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Mechanochemical synthesis and electrochemical behavior of Na3FeF6 in sodium and lithium batteries

Cited 24 time in Web of Science Cited 24 time in Scopus
Authors
Shakoor, R. A.; Lim, Soo Yeon; Kim, Hyungsub; Nam, Kwan-Woo; Kang, Jeung Ku; Kang, Kisuk; Choi, Jang Wook
Issue Date
2012-06
Citation
Solid State Ionics, Vol.218, pp.35-40
Keywords
Sodium iron fluorideSodium and lithium batteriesCathodeMechanochemical process
Abstract
We report Na3FeF6 as a novel cathode material for sodium and lithium batteries. The material is synthesized through a mechanochemical process by reacting precursors (NaF and FeF3) in a ball mill under argon flow. These syntheses are environmentally friendly and safe because the entire processes do not require any hazardous gasses or high temperatures. XRD spectra confirm that the synthesized material has a well-defined crystal structure and can be indexed to a monoclinic crystal structure under the P2(1)/C space group. Thermal analyses up to 500 degrees C confirm the stability of the crystal structure and safety of this material. Electrochemical results indicate that Na3FeF6 is electrochemically active in both Na and Li cells while undergoing conversion reactions and exhibiting decent reversible capacities of larger than 100 and 200 mAh g(-1) at room temperature, respectively. (C) 2012 Elsevier B.V. All rights reserved.
ISSN
0167-2738
URI
http://hdl.handle.net/10371/165131
DOI
https://doi.org/10.1016/j.ssi.2012.05.002
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College of Engineering/Engineering Practice School (공과대학/대학원)Dept. of Material Science and Engineering (재료공학부) Journal Papers (저널논문_재료공학부)
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