Single-crystalline Mg-substituted Na4Mn3(PO4)2P2O7 nanoparticles as a high capacity and superior cycling cathode for sodium-ion batteries

Xu, Hanxue; Ma, Jiaxin; He, Xuexia; Sun, Jie; Yang, Longhai; Jiang, Ruibin; Lei, Zhibin; Liu, Zong–Huai; Li, Qi

doi:10.1039/d2nr05442f

Cited by 2 publications

(2 citation statements)

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“…[14,15] Na 4 Fe 3 (PO 4 ) 2 P 2 O 7 , with a relatively high theoretical capacity of 129.0 mAh g À 1 and an average potential of ~3.1 V vs Na + /Na, could be synthesized by the conventional solid-state route and showed decent electrochemical performance, rate capability, and charge capacities in both organic and aqueous electrolytes. [16][17][18][19][20] Na 4 Mn 3 (PO 4 ) 2 P 2 O 7 , with its similar theoretical capacity of 129.6 mAh g À 1 and expected potential of ~3.8 V vs Na + /Na showed poor cycling stability, low capacity and rate capability in almost all previous reports, [21][22][23][24][25][26] except for the work of Kim et al where a reversible capacity of ~121 mAh g À 1 was delivered at C/20 rate. [21] In the family of mixed-polyanion compounds, Na 7 V 4 (PO 4 )(P 2 O 7 ) 4 , which has a different space group (P � 42 1 c, No.…”

Section: Introductionmentioning

confidence: 69%

A Comparative Study of Mixed Phosphate‐Pyrophosphate Materials for Aqueous and Non‐Aqueous Na‐ion Batteries

Gečė,

Zarrabeitia,

Pilipavičius

et al. 2023

ChemistrySelect

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Na‐ion batteries based on abundant and sustainable materials might become one of the leading alternative technologies especially suitable for large‐scale stationary storage. Various (mixed)phosphate framework materials are attracting much interest mainly due to their high structural stability and diversity. In this study, we report on the successful synthesis of mixed phosphate‐pyrophosphate Na7V4(PO4)(P2O7)4, Na4Fe3(PO4)2P2O7, and Na4Mn3(PO4)2P2O7. The electrochemical properties of these materials are comprehensively characterized in different organic and aqueous electrolytes. The findings reveal that Na7V4(PO4)(P2O7)4 and Na4Fe3(PO4)2P2O7 exhibit very good cycling performance and rate capability in organic solvent‐based electrolytes. However, their performance deteriorates significantly even in ‘water‐in‐salt’ aqueous electrolytes due to the rapid electrochemical degradation. Na4Mn3(PO4)2P2O7 demonstrates limited electrochemical activity in organic electrolytes and virtually no activity in ‘water‐in‐salt’ electrolytes, likely due to degradation processes resulting in blocking interphasial layers on electrode particles. These results underscore the need for further research to optimize the performance of these materials and identify potential strategies for enhancing their stability and activity in different electrolytes.

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Section: Introductionmentioning

confidence: 69%

A Comparative Study of Mixed Phosphate‐Pyrophosphate Materials for Aqueous and Non‐Aqueous Na‐ion Batteries

Gečė,

Zarrabeitia,

Pilipavičius

et al. 2023

ChemistrySelect

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show abstract

“…[14,15] Na4Fe3(PO4)2P2O7, with a relatively high theoretical capacity of 129.0 mAh g -1 and an average potential of ~3.1 V vs Na + /Na, could be synthesized by the conventional solid-state route and showed decent electrochemical performance, rate capability, and charge capacities in both organic and aqueous electrolytes. [16][17][18][19][20] Na4Mn3(PO4)2P2O7, with its similar theoretical capacity of 129.6 mAh g -1 and expected potential of ~3.8 V vs Na + /Na showed poor cycling stability, low capacity and rate capability in almost all previous reports, [21][22][23][24][25][26] except for the work of Kim et al where a reversible capacity of ~121 mAh g -1 was delivered at C/20 rate. [21] In the family of mixed-polyanion compounds, Na7V4(PO4)(P2O7)4, which has a different space group (𝑃42 1 𝑐, No.…”

Section: Introductionmentioning

confidence: 99%

A Comparative Study of Mixed Phosphate-Pyrophosphate Materials for Aqueous and Non-Aqueous Na-ion Batteries

Gečė,

Zarrabeitia,

Pilipavičius

et al. 2023

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Na-ion batteries based on abundant and sustainable materials might become one of the leading alternative technologies especially suitable for large-scale stationary storage. Various (mixed)phosphate framework materials are attracting much interest mainly due to their high structural stability and diversity. In this study, we report on the successful synthesis of mixed phosphate-pyrophosphate Na7V4(PO4)(P2O7)4, Na4Fe3(PO4)2P2O7, and Na4Mn3(PO4)2P2O7. The electrochemical properties of these materials are comprehensively characterized in different organic and aqueous electrolytes. The findings reveal that Na7V4(PO4)(P2O7)4 and Na4Fe3(PO4)2P2O7 exhibit very good cycling performance and rate capability in organic solvent-based electrolytes. However, their performance deteriorates significantly even in ‘water-in-salt’ aqueous electrolytes due to the rapid electrochemical degradation. Na4Mn3(PO4)2P2O7 demonstrates limited electrochemical activity in organic electrolytes and virtually no activity in ‘water-in-salt’ electrolytes, likely due to degradation processes resulting in blocking interphasial layers on electrode particles. These results underscore the need for further research to optimize the performance of these materials and identify potential strategies for enhancing their stability and activity in different electrolytes.

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Single-crystalline Mg-substituted Na₄Mn₃(PO₄)₂P₂O₇ nanoparticles as a high capacity and superior cycling cathode for sodium-ion batteries

Abstract: Mn-based mixed phosphate Na4Mn3(PO4)2(P2O7) (NMPP) is a promising cathode for high-potential, low cost and eco-friendly sodium-ion batteries. However, this material has still faced some bottleneck issues of the low conductivity,...

Cited by 2 publications

References 50 publications

A Comparative Study of Mixed Phosphate‐Pyrophosphate Materials for Aqueous and Non‐Aqueous Na‐ion Batteries

A Comparative Study of Mixed Phosphate‐Pyrophosphate Materials for Aqueous and Non‐Aqueous Na‐ion Batteries

A Comparative Study of Mixed Phosphate-Pyrophosphate Materials for Aqueous and Non-Aqueous Na-ion Batteries

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