Unveiling the sodium intercalation properties in Na1.86□0.14Fe3(PO4)3

R. Essehli; H. Ben Yahia; K. Maher; M. T. Sougrati; A. Abouimrane; J. B. Park; Y. K. Sun; M. A. Al-Maadeed; I. Belharouak

doi:10.1016/j.jpowsour.2016.05.125

Unveiling the sodium intercalation properties in Na_1.86□_0.14Fe₃(PO₄)₃

R. Essehli, H. Ben Yahia, K. Maher, M. T. Sougrati, A. Abouimrane, J. B. Park, Y. K. Sun, M. A. Al-Maadeed, I. Belharouak

Research output: Contribution to journal › Article › peer-review

37 Scopus citations

Abstract

The new compound Na_1.86□_0.14Fe₃(PO₄)₃ was successfully synthesized via hydrothermal synthesis and its crystal structure was determined using powder X-ray diffraction data. Na_1.86Fe₃(PO₄)₃ was also characterized by operando XRD and Mössbauer spectroscopy, cyclic voltammetry, and galvanostatic cycling. Na_1.86Fe₃(PO₄)₃ crystallizes with the alluaudite-type structure with the eight coordinated Na1 and Na2 sodium atoms located within the channels. The combination of the Rietveld- and Mössbauer-analyses confirms that the sodium vacancies in the Na1 site are linked to a partial oxidation of Fe²⁺ during synthesis. The electrochemical tests indicated that Na_1.86Fe₃(PO₄)₃ is a 3 V sodium intercalating cathode. At the current densities of 5, 10, and 20 mA g⁻¹, the material delivers the specific capacities of 109, 97, and 80 mA h g⁻¹, respectively. After 100 charge and discharge cycles, Na_1.86Fe₃(PO₄)₃ exhibited good sodium removal and uptake behavior although no optimizations of particle size, morphology, and carbon coating were performed.

Original language	English
Pages (from-to)	657-664
Number of pages	8
Journal	Journal of Power Sources
Volume	324
DOIs	https://doi.org/10.1016/j.jpowsour.2016.05.125
State	Published - Aug 30 2016
Externally published	Yes

Funding

The authors thank Qatar Foundation for the financial support allocated to the field of electrochemical energy storage. They also thank the Center for Advanced Materials (CAM) in Qatar University for carrying out experiments.

Funders	Funder number
Qatar Foundation

Keywords

Intercalation
NaFe(PO)
Phosphate
Positive electrode
Sodium ion batteries

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.jpowsour.2016.05.125

Cite this

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title = "Unveiling the sodium intercalation properties in Na1.86□0.14Fe3(PO4)3",

abstract = "The new compound Na1.86□0.14Fe3(PO4)3 was successfully synthesized via hydrothermal synthesis and its crystal structure was determined using powder X-ray diffraction data. Na1.86Fe3(PO4)3 was also characterized by operando XRD and M{\"o}ssbauer spectroscopy, cyclic voltammetry, and galvanostatic cycling. Na1.86Fe3(PO4)3 crystallizes with the alluaudite-type structure with the eight coordinated Na1 and Na2 sodium atoms located within the channels. The combination of the Rietveld- and M{\"o}ssbauer-analyses confirms that the sodium vacancies in the Na1 site are linked to a partial oxidation of Fe2+ during synthesis. The electrochemical tests indicated that Na1.86Fe3(PO4)3 is a 3 V sodium intercalating cathode. At the current densities of 5, 10, and 20 mA g−1, the material delivers the specific capacities of 109, 97, and 80 mA h g−1, respectively. After 100 charge and discharge cycles, Na1.86Fe3(PO4)3 exhibited good sodium removal and uptake behavior although no optimizations of particle size, morphology, and carbon coating were performed.",

keywords = "Intercalation, NaFe(PO), Phosphate, Positive electrode, Sodium ion batteries",

author = "R. Essehli and {Ben Yahia}, H. and K. Maher and Sougrati, {M. T.} and A. Abouimrane and Park, {J. B.} and Sun, {Y. K.} and Al-Maadeed, {M. A.} and I. Belharouak",

note = "Publisher Copyright: {\textcopyright} 2016 Elsevier B.V.",

year = "2016",

month = aug,

day = "30",

doi = "10.1016/j.jpowsour.2016.05.125",

language = "English",

volume = "324",

pages = "657--664",

journal = "Journal of Power Sources",

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TY - JOUR

T1 - Unveiling the sodium intercalation properties in Na1.86□0.14Fe3(PO4)3

AU - Essehli, R.

AU - Ben Yahia, H.

AU - Maher, K.

AU - Sougrati, M. T.

AU - Abouimrane, A.

AU - Park, J. B.

AU - Sun, Y. K.

AU - Al-Maadeed, M. A.

AU - Belharouak, I.

PY - 2016/8/30

Y1 - 2016/8/30

N2 - The new compound Na1.86□0.14Fe3(PO4)3 was successfully synthesized via hydrothermal synthesis and its crystal structure was determined using powder X-ray diffraction data. Na1.86Fe3(PO4)3 was also characterized by operando XRD and Mössbauer spectroscopy, cyclic voltammetry, and galvanostatic cycling. Na1.86Fe3(PO4)3 crystallizes with the alluaudite-type structure with the eight coordinated Na1 and Na2 sodium atoms located within the channels. The combination of the Rietveld- and Mössbauer-analyses confirms that the sodium vacancies in the Na1 site are linked to a partial oxidation of Fe2+ during synthesis. The electrochemical tests indicated that Na1.86Fe3(PO4)3 is a 3 V sodium intercalating cathode. At the current densities of 5, 10, and 20 mA g−1, the material delivers the specific capacities of 109, 97, and 80 mA h g−1, respectively. After 100 charge and discharge cycles, Na1.86Fe3(PO4)3 exhibited good sodium removal and uptake behavior although no optimizations of particle size, morphology, and carbon coating were performed.

AB - The new compound Na1.86□0.14Fe3(PO4)3 was successfully synthesized via hydrothermal synthesis and its crystal structure was determined using powder X-ray diffraction data. Na1.86Fe3(PO4)3 was also characterized by operando XRD and Mössbauer spectroscopy, cyclic voltammetry, and galvanostatic cycling. Na1.86Fe3(PO4)3 crystallizes with the alluaudite-type structure with the eight coordinated Na1 and Na2 sodium atoms located within the channels. The combination of the Rietveld- and Mössbauer-analyses confirms that the sodium vacancies in the Na1 site are linked to a partial oxidation of Fe2+ during synthesis. The electrochemical tests indicated that Na1.86Fe3(PO4)3 is a 3 V sodium intercalating cathode. At the current densities of 5, 10, and 20 mA g−1, the material delivers the specific capacities of 109, 97, and 80 mA h g−1, respectively. After 100 charge and discharge cycles, Na1.86Fe3(PO4)3 exhibited good sodium removal and uptake behavior although no optimizations of particle size, morphology, and carbon coating were performed.

KW - Intercalation

KW - NaFe(PO)

KW - Phosphate

KW - Positive electrode

KW - Sodium ion batteries

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