M. M., Yusoff and Rajan, Jose and K. F., Chong and Radhiyah, Abd Aziz and Izan Izwan, Misnon (2013) Layered Sodium Titanate Nanostructures as a New Electrode for High Energy Density Supercapacitors. Electrochimica Acta, 113. pp. 141-148. ISSN 0013-4686. (Published)
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Abstract
A flower-shaped hydrated layered sodium titanate material, Na2Ti2O4(OH)2, have been synthesized through a facile hydrothermal method and subsequently converted into sodium free titania (anatase). Potential application of the Na2Ti2O4(OH)2 as an electrode for supercapacitors under pseudo-capacitance storage mode is evaluated. The Na2Ti2O4(OH)2 showed sixfold higher specific capacitance (CS ∼ 300 F g−1) in an aqueous electrolyte than the anatase and demonstrated stable electrochemical cycling. This high CS is originated from a combination of electrochemical double layer and pseudo-capacitance storage mechanisms. The presence of hydrated layered within some loose interlayer plays an important role in assisting the diffusion process of ions as confirmed in electrical impedance spectroscopy analysis.
| Item Type: | Article |
|---|---|
| Additional Information: | Indexed in Scopus, ISI. IF: 3.777 |
| Uncontrolled Keywords: | Alkali titanates; Electrochemistry; Energy storage; Renewable energy; Supercapacitor |
| Subjects: | Q Science > Q Science (General) Q Science > QD Chemistry |
| Faculty/Division: | Faculty of Industrial Sciences And Technology |
| Depositing User: | Prof. Dr. Mashitah Mohd Yusoff |
| Date Deposited: | 24 Mar 2014 02:40 |
| Last Modified: | 27 Jul 2018 03:22 |
| URI: | http://umpir.ump.edu.my/id/eprint/4702 |
| Download Statistic: | View Download Statistics |
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