Doping Engineering of Sodium Vanadium Fluorophosphates Cathodes for Sodium-Ion Batteries

Rakyung Kim; Minjun Hwang; Ho Seok Park

doi:10.1007/s11814-025-00388-2

Doping Engineering of Sodium Vanadium Fluorophosphates Cathodes for Sodium-Ion Batteries

Rakyung Kim
, Minjun Hwang
, Ho Seok Park

Department of Chemical Engineering

Sungkyunkwan University

Research output: Contribution to journal › Review article › peer-review

3 Scopus citations

Abstract

Sodium-ion batteries offer a promising alternative to lithium-ion batteries due to the abundance and low cost of sodium resources. Na₃V₂(PO₄)₂F_3−yO_y (NVPFO_y) stands out as a cathode material with high average operating potential (~ 3.9 V vs Na⁺/Na), fast Na⁺ transport, and strong structural stability (minimal volumetric strain of ~ 2%). This review addresses the structural characteristics and charge storage mechanisms of NVPFO_y, focusing on charge compensation and Na⁺/vacancy ordering. It also discusses recent advances in lattice regulation and doping strategies to enhance electrochemical properties. Finally, we highlight challenges and future directions for practical applications, emphasizing the correlation between crystal structure and performance.

Original language	English
Pages (from-to)	57-77
Number of pages	21
Journal	Korean Journal of Chemical Engineering
Volume	43
Issue number	1
DOIs	https://doi.org/10.1007/s11814-025-00388-2
State	Published - Jan 2026

Keywords

Cathodes
Doping engineering
Energy storage
Sodium vanadium fluorophosphates
Sodium-ion batteries

UN SDGs

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

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10.1007/s11814-025-00388-2

Cite this

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title = "Doping Engineering of Sodium Vanadium Fluorophosphates Cathodes for Sodium-Ion Batteries",

abstract = "Sodium-ion batteries offer a promising alternative to lithium-ion batteries due to the abundance and low cost of sodium resources. Na3V2(PO4)2F3−yOy (NVPFOy) stands out as a cathode material with high average operating potential (\textasciitilde{} 3.9 V vs Na+/Na), fast Na⁺ transport, and strong structural stability (minimal volumetric strain of \textasciitilde{} 2\%). This review addresses the structural characteristics and charge storage mechanisms of NVPFOy, focusing on charge compensation and Na⁺/vacancy ordering. It also discusses recent advances in lattice regulation and doping strategies to enhance electrochemical properties. Finally, we highlight challenges and future directions for practical applications, emphasizing the correlation between crystal structure and performance.",

keywords = "Cathodes, Doping engineering, Energy storage, Sodium vanadium fluorophosphates, Sodium-ion batteries",

author = "Rakyung Kim and Minjun Hwang and Park, \{Ho Seok\}",

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year = "2026",

month = jan,

doi = "10.1007/s11814-025-00388-2",

language = "English",

volume = "43",

pages = "57--77",

journal = "Korean Journal of Chemical Engineering",

issn = "0256-1115",

publisher = "Springer",

number = "1",

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T1 - Doping Engineering of Sodium Vanadium Fluorophosphates Cathodes for Sodium-Ion Batteries

AU - Kim, Rakyung

AU - Hwang, Minjun

AU - Park, Ho Seok

N1 - Publisher Copyright: © The Author(s) 2025.

PY - 2026/1

Y1 - 2026/1

N2 - Sodium-ion batteries offer a promising alternative to lithium-ion batteries due to the abundance and low cost of sodium resources. Na3V2(PO4)2F3−yOy (NVPFOy) stands out as a cathode material with high average operating potential (~ 3.9 V vs Na+/Na), fast Na⁺ transport, and strong structural stability (minimal volumetric strain of ~ 2%). This review addresses the structural characteristics and charge storage mechanisms of NVPFOy, focusing on charge compensation and Na⁺/vacancy ordering. It also discusses recent advances in lattice regulation and doping strategies to enhance electrochemical properties. Finally, we highlight challenges and future directions for practical applications, emphasizing the correlation between crystal structure and performance.

AB - Sodium-ion batteries offer a promising alternative to lithium-ion batteries due to the abundance and low cost of sodium resources. Na3V2(PO4)2F3−yOy (NVPFOy) stands out as a cathode material with high average operating potential (~ 3.9 V vs Na+/Na), fast Na⁺ transport, and strong structural stability (minimal volumetric strain of ~ 2%). This review addresses the structural characteristics and charge storage mechanisms of NVPFOy, focusing on charge compensation and Na⁺/vacancy ordering. It also discusses recent advances in lattice regulation and doping strategies to enhance electrochemical properties. Finally, we highlight challenges and future directions for practical applications, emphasizing the correlation between crystal structure and performance.

KW - Cathodes

KW - Doping engineering

KW - Energy storage

KW - Sodium vanadium fluorophosphates

KW - Sodium-ion batteries

UR - https://www.scopus.com/pages/publications/85217223461

U2 - 10.1007/s11814-025-00388-2

DO - 10.1007/s11814-025-00388-2

M3 - Review article

AN - SCOPUS:85217223461

SN - 0256-1115

VL - 43

SP - 57

EP - 77

JO - Korean Journal of Chemical Engineering

JF - Korean Journal of Chemical Engineering

IS - 1

ER -

Doping Engineering of Sodium Vanadium Fluorophosphates Cathodes for Sodium-Ion Batteries

Abstract

Keywords

UN SDGs

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