NaFe3(HPO3)2((H,F)PO2OH)6: a potential cathode material and a novel ferrimagnet

Irene Munao; Elena Zvereva; Olga Volkova; Alexander Vasiliev; Robert Armstrong; Philip Lightfoot

doi:10.1021/acs.inorgchem.5b02922

NaFe₃(HPO₃)₂((H,F)PO₂OH)₆: a potential cathode material and a novel ferrimagnet

Irene Munao, Elena Zvereva, Olga Volkova, Alexander Vasiliev, Robert Armstrong, Philip Lightfoot

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

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Abstract

A novel iron fluorophosphite, NaFe₃(HPO₃)₂((H,F)PO₂OH)₆, was synthesized by a dry low-temperature synthesis route. The phase was shown to be electrochemically active for reversible insertion of Na⁺ ions, with an average discharge voltage of 2.5 V and an experimental capacity at low rates of up to 90 mAhg⁻¹. Simple synthesis, low-cost materials, excellent capacity retention, and efficiency suggest this class of material is competitive with similar oxyanion-based compounds as a cathode material for Na batteries. The characterization of physical properties by means of magnetization, specific heat, and electron spin resonance measurements confirms the presence of two magnetically nonequivalent Fe³⁺ sites. The compound orders magnetically at T_C ≈ 9.4 K into a state with spontaneous magnetization.

Original language	English
Pages (from-to)	2558-2564
Number of pages	7
Journal	Inorganic Chemistry
Volume	55
Issue number	5
Early online date	16 Feb 2016
DOIs	https://doi.org/10.1021/acs.inorgchem.5b02922
Publication status	Published - 7 Mar 2016

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10.1021/acs.inorgchem.5b02922

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Copyright © 2016 American Chemical Society. This work is made available online in accordance with the publisher’s policies. This is the author created, accepted version manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at https://dx.doi.org/10.1021/acs.inorgchem.5b02922
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Cite this

@article{bca3bc8e887b4f83bc8ee915f67bf226,

title = "NaFe3(HPO3)2((H,F)PO2OH)6: a potential cathode material and a novel ferrimagnet",

abstract = "A novel iron fluorophosphite, NaFe3(HPO3)2((H,F)PO2OH)6, was synthesized by a dry low-temperature synthesis route. The phase was shown to be electrochemically active for reversible insertion of Na+ ions, with an average discharge voltage of 2.5 V and an experimental capacity at low rates of up to 90 mAhg−1. Simple synthesis, low-cost materials, excellent capacity retention, and efficiency suggest this class of material is competitive with similar oxyanion-based compounds as a cathode material for Na batteries. The characterization of physical properties by means of magnetization, specific heat, and electron spin resonance measurements confirms the presence of two magnetically nonequivalent Fe3+ sites. The compound orders magnetically at TC ≈ 9.4 K into a state with spontaneous magnetization.",

author = "Irene Munao and Elena Zvereva and Olga Volkova and Alexander Vasiliev and Robert Armstrong and Philip Lightfoot",

note = "The authors thank the University of St Andrews and EPSRC (EP/K503162/1) for partial support of a studentship to I.M. The work was supported by the RFBR (grants 14-02-00245, 14-02-00111. The Russian team acknowledge support from the Ministry of Education and Science of the Russian Federation in the framework Increase Competitiveness Program of NUST «MISiS» (№ К4-2015-020 and К2-2015-075) and by Act 211 Government of the Russian Federation, contract(№ 02.A03.21.0006).",

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doi = "10.1021/acs.inorgchem.5b02922",

language = "English",

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T1 - NaFe3(HPO3)2((H,F)PO2OH)6

T2 - a potential cathode material and a novel ferrimagnet

AU - Munao, Irene

AU - Zvereva, Elena

AU - Volkova, Olga

AU - Vasiliev, Alexander

AU - Armstrong, Robert

AU - Lightfoot, Philip

N1 - The authors thank the University of St Andrews and EPSRC (EP/K503162/1) for partial support of a studentship to I.M. The work was supported by the RFBR (grants 14-02-00245, 14-02-00111. The Russian team acknowledge support from the Ministry of Education and Science of the Russian Federation in the framework Increase Competitiveness Program of NUST «MISiS» (№ К4-2015-020 and К2-2015-075) and by Act 211 Government of the Russian Federation, contract(№ 02.A03.21.0006).

PY - 2016/3/7

Y1 - 2016/3/7

N2 - A novel iron fluorophosphite, NaFe3(HPO3)2((H,F)PO2OH)6, was synthesized by a dry low-temperature synthesis route. The phase was shown to be electrochemically active for reversible insertion of Na+ ions, with an average discharge voltage of 2.5 V and an experimental capacity at low rates of up to 90 mAhg−1. Simple synthesis, low-cost materials, excellent capacity retention, and efficiency suggest this class of material is competitive with similar oxyanion-based compounds as a cathode material for Na batteries. The characterization of physical properties by means of magnetization, specific heat, and electron spin resonance measurements confirms the presence of two magnetically nonequivalent Fe3+ sites. The compound orders magnetically at TC ≈ 9.4 K into a state with spontaneous magnetization.

AB - A novel iron fluorophosphite, NaFe3(HPO3)2((H,F)PO2OH)6, was synthesized by a dry low-temperature synthesis route. The phase was shown to be electrochemically active for reversible insertion of Na+ ions, with an average discharge voltage of 2.5 V and an experimental capacity at low rates of up to 90 mAhg−1. Simple synthesis, low-cost materials, excellent capacity retention, and efficiency suggest this class of material is competitive with similar oxyanion-based compounds as a cathode material for Na batteries. The characterization of physical properties by means of magnetization, specific heat, and electron spin resonance measurements confirms the presence of two magnetically nonequivalent Fe3+ sites. The compound orders magnetically at TC ≈ 9.4 K into a state with spontaneous magnetization.

UR - http://pubs.acs.org/doi/suppl/10.1021/acs.inorgchem.5b02922

U2 - 10.1021/acs.inorgchem.5b02922

DO - 10.1021/acs.inorgchem.5b02922

M3 - Article

SN - 0020-1669

VL - 55

SP - 2558

EP - 2564

JO - Inorganic Chemistry

JF - Inorganic Chemistry

IS - 5

ER -

NaFe₃(HPO₃)₂((H,F)PO₂OH)₆: a potential cathode material and a novel ferrimagnet

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NaFe3(HPO3)2((H,F)PO2OH)6: a potential cathode material and a novel ferrimagnet

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NaFe₃(HPO₃)₂((H,F)PO₂OH)₆: a potential cathode material and a novel ferrimagnet