Enthalpy‐Driven Molecular Engineering Enables High‐Performance Quasi‐Solid‐State Electrolytes for Long Life Lithium Metal Batteries DOI Creative Commons
Zilong Wang, Longyun Shen,

Yilin Ma

et al.

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

Published: April 7, 2025

Abstract The advancement of lithium metal batteries toward their theoretical energy density potential remains constrained by safety and performance issues inherent to liquid electrolytes. Quasi‐solid‐state electrolytes (QSSEs) based on poly‐1,3‐dioxolane (poly‐DOL) represent a promising development, yet challenges in achieving satisfactory Coulombic efficiency long‐term stability have impeded practical implementation. While nitrate addition can enhance efficiency, its incorporation results prohibitively slow polymerization rates spanning several months. In this work, high‐polymerization‐enthalpy 1,1,1‐trifluoro‐2,3‐epoxypropane is introduced as co‐polymerization promoter, successfully integrating into poly‐DOL‐based QSSEs. resulting electrolyte demonstrates exceptional with 2.23 mS cm −1 ionic conductivity at 25 °C, 99.34% Li|Cu cells, stable interfaces sustained through 1300 h symmetric cell cycling. This approach also suppresses poly‐DOL crystallization, enabling Li|LiFePO 4 cells maintain beyond 2000 cycles 1C. Scale‐up validation ≈1 Ah Li|NCM811 pouch achieves 94.4% capacity retention over 60 cycles. strategy establishes new pathway for developing high‐performance, situ polymerized quasi‐solid‐state storage applications.

Language: Английский

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
Enthalpy‐Driven Molecular Engineering Enables High‐Performance Quasi‐Solid‐State Electrolytes for Long Life Lithium Metal Batteries DOI Creative Commons
Zilong Wang, Longyun Shen,

Yilin Ma

et al.

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

Published: April 7, 2025

Abstract The advancement of lithium metal batteries toward their theoretical energy density potential remains constrained by safety and performance issues inherent to liquid electrolytes. Quasi‐solid‐state electrolytes (QSSEs) based on poly‐1,3‐dioxolane (poly‐DOL) represent a promising development, yet challenges in achieving satisfactory Coulombic efficiency long‐term stability have impeded practical implementation. While nitrate addition can enhance efficiency, its incorporation results prohibitively slow polymerization rates spanning several months. In this work, high‐polymerization‐enthalpy 1,1,1‐trifluoro‐2,3‐epoxypropane is introduced as co‐polymerization promoter, successfully integrating into poly‐DOL‐based QSSEs. resulting electrolyte demonstrates exceptional with 2.23 mS cm −1 ionic conductivity at 25 °C, 99.34% Li|Cu cells, stable interfaces sustained through 1300 h symmetric cell cycling. This approach also suppresses poly‐DOL crystallization, enabling Li|LiFePO 4 cells maintain beyond 2000 cycles 1C. Scale‐up validation ≈1 Ah Li|NCM811 pouch achieves 94.4% capacity retention over 60 cycles. strategy establishes new pathway for developing high‐performance, situ polymerized quasi‐solid‐state storage applications.

Language: Английский

Citations

0