High-rate NaMo0.05Ti1.95(PO4)3 for aqueous sodium-ion battery anode material

Cheng Yen Wu; Shao Chu Huang; Jagabandhu Patra; Chia Ching Lin; Chung Sheng Ni; Jeng Kuei Chang; Han Yi Chen; Cheng Zhang Lu

doi:10.1557/s43581-022-00041-z

High-rate NaMo_0.05Ti_1.95(PO₄)₃ for aqueous sodium-ion battery anode material

Cheng Yen Wu, Shao Chu Huang, Jagabandhu Patra, Chia Ching Lin, Chung Sheng Ni, Jeng Kuei Chang^*, Han Yi Chen^*, Cheng Zhang Lu^*

^*Corresponding author for this work

Department of Materials Science and Engineering

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

Abstract

Aqueous sodium-ion batteries (ASIBs) are currently being developed as low-cost candidates for large-scale energy storage of green energy. Na superionic conductor-type NaTi₂(PO₄)₃ is a promising anode material for ASIBs owing to its excellent theoretical capacity, open three-dimensional framework, and sufficiently low-redox potential. However, its retention rate is restricted by its poor electronic conductivity. In this study, Mo-doped NTPs, NaMo_xTi_2−x(PO₄)₃ (x = 0, 0.01, 0.03, 0.05, 0.07), are synthesized using a facile sol–gel method to enhance its electronic conductivity. X-ray diffraction analysis reveals that composites doped with high-valence Mo retain rhombohedral crystal structure. Owing to the improved electronic conductivity and sodium-ion kinetics, NaMo_0.05Ti_1.95(PO₄)₃ exhibits superior capacity of 100.9 mAh g⁻¹ at 50 mA g⁻¹ and excellent rate performance of 71.9 mAh g⁻¹ at 10 A g⁻¹. Moreover, Mo-doped composites retain 82.7% of their original capacity after 500 cycles at 1 A g⁻¹, indicating the excellent cycling stability of NaMo_0.05Ti_1.95(PO₄)₃. Full cell with Mg-doped Na₃V_1.95Mg_0.05(PO₄)₂F₃/C cathode exhibits a high voltage window of 1.5 V and a sustained high energy density of 28.7 Wh kg⁻¹ at 512.7 W kg⁻¹ and 22.1 Wh kg⁻¹ at 2405.1 W kg⁻¹. These results demonstrate that NaMo_0.05Ti_1.95(PO₄)₃ exhibits high rate capability and long cycle life, making it a promising ASIB anode material for grid-scale energy storage.

Original language	English
Pages (from-to)	350-359
Number of pages	10
Journal	MRS Energy and Sustainability
Volume	9
Issue number	2
DOIs	https://doi.org/10.1557/s43581-022-00041-z
State	Published - Sep 2022

Keywords

dopant
dustainability
energy storage
extended X-ray absorption fine structure (EXAFS)
operando
x-ray diffraction (XRD)

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1557/s43581-022-00041-z

Cite this

@article{27bea24dd3f44b4a9f2c291926015ca2,

title = "High-rate NaMo0.05Ti1.95(PO4)3 for aqueous sodium-ion battery anode material",

abstract = "Aqueous sodium-ion batteries (ASIBs) are currently being developed as low-cost candidates for large-scale energy storage of green energy. Na superionic conductor-type NaTi2(PO4)3 is a promising anode material for ASIBs owing to its excellent theoretical capacity, open three-dimensional framework, and sufficiently low-redox potential. However, its retention rate is restricted by its poor electronic conductivity. In this study, Mo-doped NTPs, NaMoxTi2−x(PO4)3 (x = 0, 0.01, 0.03, 0.05, 0.07), are synthesized using a facile sol–gel method to enhance its electronic conductivity. X-ray diffraction analysis reveals that composites doped with high-valence Mo retain rhombohedral crystal structure. Owing to the improved electronic conductivity and sodium-ion kinetics, NaMo0.05Ti1.95(PO4)3 exhibits superior capacity of 100.9 mAh g−1 at 50 mA g−1 and excellent rate performance of 71.9 mAh g−1 at 10 A g−1. Moreover, Mo-doped composites retain 82.7% of their original capacity after 500 cycles at 1 A g−1, indicating the excellent cycling stability of NaMo0.05Ti1.95(PO4)3. Full cell with Mg-doped Na3V1.95Mg0.05(PO4)2F3/C cathode exhibits a high voltage window of 1.5 V and a sustained high energy density of 28.7 Wh kg−1 at 512.7 W kg−1 and 22.1 Wh kg−1 at 2405.1 W kg−1. These results demonstrate that NaMo0.05Ti1.95(PO4)3 exhibits high rate capability and long cycle life, making it a promising ASIB anode material for grid-scale energy storage.",

keywords = "dopant, dustainability, energy storage, extended X-ray absorption fine structure (EXAFS), operando, x-ray diffraction (XRD)",

author = "Wu, {Cheng Yen} and Huang, {Shao Chu} and Jagabandhu Patra and Lin, {Chia Ching} and Ni, {Chung Sheng} and Chang, {Jeng Kuei} and Chen, {Han Yi} and Lu, {Cheng Zhang}",

note = "Publisher Copyright: {\textcopyright} 2022, The Author(s), under exclusive licence to The Materials Research Society.",

year = "2022",

month = sep,

doi = "10.1557/s43581-022-00041-z",

language = "English",

volume = "9",

pages = "350--359",

journal = "MRS Energy and Sustainability",

issn = "2329-2229",

publisher = "Cambridge University Press",

number = "2",

}

TY - JOUR

T1 - High-rate NaMo0.05Ti1.95(PO4)3 for aqueous sodium-ion battery anode material

AU - Wu, Cheng Yen

AU - Huang, Shao Chu

AU - Patra, Jagabandhu

AU - Lin, Chia Ching

AU - Ni, Chung Sheng

AU - Chang, Jeng Kuei

AU - Chen, Han Yi

AU - Lu, Cheng Zhang

PY - 2022/9

Y1 - 2022/9

N2 - Aqueous sodium-ion batteries (ASIBs) are currently being developed as low-cost candidates for large-scale energy storage of green energy. Na superionic conductor-type NaTi2(PO4)3 is a promising anode material for ASIBs owing to its excellent theoretical capacity, open three-dimensional framework, and sufficiently low-redox potential. However, its retention rate is restricted by its poor electronic conductivity. In this study, Mo-doped NTPs, NaMoxTi2−x(PO4)3 (x = 0, 0.01, 0.03, 0.05, 0.07), are synthesized using a facile sol–gel method to enhance its electronic conductivity. X-ray diffraction analysis reveals that composites doped with high-valence Mo retain rhombohedral crystal structure. Owing to the improved electronic conductivity and sodium-ion kinetics, NaMo0.05Ti1.95(PO4)3 exhibits superior capacity of 100.9 mAh g−1 at 50 mA g−1 and excellent rate performance of 71.9 mAh g−1 at 10 A g−1. Moreover, Mo-doped composites retain 82.7% of their original capacity after 500 cycles at 1 A g−1, indicating the excellent cycling stability of NaMo0.05Ti1.95(PO4)3. Full cell with Mg-doped Na3V1.95Mg0.05(PO4)2F3/C cathode exhibits a high voltage window of 1.5 V and a sustained high energy density of 28.7 Wh kg−1 at 512.7 W kg−1 and 22.1 Wh kg−1 at 2405.1 W kg−1. These results demonstrate that NaMo0.05Ti1.95(PO4)3 exhibits high rate capability and long cycle life, making it a promising ASIB anode material for grid-scale energy storage.

AB - Aqueous sodium-ion batteries (ASIBs) are currently being developed as low-cost candidates for large-scale energy storage of green energy. Na superionic conductor-type NaTi2(PO4)3 is a promising anode material for ASIBs owing to its excellent theoretical capacity, open three-dimensional framework, and sufficiently low-redox potential. However, its retention rate is restricted by its poor electronic conductivity. In this study, Mo-doped NTPs, NaMoxTi2−x(PO4)3 (x = 0, 0.01, 0.03, 0.05, 0.07), are synthesized using a facile sol–gel method to enhance its electronic conductivity. X-ray diffraction analysis reveals that composites doped with high-valence Mo retain rhombohedral crystal structure. Owing to the improved electronic conductivity and sodium-ion kinetics, NaMo0.05Ti1.95(PO4)3 exhibits superior capacity of 100.9 mAh g−1 at 50 mA g−1 and excellent rate performance of 71.9 mAh g−1 at 10 A g−1. Moreover, Mo-doped composites retain 82.7% of their original capacity after 500 cycles at 1 A g−1, indicating the excellent cycling stability of NaMo0.05Ti1.95(PO4)3. Full cell with Mg-doped Na3V1.95Mg0.05(PO4)2F3/C cathode exhibits a high voltage window of 1.5 V and a sustained high energy density of 28.7 Wh kg−1 at 512.7 W kg−1 and 22.1 Wh kg−1 at 2405.1 W kg−1. These results demonstrate that NaMo0.05Ti1.95(PO4)3 exhibits high rate capability and long cycle life, making it a promising ASIB anode material for grid-scale energy storage.

KW - dopant

KW - dustainability

KW - energy storage

KW - extended X-ray absorption fine structure (EXAFS)

KW - operando

KW - x-ray diffraction (XRD)

UR - http://www.scopus.com/inward/record.url?scp=85141868928&partnerID=8YFLogxK

U2 - 10.1557/s43581-022-00041-z

DO - 10.1557/s43581-022-00041-z

M3 - Article

AN - SCOPUS:85141868928

SN - 2329-2229

VL - 9

SP - 350

EP - 359

JO - MRS Energy and Sustainability

JF - MRS Energy and Sustainability

IS - 2

ER -