An alluaudite Na-2+Fe-2x(2-x)(SO4)(3)(x=0.2) derivative phase as insertion host for lithium battery
Data(s) |
2015
|
---|---|
Resumo |
A new desodiated derivative compound, Na0.89Fe1.8(SO4)(3), was prepared by the chemical oxidation of alluaudite Na2.4Fe1.8(SO4)(3) Phase using NOBF4 as oxidant. The structure and valency of Fe were characterized by X-ray diffraction (XRD) and Fe-57 Mossbauer spectroscopy. Intercalation behavior of lithium ions in the structure of Na0.89Fe1.8(SO4)(3) was gauged by electrochemical analyses and ex-situ X-ray diffraction. A high capacity of 110 mAh g(-1) at 0.1 C was obtained with a good rate kinetics within a range of 0.1-10 C(1 C = 118 mAh g-1) involving a high Fe3+/Fe2+ redox potential of 3.75 V (vs. Li/Li+). These results confirmed that the Na2.4-delta Fe1.8(SO4)(3) framework was stable even after oxidation and forms a new competitive cathode for the reversible intercalation of lithium ions. (C) 2014 Elsevier B.V. All rights reserved. |
Formato |
application/pdf |
Identificador |
http://eprints.iisc.ernet.in/51138/1/ele_com_51_19_2015.pdf Ming, Jun and Barpanda, Prabeer and Nishimura, Shin-ichi and Okubo, Masashi and Yamada, Atsuo (2015) An alluaudite Na-2+Fe-2x(2-x)(SO4)(3)(x=0.2) derivative phase as insertion host for lithium battery. In: ELECTROCHEMISTRY COMMUNICATIONS, 51 . pp. 19-22. |
Publicador |
ELSEVIER SCIENCE INC |
Relação |
http://eprints.iisc.ernet.in/51138/ |
Palavras-Chave | #Materials Research Centre |
Tipo |
Journal Article PeerReviewed |