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TiO2 (B)/activated carbon non-aqueous hybrid system for energy storage

Brousse, Thierry and Marchand, René and Taberna, Pierre-Louis and Simon, Patrice TiO2 (B)/activated carbon non-aqueous hybrid system for energy storage. (2006) Journal of power sources , vol. 1 (n° 1). pp. 571-577. ISSN 0378-7753

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Official URL: http://dx.doi.org/10.1016/j.jpowsour.2005.09.020

Abstract

TiO2 (B) has been investigated as a possible candidate to replace Li4Ti5O12 as a negative electrode for Li-ion battery. The starting compound was synthesized by a simple solid state reaction followed by hydrolysis. Long term stability of the TiO2 (B) electrode can be obtained by limiting lithium intercalation between 0.25 and 0.35 Li+ per unit formula. High cycling rates (up to 24C) have been used without noticeable degradation of the electrode. A non-aqueous hybrid energy storage device using TiO2 (B) as the negative electrode and activated carbon as the positive was assembled. The maximum hybrid cell voltage can be set between 2.75 V and 3.5 V. The cells exhibit energy densities between 45 W kg-1 and 80 W kg-1 with power densities in the range 240-420 W kg-1which is compatible with a fast charging/discharging storage device, intermediate between electrochemical double layer capacitor and Li-ion batteries.

Item Type:Article
Additional Information:This publication is available on http://www.sciencedirect.com/science/journal/03787753
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT
Université de Toulouse > Université Paul Sabatier-Toulouse III - UPS
Other partners > Université de Nantes (FRANCE)
Laboratory name:
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Deposited By:Thomas Bonnecarere

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