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Choi, Nam-Soon
Energy Materials Lab
Research Interests
  • Rechargeable lithium battery, electrolytes for next generation Mg and Na battery

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Trigonal Na4Ti5O12 Phase as an Intercalation Host for Rechargeable Batteries

Cited 9 times inthomson ciCited 4 times inthomson ci
Title
Trigonal Na4Ti5O12 Phase as an Intercalation Host for Rechargeable Batteries
Author
Woo, Seung HeePark, YuwonChoi, Woo YeongChoi, Nam-SoonNam, SeunghoonPark, ByungwooLee, Kyu Tae
Issue Date
2012-12
Publisher
ELECTROCHEMICAL SOC INC
Citation
JOURNAL OF THE ELECTROCHEMICAL SOCIETY, v.159, no.12, pp.A2016 - A2023
Abstract
Trigonal Na4Ti5O12 with a tunnel-structured three-dimensional framework was first examined as an anode material for Li ion batteries. The nanosized Na4Ti5O12 was synthesized at 600 degrees C using the solid state method with carbon-coated nanosized TiO2 anatase. Carbon layers on TiO2 play an important role of inhibiting the growth of Na4Ti5O12 particles. Li ions are reversibly de/intercalated in the Na4Ti5O12 structure, and this shows the reversible capacity of ca. 100 mA h g(-1) with no capacity fading over 100 cycles. During the repeated charge and discharge, the ion exchange between Na ion and Li ion happens to form LixNa4-xTi5O12, and this causes an increase of the relative tunnel size due to smaller Li ion, resulting in decreasing polarization of voltage profiles. Also, trigonal Na4Ti5O12 was additionally examined as an anode for Na ion batteries.
URI
https://scholarworks.unist.ac.kr/handle/201301/2639
URL
http://jes.ecsdl.org/content/159/12/A2016
DOI
10.1149/2.009301jes
ISSN
0013-4651
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ECHE_Journal Papers
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