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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/12599
Title: 3-dimensional carbon nanotube for Li-ion battery anode
Authors: Kang C.
Lahiri, Indranil
Baskaran R.
Kim W.-G.
Sun Y.-K.
Choi W.
Published in: Journal of Power Sources
Abstract: Carbon nanotubes, in different forms and architectures, have demonstrated good promise as electrode material for Li-ion batteries, owing to large surface area, shorter Li-conduction distance and high electrical conductivity. However, practical application of such Li-ion batteries demands higher volumetric capacity, which is otherwise low for most nanomaterials, used as electrodes. In order to address this urgent issue, we have developed a novel 3-dimensional (3D) anode, based on multiwall carbon nanotubes (MWCNTs), for Li-ion batteries. The unique 3D design of the electrode allowed much higher solid loading of active anode material, MWCNTs in this case and resulted in more amount of Li + ion intake in comparison to those of conventional 2D Cu current collector. Though one such 3D anode was demonstrated to offer 50% higher capacity, compared to its 2D counterpart, its ability to deliver much higher capacity, by geometrical modification, is presented. Furthermore, deposition of amorphous Si (a-Si) layer on the 3D electrode (a-Si/MWCNTs hybrid structure) offered enhancement in electrochemical response. Correlation between electrochemical performances and structural properties of the 3D anodes highlights the possible charge transfer mechanism. © 2012 Elsevier B.V. All rights reserved.
Citation: Journal of Power Sources (2012), 219(): 364-370
URI: https://doi.org/10.1016/j.jpowsour.2012.07.050
http://repository.iitr.ac.in/handle/123456789/12599
Issue Date: 2012
Keywords: 3D Cu current collector
a-Si/MWCNTs composite
Amorphous Si
Anode materials
Carbon nanotubes
Li-ion batteries
ISSN: 3787753
Author Scopus IDs: 40761501500
7004250718
55211843300
57199880931
55551960800
57202287300
Author Affiliations: Kang, C., Nanomaterials and Device Laboratory, Department of Mechanical and Materials Engineering, Florida International University, 10555 West Flagler Street, Miami, FL 33174, United States
Lahiri, I., Nanomaterials and Device Laboratory, Department of Mechanical and Materials Engineering, Florida International University, 10555 West Flagler Street, Miami, FL 33174, United States
Baskaran, R., Department of Energy Engineering, Hanyang University, 17 Haengdang-dong, Seongdong-gu, Seoul 133-791, South Korea
Kim, W.-G., Department of Energy Engineering, Hanyang University, 17 Haengdang-dong, Seongdong-gu, Seoul 133-791, South Korea
Sun, Y.-K., Department of Energy Engineering, Hanyang University, 17 Haengdang-dong, Seongdong-gu, Seoul 133-791, South Korea
Choi, W., Nanomaterials and Device Laboratory, Department of Mechanical and Materials Engineering, Florida International University, 10555 West Flagler Street, Miami, FL 33174, United States, Department of Energy Engineering, Hanyang University, 17 Haengdang-dong, Seongdong-gu, Seoul 133-791, South Korea, Department of Materials Science and Engineering, University of North Texas, North Texas Discovery Park, 3940 North Elm St., Denton, TX 76207, United States
Funding Details: Authors thank N. Ricks and Y. Liu for Nano fabrication facility and FESEM characterization, S. Saxena for allowing to use the Raman facility and J. Hwang and R. Banerjee for HRTEM characterization. It is grateful that J. Kim and D. Kim who provided us with the schematic diagrams. This research was, in part, supported by WCU (World Class University) program through the Korea Science and Engineering Foundation funded by the Ministry of Education, Science and Technology ( R31-2008-000-10092 ) and AFOSR Grant ( FA9550-09-1-0544 ). Appendix A
Corresponding Author: Choi, W.; Nanomaterials and Device Laboratory, Department of Mechanical and Materials Engineering, Florida International University, 10555 West Flagler Street, Miami, FL 33174, United States; email: choiw@fiu.edu
Appears in Collections:Journal Publications [MT]

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