A multiphase sodium vanadium phosphate cathode material for high-rate sodium-ion batteries

Chuan Wang; Hai Long; Lijiao Zhou; Chao Shen; Wei Tang; Xiaodong Wang; Bingbing Tian; Le Shao; Zhanyuan Tian; Haijun Su; Keyu Xie

doi:10.1016/j.jmst.2020.05.076

A multiphase sodium vanadium phosphate cathode material for high-rate sodium-ion batteries

Chuan Wang, Hai Long, Lijiao Zhou, Chao Shen, Wei Tang, Xiaodong Wang, Bingbing Tian, Le Shao, Zhanyuan Tian, Haijun Su, Keyu Xie

School of Materials Sience and Engineering

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

21 Scopus citations

Abstract

The unsatisfactory rate capability and poor cycling stability at high rate of sodium-ion batteries (SIBs) have impeded their practical applications. Herein, a Na₃V₂(PO₄)₃/Na₃V₃(PO₄)₄ multiphase cathode materials for high-rate and long cycling SIBs was successfully synthesized by regulation the stoichiometric ratio of raw materials. The combined experiment and simulation results show that the multiphase materials consisted of NASICON structural phase Na₃V₂(PO₄)₃ and layered structure phase Na₃V₃(PO₄)₄, possess abundant phase boundaries. Electrochemical experiments demonstrate that the multiphase materials maintain a remarkable reversible capacity of 69.0 mA h g⁻¹ even at an ultrahigh current density of 100 C with a high capacity retention of 81.25 % even after 10,000 cycles. Na₃V₂(PO₄)₃/Na₃V₃(PO₄)₄ electrode exhibits a higher working voltage, superior rate capability and better cycling stability than Na₃V₂(PO₄)₃ electrode, which indicates that the introduction of second phase can be an effective strategy for the development of novel cathode materials for SIBs.

Original language	English
Pages (from-to)	121-127
Number of pages	7
Journal	Journal of Materials Science and Technology
Volume	66
DOIs	https://doi.org/10.1016/j.jmst.2020.05.076
State	Published - 10 Mar 2021

Keywords

High-rate capability
Multiphase
NaV(PO)
NaV(PO)
Sodium-ion batteries

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10.1016/j.jmst.2020.05.076

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title = "A multiphase sodium vanadium phosphate cathode material for high-rate sodium-ion batteries",

abstract = "The unsatisfactory rate capability and poor cycling stability at high rate of sodium-ion batteries (SIBs) have impeded their practical applications. Herein, a Na3V2(PO4)3/Na3V3(PO4)4 multiphase cathode materials for high-rate and long cycling SIBs was successfully synthesized by regulation the stoichiometric ratio of raw materials. The combined experiment and simulation results show that the multiphase materials consisted of NASICON structural phase Na3V2(PO4)3 and layered structure phase Na3V3(PO4)4, possess abundant phase boundaries. Electrochemical experiments demonstrate that the multiphase materials maintain a remarkable reversible capacity of 69.0 mA h g−1 even at an ultrahigh current density of 100 C with a high capacity retention of 81.25 % even after 10,000 cycles. Na3V2(PO4)3/Na3V3(PO4)4 electrode exhibits a higher working voltage, superior rate capability and better cycling stability than Na3V2(PO4)3 electrode, which indicates that the introduction of second phase can be an effective strategy for the development of novel cathode materials for SIBs.",

keywords = "High-rate capability, Multiphase, NaV(PO), NaV(PO), Sodium-ion batteries",

author = "Chuan Wang and Hai Long and Lijiao Zhou and Chao Shen and Wei Tang and Xiaodong Wang and Bingbing Tian and Le Shao and Zhanyuan Tian and Haijun Su and Keyu Xie",

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year = "2021",

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doi = "10.1016/j.jmst.2020.05.076",

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T1 - A multiphase sodium vanadium phosphate cathode material for high-rate sodium-ion batteries

AU - Wang, Chuan

AU - Long, Hai

AU - Zhou, Lijiao

AU - Shen, Chao

AU - Tang, Wei

AU - Wang, Xiaodong

AU - Tian, Bingbing

AU - Shao, Le

AU - Tian, Zhanyuan

AU - Su, Haijun

AU - Xie, Keyu

PY - 2021/3/10

Y1 - 2021/3/10

N2 - The unsatisfactory rate capability and poor cycling stability at high rate of sodium-ion batteries (SIBs) have impeded their practical applications. Herein, a Na3V2(PO4)3/Na3V3(PO4)4 multiphase cathode materials for high-rate and long cycling SIBs was successfully synthesized by regulation the stoichiometric ratio of raw materials. The combined experiment and simulation results show that the multiphase materials consisted of NASICON structural phase Na3V2(PO4)3 and layered structure phase Na3V3(PO4)4, possess abundant phase boundaries. Electrochemical experiments demonstrate that the multiphase materials maintain a remarkable reversible capacity of 69.0 mA h g−1 even at an ultrahigh current density of 100 C with a high capacity retention of 81.25 % even after 10,000 cycles. Na3V2(PO4)3/Na3V3(PO4)4 electrode exhibits a higher working voltage, superior rate capability and better cycling stability than Na3V2(PO4)3 electrode, which indicates that the introduction of second phase can be an effective strategy for the development of novel cathode materials for SIBs.

AB - The unsatisfactory rate capability and poor cycling stability at high rate of sodium-ion batteries (SIBs) have impeded their practical applications. Herein, a Na3V2(PO4)3/Na3V3(PO4)4 multiphase cathode materials for high-rate and long cycling SIBs was successfully synthesized by regulation the stoichiometric ratio of raw materials. The combined experiment and simulation results show that the multiphase materials consisted of NASICON structural phase Na3V2(PO4)3 and layered structure phase Na3V3(PO4)4, possess abundant phase boundaries. Electrochemical experiments demonstrate that the multiphase materials maintain a remarkable reversible capacity of 69.0 mA h g−1 even at an ultrahigh current density of 100 C with a high capacity retention of 81.25 % even after 10,000 cycles. Na3V2(PO4)3/Na3V3(PO4)4 electrode exhibits a higher working voltage, superior rate capability and better cycling stability than Na3V2(PO4)3 electrode, which indicates that the introduction of second phase can be an effective strategy for the development of novel cathode materials for SIBs.

KW - High-rate capability

KW - Multiphase

KW - NaV(PO)

KW - Sodium-ion batteries

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M3 - 文章

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ER -

A multiphase sodium vanadium phosphate cathode material for high-rate sodium-ion batteries

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Keywords

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