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Title: Single-crystalline nanotubes of spinel lithium nickel manganese oxide with lithium titanate anode for high-rate lithium ion batteries
Authors: Ding, Y.-L.
Goh, B.M.
Zhang, H.
Loh, K.P. 
Lu, L. 
Keywords: Lithium ion batteries
Lithium nickel manganese oxide
Issue Date: 2013
Citation: Ding, Y.-L., Goh, B.M., Zhang, H., Loh, K.P., Lu, L. (2013). Single-crystalline nanotubes of spinel lithium nickel manganese oxide with lithium titanate anode for high-rate lithium ion batteries. Journal of Power Sources 236 : 1-9. ScholarBank@NUS Repository.
Abstract: Single-crystalline nanotubes of LiNi0.473Mn 1.473Al0.054O4 (LNMAO-NT) have been synthesized and evaluated as cathode using LNMAO-NT/Li half cell and LNMAO-NT/Li 4Ti5O12 (LTO) full cell, respectively. Galvanostatic charge/discharge tests show that the LNMAO-NT half cell exhibits discharge capacity of 118 mAh g-1 and specific energy (calculated only based on the cathode material) of 508 Wh kg-1 at 5 C. Two types of full cells (LTO-limited and LNMAO-NT-limited cell) are constructed using three-electrode configuration. Measurement results reveal that LTO-limited full cell has a lower cathode potential vs. Li metal than LNMAO-NT-limited one at the end of cutoff voltage. The LNMAO-NT/LTO full cell exhibits discharge capacity of 158 mAh g-1 at 0.5 C and 120 mAh g-1 at 10 C, respectively, showing superior high-rate capability of LNMAO-NT. In addition, 87% of capacity retention of the LNMAO-NT/LTO full cell can be achieved after 200 cycles at 5 C, indicating good structural stability of one dimensional LNMAO-NT. Moreover, study of in situ Raman spectra at different potentials reveals good structural reversibility during charging and discharging process, indicating that LNMAO-NT would be one of the most promising high-voltage cathodes for high power lithium ion batteries. © 2013 Elsevier B.V. All rights reserved.
Source Title: Journal of Power Sources
ISSN: 03787753
DOI: 10.1016/j.jpowsour.2013.02.047
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