Sodium extraction from NASICON-structured Na3MnTi(PO4)3 through Mn(III)/Mn(II) and Mn(IV)/Mn(III) redox couples

Hongcai Gao; Yutao Li; Kyusung Park; John B. Goodenough

doi:10.1021/acs.chemmater.6b02096

Sodium extraction from NASICON-structured Na₃MnTi(PO₄)₃ through Mn(III)/Mn(II) and Mn(IV)/Mn(III) redox couples

Hongcai Gao
, Yutao Li
, Kyusung Park
, John B. Goodenough^*

^*Corresponding author for this work

University of Texas at Austin

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

210 Citations (Scopus)

Abstract

Sodium extraction behavior in the rhombohedral Na₃MnTi(PO₄)₃ with the NASICON structure was investigated and shown to have a 0.5 eV separation of the localized-electron Mn³⁺/Mn²⁺ and Mn⁴⁺/Mn³⁺ redox energies. Used as a cathode in a sodium-ion half-cell, the redox couples of Mn³⁺/Mn²⁺ and Mn⁴⁺/Mn³⁺ exhibit two voltage plateaus located at about 3.6 and 4.1 V vs Na⁺/Na, respectively. Na₃MnTi(PO₄)₃ also exhibits a small volume change after the extraction of two sodium ions, and the NASICON structure is well-maintained after repeated extraction and insertion of sodium ions.

Original language	English
Pages (from-to)	6553-6559
Number of pages	7
Journal	Chemistry of Materials
Volume	28
Issue number	18
DOIs	https://doi.org/10.1021/acs.chemmater.6b02096
Publication status	Published - 27 Sept 2016
Externally published	Yes

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title = "Sodium extraction from NASICON-structured Na3MnTi(PO4)3 through Mn(III)/Mn(II) and Mn(IV)/Mn(III) redox couples",

abstract = "Sodium extraction behavior in the rhombohedral Na3MnTi(PO4)3 with the NASICON structure was investigated and shown to have a 0.5 eV separation of the localized-electron Mn3+/Mn2+ and Mn4+/Mn3+ redox energies. Used as a cathode in a sodium-ion half-cell, the redox couples of Mn3+/Mn2+ and Mn4+/Mn3+ exhibit two voltage plateaus located at about 3.6 and 4.1 V vs Na+/Na, respectively. Na3MnTi(PO4)3 also exhibits a small volume change after the extraction of two sodium ions, and the NASICON structure is well-maintained after repeated extraction and insertion of sodium ions.",

author = "Hongcai Gao and Yutao Li and Kyusung Park and Goodenough, \{John B.\}",

note = "Publisher Copyright: {\textcopyright} 2016 American Chemical Society.",

year = "2016",

month = sep,

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doi = "10.1021/acs.chemmater.6b02096",

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TY - JOUR

T1 - Sodium extraction from NASICON-structured Na3MnTi(PO4)3 through Mn(III)/Mn(II) and Mn(IV)/Mn(III) redox couples

AU - Gao, Hongcai

AU - Li, Yutao

AU - Park, Kyusung

AU - Goodenough, John B.

PY - 2016/9/27

Y1 - 2016/9/27

N2 - Sodium extraction behavior in the rhombohedral Na3MnTi(PO4)3 with the NASICON structure was investigated and shown to have a 0.5 eV separation of the localized-electron Mn3+/Mn2+ and Mn4+/Mn3+ redox energies. Used as a cathode in a sodium-ion half-cell, the redox couples of Mn3+/Mn2+ and Mn4+/Mn3+ exhibit two voltage plateaus located at about 3.6 and 4.1 V vs Na+/Na, respectively. Na3MnTi(PO4)3 also exhibits a small volume change after the extraction of two sodium ions, and the NASICON structure is well-maintained after repeated extraction and insertion of sodium ions.

AB - Sodium extraction behavior in the rhombohedral Na3MnTi(PO4)3 with the NASICON structure was investigated and shown to have a 0.5 eV separation of the localized-electron Mn3+/Mn2+ and Mn4+/Mn3+ redox energies. Used as a cathode in a sodium-ion half-cell, the redox couples of Mn3+/Mn2+ and Mn4+/Mn3+ exhibit two voltage plateaus located at about 3.6 and 4.1 V vs Na+/Na, respectively. Na3MnTi(PO4)3 also exhibits a small volume change after the extraction of two sodium ions, and the NASICON structure is well-maintained after repeated extraction and insertion of sodium ions.

UR - https://www.scopus.com/pages/publications/84989170170

U2 - 10.1021/acs.chemmater.6b02096

DO - 10.1021/acs.chemmater.6b02096

M3 - Article

AN - SCOPUS:84989170170

SN - 0897-4756

VL - 28

SP - 6553

EP - 6559

JO - Chemistry of Materials

JF - Chemistry of Materials

IS - 18

ER -

Sodium extraction from NASICON-structured Na₃MnTi(PO₄)₃ through Mn(III)/Mn(II) and Mn(IV)/Mn(III) redox couples

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