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

^*Corresponding author for this work

QEERI - Energy Center

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

40 Citations (Scopus)

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
Publication status	Published - 30 Aug 2016

Keywords

Intercalation
NaFe(PO)
Phosphate
Positive electrode
Sodium ion batteries

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10.1016/j.jpowsour.2016.05.125

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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",

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

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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

UR - https://www.scopus.com/pages/publications/84989883759

U2 - 10.1016/j.jpowsour.2016.05.125

DO - 10.1016/j.jpowsour.2016.05.125

M3 - Article

AN - SCOPUS:84989883759

SN - 0378-7753

VL - 324

SP - 657

EP - 664

JO - Journal of Power Sources

JF - Journal of Power Sources

ER -

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

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Keywords

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