Aligned Titania Nanotubes as an Intercalation Anode Material for Hybrid Electrochemical Energy Storage

Wang, Da-Wei, Fang, Hai-Tao, Li, Feng, Chen, Zhi-Gang, Zhong, Qi-Sheng, Lu, Gao Qing and Cheng, Hui-Ming (2008) Aligned Titania Nanotubes as an Intercalation Anode Material for Hybrid Electrochemical Energy Storage. Advanced Functional Materials, 18 23: 3787-3793. doi:10.1002/adfm.200800635


Author Wang, Da-Wei
Fang, Hai-Tao
Li, Feng
Chen, Zhi-Gang
Zhong, Qi-Sheng
Lu, Gao Qing
Cheng, Hui-Ming
Title Aligned Titania Nanotubes as an Intercalation Anode Material for Hybrid Electrochemical Energy Storage
Journal name Advanced Functional Materials   Check publisher's open access policy
ISSN 1616-301X
1616-3028
Publication date 2008-12-08
Year available 2008
Sub-type Article (original research)
DOI 10.1002/adfm.200800635
Open Access Status Not yet assessed
Volume 18
Issue 23
Start page 3787
End page 3793
Total pages 7
Editor P. Gregory
Place of publication Germany
Publisher Wiley-v C H Verlag Gmbh
Language eng
Subject C1
850602 Energy Storage (excl. Hydrogen)
100708 Nanomaterials
Abstract A new hybrid electrochemical cell incorporating aligned titania nanotubes (ATNTs) as the anode and ordered mesoporous carbon (OMC) as the cathode is demonstrated. The concept is characterized by the optimization of ionic transport in the anode and ionic uptake in the cathode. The ionic transport in the anode can be enhanced by reducing the tube length and wall thickness of the ATNTs. The ionic transport and uptake at the cathode is significantly improved by the combination of ordered mesopores and high specific surface area in the OMC. Remarkably, these hybrid electrochemical energy storage cells are capable of delivering a high energy density of 25 W h kg(-1) and a high power density of 3000 W kg(-1) at a short current-draining time of 30s, more than two times higher than in previously reported hybrid cells. Another advantage of these hybrid cells is that they are safe and stable for long periods of operation owing to the absence of dendrite lithium metal and a solid electrolyte interphase. In terms of the fundamental electrochemistry, the superior performance of the hybrid cells is attributed to shortened electrolyte penetration depth and lithium ion diffusion distance in the ATNT anode, facilitating an effective lithiation anode process, and to the fast anion uptake at the cathode.
Keyword electrodes
energy storage
inorganic nanotubes
mesoporous carbon
porous materials
supercapacitors
titania
Q-Index Code C1
Q-Index Status Confirmed Code
Grant ID 50632040
Institutional Status UQ

 
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Created: Mon, 06 Apr 2009, 21:51:13 EST by Vicki Thompson on behalf of School of Chemical Engineering