A new high-voltage plateau of Na3V2(PO4)3 for sodium ion batteries: A promising cathode with high energy density

Yanjun Chen; Youlong Xu; Shengnan He; Baofeng Zhang; Li Guo

doi:10.1016/j.ceramint.2021.06.057

A new high-voltage plateau of Na₃V₂(PO₄)₃ for sodium ion batteries: A promising cathode with high energy density

Yanjun Chen
, Youlong Xu
, Shengnan He
, Baofeng Zhang
, Li Guo

Faculty of Electronic and Information Engineering

North University of China
Xi'an Jiaotong University

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

26 Scopus citations

Abstract

A promising K/F co-doped and rGO enwrapped K₀_·₀₄Na₂_·₉₆V₂(PO₄)₂_·₉₈F₀_·₀₆/C@rGO (KF-NVP/C@rGO) cathode material is synthesized through a feasible carbon thermal reduction route. K⁺ substitution is applied to broaden the migration channel and F⁻ doping favors to reduce the grain size to improve the diffusion rate of Na⁺. Moreover, rGO acts as a beneficial conductive network to provide facilitated electronic transportation. A new high-voltage plateau of ~3.8 V has been signed for the deep desodiation/sodiation of KF-NVP/C@rGO, corresponding to the segmental de-intercalation of the third Na⁺ at Na1 site. The initial reversible capacity can be achieved as high as 132.9 mAh g^-1 at 0.1C, which is equivalent to the reversible intercalation of 2.26 Na⁺. Up to now, this modified composite possesses the highest discharge capacity among all the literatures about Na₃V₂(PO₄)₃ material. Moreover, the discharge energy density is 449.7 Wh kg^-1 accordingly. This thus turns KF-NVP/C@rGO into a prospective candidate for advanced sodium storage technology.

Original language	English
Pages (from-to)	26579-26583
Number of pages	5
Journal	Ceramics International
Volume	47
Issue number	18
DOIs	https://doi.org/10.1016/j.ceramint.2021.06.057
State	Published - 15 Sep 2021

Keywords

High energy density
High voltage plateau
Na3V2(PO4)3
Sodium ion batteries

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10.1016/j.ceramint.2021.06.057

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@article{ce02b62f7361488992ed1c4f66c1be32,

title = "A new high-voltage plateau of Na3V2(PO4)3 for sodium ion batteries: A promising cathode with high energy density",

abstract = "A promising K/F co-doped and rGO enwrapped K0·04Na2·96V2(PO4)2·98F0·06/C@rGO (KF-NVP/C@rGO) cathode material is synthesized through a feasible carbon thermal reduction route. K+ substitution is applied to broaden the migration channel and F− doping favors to reduce the grain size to improve the diffusion rate of Na+. Moreover, rGO acts as a beneficial conductive network to provide facilitated electronic transportation. A new high-voltage plateau of \textasciitilde{}3.8 V has been signed for the deep desodiation/sodiation of KF-NVP/C@rGO, corresponding to the segmental de-intercalation of the third Na+ at Na1 site. The initial reversible capacity can be achieved as high as 132.9 mAh g-1 at 0.1C, which is equivalent to the reversible intercalation of 2.26 Na+. Up to now, this modified composite possesses the highest discharge capacity among all the literatures about Na3V2(PO4)3 material. Moreover, the discharge energy density is 449.7 Wh kg-1 accordingly. This thus turns KF-NVP/C@rGO into a prospective candidate for advanced sodium storage technology.",

keywords = "High energy density, High voltage plateau, Na3V2(PO4)3, Sodium ion batteries",

author = "Yanjun Chen and Youlong Xu and Shengnan He and Baofeng Zhang and Li Guo",

note = "Publisher Copyright: {\textcopyright} 2021 Elsevier Ltd and Techna Group S.r.l.",

year = "2021",

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TY - JOUR

T1 - A new high-voltage plateau of Na3V2(PO4)3 for sodium ion batteries

T2 - A promising cathode with high energy density

AU - Chen, Yanjun

AU - Xu, Youlong

AU - He, Shengnan

AU - Zhang, Baofeng

AU - Guo, Li

PY - 2021/9/15

Y1 - 2021/9/15

N2 - A promising K/F co-doped and rGO enwrapped K0·04Na2·96V2(PO4)2·98F0·06/C@rGO (KF-NVP/C@rGO) cathode material is synthesized through a feasible carbon thermal reduction route. K+ substitution is applied to broaden the migration channel and F− doping favors to reduce the grain size to improve the diffusion rate of Na+. Moreover, rGO acts as a beneficial conductive network to provide facilitated electronic transportation. A new high-voltage plateau of ~3.8 V has been signed for the deep desodiation/sodiation of KF-NVP/C@rGO, corresponding to the segmental de-intercalation of the third Na+ at Na1 site. The initial reversible capacity can be achieved as high as 132.9 mAh g-1 at 0.1C, which is equivalent to the reversible intercalation of 2.26 Na+. Up to now, this modified composite possesses the highest discharge capacity among all the literatures about Na3V2(PO4)3 material. Moreover, the discharge energy density is 449.7 Wh kg-1 accordingly. This thus turns KF-NVP/C@rGO into a prospective candidate for advanced sodium storage technology.

AB - A promising K/F co-doped and rGO enwrapped K0·04Na2·96V2(PO4)2·98F0·06/C@rGO (KF-NVP/C@rGO) cathode material is synthesized through a feasible carbon thermal reduction route. K+ substitution is applied to broaden the migration channel and F− doping favors to reduce the grain size to improve the diffusion rate of Na+. Moreover, rGO acts as a beneficial conductive network to provide facilitated electronic transportation. A new high-voltage plateau of ~3.8 V has been signed for the deep desodiation/sodiation of KF-NVP/C@rGO, corresponding to the segmental de-intercalation of the third Na+ at Na1 site. The initial reversible capacity can be achieved as high as 132.9 mAh g-1 at 0.1C, which is equivalent to the reversible intercalation of 2.26 Na+. Up to now, this modified composite possesses the highest discharge capacity among all the literatures about Na3V2(PO4)3 material. Moreover, the discharge energy density is 449.7 Wh kg-1 accordingly. This thus turns KF-NVP/C@rGO into a prospective candidate for advanced sodium storage technology.

KW - High energy density

KW - High voltage plateau

KW - Na3V2(PO4)3

KW - Sodium ion batteries

UR - https://www.scopus.com/pages/publications/85108015225

U2 - 10.1016/j.ceramint.2021.06.057

DO - 10.1016/j.ceramint.2021.06.057

M3 - 文章

AN - SCOPUS:85108015225

SN - 0272-8842

VL - 47

SP - 26579

EP - 26583

JO - Ceramics International

JF - Ceramics International

IS - 18

ER -

A new high-voltage plateau of Na₃V₂(PO₄)₃ for sodium ion batteries: A promising cathode with high energy density

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