Structural changes upon lithium insertion in Ni 0.5TiOPO 4

Rachid Essehli, B. El Bali, A. Faik, S. Benmokhtar, B. Manoun, Y. Zhang, X. J. Zhang, Z. Zhou, H. Fuess

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

Nickel titanium oxyphosphate Ni 0.5TiOPO 4 (NTP), was prepared by co-precipitation route. Its structure was determined by single crystal X-ray diffraction. The compound crystallizes in the monoclinic system, S.G: P2 1/c [a = 7.333(1), b = 7.316(2), c = 7.339(2), β = 119.62(3)°, Z = 4, R 1 = 0.0142, wR 2 = 0.0429]. The structure might be described as a {TiOPO 4} framework made of corner-sharing [TiO 6] octahedra chains running parallel to [0 0 1] and cross linked by phosphate [PO 4] tetrahedral, where half of octahedral cavities created are occupied by Ni atoms, and the other half of octahedral sites are vacant. During the first discharge, the NTP electrode delivered a capacity of 530 mAh/g, upon cycling within 0.5-4 V. To understand the electrochemical reaction mechanism using different characterization techniques viz. in situ synchrotron diffraction. Reciprocal magnetic susceptibility (χ -1) of NTP, between 4 and 300 K, shows an almost linear behavior and can be fitted by the simple Curie-Weiss law.

Original languageEnglish
Pages (from-to)178-185
Number of pages8
JournalJournal of Alloys and Compounds
Volume530
DOIs
Publication statusPublished - 25 Jul 2012
Externally publishedYes

Fingerprint

Coprecipitation
Synchrotrons
Magnetic susceptibility
Lithium
Phosphates
Titanium
Diffraction
Nickel
Single crystals
X ray diffraction
Atoms
Electrodes
nitinol

Keywords

  • In situ synchrotron diffraction
  • Lithium ion batteries
  • Magnetic measurements
  • Oxyphosphate

ASJC Scopus subject areas

  • Mechanical Engineering
  • Mechanics of Materials
  • Materials Chemistry
  • Metals and Alloys

Cite this

Essehli, R., El Bali, B., Faik, A., Benmokhtar, S., Manoun, B., Zhang, Y., ... Fuess, H. (2012). Structural changes upon lithium insertion in Ni 0.5TiOPO 4 Journal of Alloys and Compounds, 530, 178-185. https://doi.org/10.1016/j.jallcom.2012.03.103

Structural changes upon lithium insertion in Ni 0.5TiOPO 4 . / Essehli, Rachid; El Bali, B.; Faik, A.; Benmokhtar, S.; Manoun, B.; Zhang, Y.; Zhang, X. J.; Zhou, Z.; Fuess, H.

In: Journal of Alloys and Compounds, Vol. 530, 25.07.2012, p. 178-185.

Research output: Contribution to journalArticle

Essehli, R, El Bali, B, Faik, A, Benmokhtar, S, Manoun, B, Zhang, Y, Zhang, XJ, Zhou, Z & Fuess, H 2012, 'Structural changes upon lithium insertion in Ni 0.5TiOPO 4 ', Journal of Alloys and Compounds, vol. 530, pp. 178-185. https://doi.org/10.1016/j.jallcom.2012.03.103
Essehli, Rachid ; El Bali, B. ; Faik, A. ; Benmokhtar, S. ; Manoun, B. ; Zhang, Y. ; Zhang, X. J. ; Zhou, Z. ; Fuess, H. / Structural changes upon lithium insertion in Ni 0.5TiOPO 4 In: Journal of Alloys and Compounds. 2012 ; Vol. 530. pp. 178-185.
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