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Zr4+-doped sodium manganese oxide: enhanced electrochemical performance as a cathode in sodium ion batteries.

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Title: Zr4+-doped sodium manganese oxide: enhanced electrochemical performance as a cathode in sodium ion batteries.
Authors: Kashyap, Bristisnata1,2 (AUTHOR), Dutta, Dimple P.1,2 (AUTHOR) dimpled@barc.gov.in, Modak, B.1,2 (AUTHOR), Kumar, Sanjay3 (AUTHOR), Ravuri, Balaji R.4 (AUTHOR)
Source: Dalton Transactions: An International Journal of Inorganic Chemistry. 1/28/2025, Vol. 54 Issue 4, p1476-1485. 10p.
Subjects: Electrochemical electrodes, Structural stability, Sodium ions, Spinel, Cathodes
Abstract: Sodium manganese oxides are regarded as a valuable class of cathode materials for sodium-ion batteries. By varying the stoichiometry of Na, Mn and O, it is possible to obtain layered, tunnel and spinel type structures, which can withstand the electrochemically-triggered sodiation–desodiation process. In this work, we report the electrochemical performance of Na4Mn2O5, a sodium-rich manganese oxide, which has been previously reported to suffer from structural instability due to the Jahn–Teller distortion of the Mn3+ ion. It was observed that the Na4Mn2−xZrxO5 (x = 0.1) cathode delivered a discharge capacity of ∼203 mA h g−1 post 250 cycles with a capacity retention rate of ∼82.8% on doping with Zr4+ ions. The improvement in cycling ability and rate capability is attributed to the enhanced structural stability and improved electronic conduction brought about by the substitution of Mn3+ by Zr4+ in Na4Mn2O5. Density functional theory-based studies were conducted, which adequately support the obtained results. [ABSTRACT FROM AUTHOR]
Copyright of Dalton Transactions: An International Journal of Inorganic Chemistry is the property of Royal Society of Chemistry and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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DbLabel: Engineering Source
An: 182342810
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
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  Label: Title
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  Data: Zr<superscript>4+</superscript>-doped sodium manganese oxide: enhanced electrochemical performance as a cathode in sodium ion batteries.
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  Data: <searchLink fieldCode="AR" term="%22Kashyap%2C+Bristisnata%22">Kashyap, Bristisnata</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Dutta%2C+Dimple+P%2E%22">Dutta, Dimple P.</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> dimpled@barc.gov.in</i><br /><searchLink fieldCode="AR" term="%22Modak%2C+B%2E%22">Modak, B.</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Kumar%2C+Sanjay%22">Kumar, Sanjay</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Ravuri%2C+Balaji+R%2E%22">Ravuri, Balaji R.</searchLink><relatesTo>4</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Dalton+Transactions%3A+An+International+Journal+of+Inorganic+Chemistry%22">Dalton Transactions: An International Journal of Inorganic Chemistry</searchLink>. 1/28/2025, Vol. 54 Issue 4, p1476-1485. 10p.
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  Data: <searchLink fieldCode="DE" term="%22Electrochemical+electrodes%22">Electrochemical electrodes</searchLink><br /><searchLink fieldCode="DE" term="%22Structural+stability%22">Structural stability</searchLink><br /><searchLink fieldCode="DE" term="%22Sodium+ions%22">Sodium ions</searchLink><br /><searchLink fieldCode="DE" term="%22Spinel%22">Spinel</searchLink><br /><searchLink fieldCode="DE" term="%22Cathodes%22">Cathodes</searchLink>
– Name: Abstract
  Label: Abstract
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  Data: Sodium manganese oxides are regarded as a valuable class of cathode materials for sodium-ion batteries. By varying the stoichiometry of Na, Mn and O, it is possible to obtain layered, tunnel and spinel type structures, which can withstand the electrochemically-triggered sodiation–desodiation process. In this work, we report the electrochemical performance of Na4Mn2O5, a sodium-rich manganese oxide, which has been previously reported to suffer from structural instability due to the Jahn–Teller distortion of the Mn3+ ion. It was observed that the Na4Mn2−xZrxO5 (x = 0.1) cathode delivered a discharge capacity of ∼203 mA h g−1 post 250 cycles with a capacity retention rate of ∼82.8% on doping with Zr4+ ions. The improvement in cycling ability and rate capability is attributed to the enhanced structural stability and improved electronic conduction brought about by the substitution of Mn3+ by Zr4+ in Na4Mn2O5. Density functional theory-based studies were conducted, which adequately support the obtained results. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
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  Data: <i>Copyright of Dalton Transactions: An International Journal of Inorganic Chemistry is the property of Royal Society of Chemistry and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1039/d4dt02894e
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      – Code: eng
        Text: English
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        PageCount: 10
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        Type: general
      – SubjectFull: Structural stability
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      – SubjectFull: Sodium ions
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      – SubjectFull: Spinel
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      – SubjectFull: Cathodes
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              M: 01
              Text: 1/28/2025
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              Y: 2025
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