybrid supercapacitor was fabricated using Li4-xNaxTi5O12 as an anode and activated carbon as a cathode. Li4-xNaxTi5O12 (0 <= x <= 0.6) powder was successfully crystallized, and the grain size of Li4-xNaxTi5O12 decreased with increasing Na content. This indicated that Na can enhance the electrochemical performance due to smaller grain size and ionic conductivity. However, excessive Na content causes a distortion of the original Li4Ti5O12 structure during cycling. The hybrid supercapacitor with the Li3.7Na0.3Ti5O12 anode shows similar electrochemical performance to Li3.4Na0.6Ti5O12, and approximately 92% of the maximum cycle performance is retained, even after 5000 cycles at 2.5 Ag-1. Copyright (C) 2014, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
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Collections - 공학계열 > Dept.of Materials Engineering and Convergence Technology > Journal Articles
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