Nonflammable Polyfluorides‐Anchored Quasi‐Solid Electrolytes by Chemical‐Crosslinking for High‐Safety Sodium Metal Battery DOI
Shun Wang, Xing Lü, Tongyu Zhang

et al.

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

Published: May 8, 2025

Abstract The combustion risks of flammable organic solvents and polymer matrices in liquid electrolyte systems, coupled with critical challenges such as inadequate ionic conductivity at room temperature (RT) poor sodium dendrite suppression capability, significantly hinder the practical application metal batteries (SMBs). Therefore, developing flame‐retardant or non‐combustible systems represents a pathway to overcome their safety limitations. To address these challenges, this study develops fluorinated membrane (PCUF), which integrates salt loading, enhanced ion dissociation, flame retardancy functions, is compatible high‐safety battery systems. presence electron‐withdrawing fluorine atom enhances dissociation lithium/sodium perchlorate promotes efficient transport. PCUF exhibits remarkable ( σ Na ⁺ = 2.590 × 10⁻⁴ S cm⁻¹, Li 2.413 10 ‐ ⁴ cm ¹) transference numbers t 0.910, 0.804). Na|PCUF|Na₃V₂ (PO₄) ₃ robust specific capacity 81.3 mAh g⁻¹ after 2000 cycles 1 C maintains stable performance over wide range (> 400 from 25 85 °C. Meanwhile, assembled demonstrates excellent cycling stability 4000 charge–discharge rate 0.5 C. Furthermore, thermal runaway testing reveals that both higher onset compared PCU membrane. This improvement stems fluorine‐containing free radicals (F·) generated during PCUF's decomposition, effectively suppress migration highly reactive chain reactions into gas phase. work highlights rational design strategy for constructing SEI enhancing safe long‐life sodium‐metal applications.

Language: Английский

Rigid Organic-inorganic Coordination Adaptable Network Integrated Conformational Transformation of BP based Complex for Superior Potassium Storage DOI
Yu Li, Liu Fu-sheng, Jian Wang

et al.

Nano Energy, Journal Year: 2025, Volume and Issue: unknown, P. 110956 - 110956

Published: April 1, 2025

Language: Английский

Citations

1
Copper-doped metal–organic framework-74 solid-state electrolytes for high performance all-solid-state sodium metal batteries DOI
Hao Zhang, Zhiyuan Zhou,

Xinyao Sun

et al.

Journal of Colloid and Interface Science, Journal Year: 2025, Volume and Issue: 689, P. 137241 - 137241

Published: March 4, 2025

Language: Английский

Citations

0
Fast‐Charging Long‐Life Solid‐State Sodium Metal Batteries Enabled by 2D Boron Nitride Nanosheets Based Quasi‐Solid‐State Electrolytes DOI

Jiayu Shen,

Xiaoyu Shi,

Feifei Xing

et al.

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

Published: April 29, 2025

Abstract Solid‐state sodium metal batteries (SSMBs) are considered as one highly competitive, high‐energy‐density yet safe energy storage device, however, the conventional quasi‐solid‐state electrolytes (QSSEs) still suffer from low ion conductivity and limited mechanical properties. Herein, a safe, fast‐charging, long‐life SSMB is reported, utilizing photopolymerized ethoxylated trimethylpropane triacrylate based QSSEs (BN‐QSSE) reinforced by 2D functional fillers of boron nitride nanosheets (BNNSs). The BNNSs with high Young's modulus in BN‐QSSE can simultaneously accelerate homogenize transport for uniform Na deposition form robust electrolyte‐Na interface. Only proportion 1% effectively realize ionic 1 × 10 −2 mS cm −1 , achieve wide electrochemical stability window 4.85 V (vs. Na/Na + ), substantively suppress dendrites. resulting Na||BN‐QSSE||Na symmetric exhibit long life 600 h at 0.1 mA mAh . as‐assembled 3 2 (PO 4 ) ||BN‐QSSE||Na full display capacities 102 g C 75 rate 15 C, maintain 93% initial discharge capacity after 1000 cycles outperforming most reported SSMBs. developed filler‐reinforced QSSE provides new opportunities high‐performance

Language: Английский

Citations

0
Composite electrolyte membrane with continuous Na+ transport for high-performance quasi-solid-state sodium batteries DOI
Wenyong Yuan, M. Ding, Junying Weng

et al.

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 163142 - 163142

Published: May 1, 2025

Language: Английский

Citations

0
Constructing Dissolution–Resistant Interphases for Long‐Life Sodium‐Ion Batteries at Elevated Temperatures DOI Creative Commons
Wen‐Ting Deng, Xiaofan Du, Gaojie Xu

et al.

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

Published: May 8, 2025

Abstract Rechargeable sodium‐ion batteries (SIBs) utilizing NaPF 6 ‐carbonate electrolytes consistently exhibit unsatisfactory cycle life at elevated temperatures, posing a significant challenge for their large‐scale commercialization. This is mainly caused by the instability of interphase layers especially high solubility components (especially NaF) in carbonate solvents. In this study, novel additive sodium difluorobis(oxalato) phosphate (NaDFBOP) synthesized and introduced into to enhance commercial SIBs composed NaNi 1/3 Fe Mn O 2 (NFM) cathode hard carbon (HC) anode, particularly 50 °C. Specifically, NaDFBOP enables NFM/HC retain 85.45% initial capacity after 1000 cycles 30 °C 90.76% 500 Theoretical calculations reveal that DFBOP⁻ anions enter first solvation shell Na + , exhibits strong propensity decomposition. Characterizations suggest favors formation dissolution–resistant robust enriched dissolution‐resistant oxalate‐containing species inorganic NaF, which have mutual binding energy. work underscores critical importance designing functional additives constructing interphases temperature SIBs.

Language: Английский

Citations

0
Innovative MOF Linker engineering in PVDF-HFP gel electrolyte matrix for Solid-State Lithium-Oxygen batteries DOI
Minghui Li,

Yaying Dou,

Zheng Zhou

et al.

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 164013 - 164013

Published: May 1, 2025

Language: Английский

Citations

0
Nonflammable Polyfluorides‐Anchored Quasi‐Solid Electrolytes by Chemical‐Crosslinking for High‐Safety Sodium Metal Battery DOI
Shun Wang, Xing Lü, Tongyu Zhang

et al.

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

Published: May 8, 2025

Abstract The combustion risks of flammable organic solvents and polymer matrices in liquid electrolyte systems, coupled with critical challenges such as inadequate ionic conductivity at room temperature (RT) poor sodium dendrite suppression capability, significantly hinder the practical application metal batteries (SMBs). Therefore, developing flame‐retardant or non‐combustible systems represents a pathway to overcome their safety limitations. To address these challenges, this study develops fluorinated membrane (PCUF), which integrates salt loading, enhanced ion dissociation, flame retardancy functions, is compatible high‐safety battery systems. presence electron‐withdrawing fluorine atom enhances dissociation lithium/sodium perchlorate promotes efficient transport. PCUF exhibits remarkable ( σ Na ⁺ = 2.590 × 10⁻⁴ S cm⁻¹, Li 2.413 10 ‐ ⁴ cm ¹) transference numbers t 0.910, 0.804). Na|PCUF|Na₃V₂ (PO₄) ₃ robust specific capacity 81.3 mAh g⁻¹ after 2000 cycles 1 C maintains stable performance over wide range (> 400 from 25 85 °C. Meanwhile, assembled demonstrates excellent cycling stability 4000 charge–discharge rate 0.5 C. Furthermore, thermal runaway testing reveals that both higher onset compared PCU membrane. This improvement stems fluorine‐containing free radicals (F·) generated during PCUF's decomposition, effectively suppress migration highly reactive chain reactions into gas phase. work highlights rational design strategy for constructing SEI enhancing safe long‐life sodium‐metal applications.

Language: Английский

Citations

0