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A high-voltage symmetric sodium ion battery using sodium vanadium pyrophosphate with superior power density and long lifespan

Li, Jinke ; Wang, Rui ; Zhao, Wenguang ; Hou, Xu LU orcid ; Paillard, Elie ; Ning, De ; Li, Cheng ; Wang, Jun ; Xiao, Yinguo and Winter, Martin , et al. (2021) In Journal of Power Sources 507.
Abstract

Sodium ion batteries have been considered as promising alternatives to lithium ion batteries for large-scale renewable energy and smart grids applications due to their low cost and rich resources. However, critical drawbacks such as low energy density and poor stability are hindering their development and application. In this work, a stable symmetric sodium ion cell using sodium vanadium pyrophosphate Na6·88V2·81(P2O7)4 as the positive and negative electrodes is fabricated. Since the bipolar Na6·88V2·81(P2O7)4 possesses high sodium-ion diffusion ability and stable structure framework, it demonstrates promising rate capability... (More)

Sodium ion batteries have been considered as promising alternatives to lithium ion batteries for large-scale renewable energy and smart grids applications due to their low cost and rich resources. However, critical drawbacks such as low energy density and poor stability are hindering their development and application. In this work, a stable symmetric sodium ion cell using sodium vanadium pyrophosphate Na6·88V2·81(P2O7)4 as the positive and negative electrodes is fabricated. Since the bipolar Na6·88V2·81(P2O7)4 possesses high sodium-ion diffusion ability and stable structure framework, it demonstrates promising rate capability and cycling performance as both the positive and negative electrodes. The symmetric sodium ion cell, with Na6·88V2·81(P2O7)4 as the active material in both the positive and negative electrodes, exhibits a high operating voltage plateau of ≈3.0 V, distinct rate capability (e.g. 45 mAh g−1 at 10 C) and excellent cycling performance (e.g. 71.1% capacity retention after 1000 cycles at 2 C). The results of this work represent a step toward the development of symmetric sodium ion batteries with high operating voltage, good rate capability and long lifespan.

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publishing date
type
Contribution to journal
publication status
published
keywords
Negative electrode, Positive electrode, Sodium ion batteries, Sodium vanadium pyrophosphate, Symmetric cell
in
Journal of Power Sources
volume
507
article number
230183
publisher
Elsevier
external identifiers
  • scopus:85110593696
ISSN
0378-7753
DOI
10.1016/j.jpowsour.2021.230183
language
English
LU publication?
no
additional info
Publisher Copyright: © 2021 Elsevier B.V.
id
25327cc5-55d9-403c-bc9e-448a5250dddb
date added to LUP
2025-12-05 22:35:44
date last changed
2025-12-11 14:53:00
@article{25327cc5-55d9-403c-bc9e-448a5250dddb,
  abstract     = {{<p>Sodium ion batteries have been considered as promising alternatives to lithium ion batteries for large-scale renewable energy and smart grids applications due to their low cost and rich resources. However, critical drawbacks such as low energy density and poor stability are hindering their development and application. In this work, a stable symmetric sodium ion cell using sodium vanadium pyrophosphate Na<sub>6·88</sub>V<sub>2·81</sub>(P<sub>2</sub>O<sub>7</sub>)<sub>4</sub> as the positive and negative electrodes is fabricated. Since the bipolar Na<sub>6·88</sub>V<sub>2·81</sub>(P<sub>2</sub>O<sub>7</sub>)<sub>4</sub> possesses high sodium-ion diffusion ability and stable structure framework, it demonstrates promising rate capability and cycling performance as both the positive and negative electrodes. The symmetric sodium ion cell, with Na<sub>6·88</sub>V<sub>2·81</sub>(P<sub>2</sub>O<sub>7</sub>)<sub>4</sub> as the active material in both the positive and negative electrodes, exhibits a high operating voltage plateau of ≈3.0 V, distinct rate capability (e.g. 45 mAh g<sup>−1</sup> at 10 C) and excellent cycling performance (e.g. 71.1% capacity retention after 1000 cycles at 2 C). The results of this work represent a step toward the development of symmetric sodium ion batteries with high operating voltage, good rate capability and long lifespan.</p>}},
  author       = {{Li, Jinke and Wang, Rui and Zhao, Wenguang and Hou, Xu and Paillard, Elie and Ning, De and Li, Cheng and Wang, Jun and Xiao, Yinguo and Winter, Martin and Li, Jie}},
  issn         = {{0378-7753}},
  keywords     = {{Negative electrode; Positive electrode; Sodium ion batteries; Sodium vanadium pyrophosphate; Symmetric cell}},
  language     = {{eng}},
  month        = {{09}},
  publisher    = {{Elsevier}},
  series       = {{Journal of Power Sources}},
  title        = {{A high-voltage symmetric sodium ion battery using sodium vanadium pyrophosphate with superior power density and long lifespan}},
  url          = {{http://dx.doi.org/10.1016/j.jpowsour.2021.230183}},
  doi          = {{10.1016/j.jpowsour.2021.230183}},
  volume       = {{507}},
  year         = {{2021}},
}