Enabling the Electrochemical Activity in Sodium Iron Metaphosphate [NaFe(PO3)3] Sodium Battery Insertion Material: Structural and Electrochemical Insights

Ritambhara Gond, Sher Singh Meena, S. M. Yusuf, Vivekanand Shukla, Naresh K. Jena, Rajeev Ahuja, Shigeto Okada, Prabeer Barpanda

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Sodium-ion batteries are widely pursued as an economic alternative to lithium-ion battery technology, where Fe- and Mn-based compounds are particularly attractive owing to their elemental abundance. Pursuing phosphate-based polyanionic chemistry, recently solid-state prepared NaFe(PO3)3 metaphosphate was unveiled as a novel potential sodium insertion material, although it was found to be electrochemically inactive. In the current work, employing energy-savvy solution combustion synthesis, NaFe2+(PO3)3 was produced from low-cost Fe3+ precursors. Owing to the formation of nanoscale carbon-coated product, electrochemical activity was enabled in NaFe(PO3)3 for the first time. In congruence with the first principles density functional theory (DFT) calculations, an Fe3+/Fe2+ redox activity centered at 2.8 V (vs Na/Na+) was observed. Further, the solid-solution metaphosphate family Na(Fe1-xMnx)(PO3)3 (x = 0-1) was prepared for the first time. Their structure and distribution of transition metals (TM = Fe/Mn) was analyzed with synchrotron diffraction, X-ray photoelectron spectroscopy, and Mössbauer spectroscopy. Synergizing experimental and computational tools, NaFe(PO3)3 metaphosphate is presented as an electrochemically active sodium insertion host material.

Original languageEnglish
Pages (from-to)5918-5929
Number of pages12
JournalInorganic chemistry
Volume56
Issue number10
DOIs
Publication statusPublished - May 15 2017

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electric batteries
insertion
Iron
Sodium
sodium
iron
congruences
combustion synthesis
Combustion synthesis
Synchrotrons
Transition metals
Density functional theory
economics
Solid solutions
phosphates
synchrotrons
ions
solid solutions
Carbon
X ray photoelectron spectroscopy

All Science Journal Classification (ASJC) codes

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry

Cite this

Enabling the Electrochemical Activity in Sodium Iron Metaphosphate [NaFe(PO3)3] Sodium Battery Insertion Material : Structural and Electrochemical Insights. / Gond, Ritambhara; Meena, Sher Singh; Yusuf, S. M.; Shukla, Vivekanand; Jena, Naresh K.; Ahuja, Rajeev; Okada, Shigeto; Barpanda, Prabeer.

In: Inorganic chemistry, Vol. 56, No. 10, 15.05.2017, p. 5918-5929.

Research output: Contribution to journalArticle

Gond, Ritambhara ; Meena, Sher Singh ; Yusuf, S. M. ; Shukla, Vivekanand ; Jena, Naresh K. ; Ahuja, Rajeev ; Okada, Shigeto ; Barpanda, Prabeer. / Enabling the Electrochemical Activity in Sodium Iron Metaphosphate [NaFe(PO3)3] Sodium Battery Insertion Material : Structural and Electrochemical Insights. In: Inorganic chemistry. 2017 ; Vol. 56, No. 10. pp. 5918-5929.
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