Designing Cellulose Triacetate‐Based Universal Binder for High‐Voltage Sodium‐Ion Battery Cathodes with Enhanced Ionic Conductivity and Binding Strength DOI

Yu‐Zhen Zhang,

Ronghao Wang, Liang Yu

et al.

Advanced Materials, Journal Year: 2025, Volume and Issue: unknown

Published: April 3, 2025

Binders play a pivotal role in the performance of sodium-ion battery (SIB) cathodes, but traditional binders often struggle to balance broad compatibility, high ionic conductivity, superior binding strength, and environmental sustainability. In this study, universal cellulose triacetate (TAC)-based binder (TAC-MMT) composed TAC natural montmorillonite (MMT) is designed facilitate rapid Na+ transport pathways establish robust hydrogen-bonding network. This innovative TAC-MMT features unique chemical structure that achieves conductivity through self-enrichment fast-transport mechanism, while its strength attributed crosslinks between proton acceptors (C═O) donors (-OH) MMT. More importantly, outstanding solubility film-forming properties contribute stable electrode protection compatibility with high-voltage SIB cathodes. Benefiting from these advantages, Na3V2(PO4)2O2F (NVPOF) electrodes demonstrate exceptional performance, including capacity retention 95.2% over 500 cycles at 5C rate response up 15C. The versatility further confirmed NaNi1/3Fe1/3Mn1/3O2 Na0.61[Mn0.27Fe0.34Ti0.39]O2 study highlights potential biomass-based as sustainable effective solution for advancing high-performance batteries.

Language: Английский

Convenient preparation of TiO2-x/MXene composites and their performance as anodes for all-climate lithium-ion batteries DOI

Zengquan Zhu,

Yuxi Shen, Ziyan Pu

et al.

Journal of Power Sources, Journal Year: 2025, Volume and Issue: 630, P. 236112 - 236112

Published: Jan. 5, 2025

Language: Английский

Citations

2
Sole‐Solvent High‐Entropy Electrolyte Realizes Wide‐Temperature and High‐Voltage Practical Anode‐Free Sodium Pouch Cells DOI Open Access
Yanmei Li, Jiawei Wang, Yingyu Wang

et al.

Advanced Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 21, 2025

Abstract Anode‐free sodium batteries (AFSBs) hold great promise for high‐density energy storage. However, high‐voltage AFSBs, especially those can stably cycle at a wide temperature range are challenging due to the poor electrolyte compatibility toward both cathode and anode. Herein, AFSBs with cycling ability in (−20–60 °C) realized first time via sole‐solvent high‐entropy based on diethylene glycol dibutyl ether solvent (D2) NaPF 6 salt. The unique solvent‐ions effect of strong anion interaction weak cation solvation enables entropy‐driven salt disassociation high‐concentration contact ion pairs, thus simultaneously forming stable anion‐derived electrode–electrolyte interphases Moreover, liquid D2 further extends extremes battery. Consequently, ampere‐hour (Ah)‐level anode‐free pouch cells cyclability −20–60 °C realized. Impressively, cell achieves leadingly high cell‐level density 209 Wh kg −1 capacity retention 83.1% after 100 cycles 25 °C. This work provides inspirations designing advanced electrolytes practical AFSBs.

Language: Английский

Citations

1
Formulation principles and synergistic effects of high-voltage electrolytes DOI

Zewei Wei,

Du Yuan,

Xuedi Yuan

et al.

Chemical Society Reviews, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

The energy density of lithium-ion batteries (LIBs) is primarily determined by the working potential devices and specific capacity cathode compounds. Carbonate-based electrolytes have received considerable attention due to their significance for advancing current cell-assembly process. However, commercially available liquid LiPF6 based cannot withstand harsh high-voltage environment effects cathode, issues such as undesired oxidative decomposition ethylene carbonate (EC), catalytic influence dissolved transition metal ions (TMs), poor performance interphases with unstable morphologies components. Furthermore, complex mechanisms (HVEs) are not fully understood. This review presents a comprehensive summary HVEs, including physical properties, solvation structures, interface chemistry. Specifically, chemical compounds failure commercial investigated, followed discussion expected functions HVEs. Then, screening criteria single-component electrolytes, considering oxidation resistance mechanism, mechanism interphase species explored on level positions. Next, cross-scale evolution framework proposed, from structure characteristics, aimed at uncovering formulation principles synergistic Operational systematically scrutinized, starting conventional tuning incorporation multiple components further role entropy-driven effects, all which will favor understanding effects. Finally, integration advanced computational methods mature experimental techniques foster development novel perspectives promising electrolyte candidates.

Language: Английский

Citations

0
Designing Cellulose Triacetate‐Based Universal Binder for High‐Voltage Sodium‐Ion Battery Cathodes with Enhanced Ionic Conductivity and Binding Strength DOI

Yu‐Zhen Zhang,

Ronghao Wang, Liang Yu

et al.

Advanced Materials, Journal Year: 2025, Volume and Issue: unknown

Published: April 3, 2025

Binders play a pivotal role in the performance of sodium-ion battery (SIB) cathodes, but traditional binders often struggle to balance broad compatibility, high ionic conductivity, superior binding strength, and environmental sustainability. In this study, universal cellulose triacetate (TAC)-based binder (TAC-MMT) composed TAC natural montmorillonite (MMT) is designed facilitate rapid Na+ transport pathways establish robust hydrogen-bonding network. This innovative TAC-MMT features unique chemical structure that achieves conductivity through self-enrichment fast-transport mechanism, while its strength attributed crosslinks between proton acceptors (C═O) donors (-OH) MMT. More importantly, outstanding solubility film-forming properties contribute stable electrode protection compatibility with high-voltage SIB cathodes. Benefiting from these advantages, Na3V2(PO4)2O2F (NVPOF) electrodes demonstrate exceptional performance, including capacity retention 95.2% over 500 cycles at 5C rate response up 15C. The versatility further confirmed NaNi1/3Fe1/3Mn1/3O2 Na0.61[Mn0.27Fe0.34Ti0.39]O2 study highlights potential biomass-based as sustainable effective solution for advancing high-performance batteries.

Language: Английский

Citations

0