Lewis Acid–Base Synergistically Enhancing Practical Composite Electrolyte for Fluoride‐ion Batteries at Room Temperature DOI Creative Commons
Hong Cui, Xiao Gao,

Keyu Guo

и другие.

Advanced Science, Год журнала: 2025, Номер unknown

Опубликована: Апрель 27, 2025

Abstract Fluoride‐ion batteries (FIBs) represent a potential “next‐generation” electrochemical storage device, offering high energy density. However, the practical implementation of FIBs at room temperature is impeded by limitations currently available ceramic electrolytes. Here, composite NH 4 HF 2 @PEO@β‐PbSnF electrolyte with both conductivity 10 −4 S cm −1 and wide stability window (4.59 V vs Pb/PbF ) fabricated. Field emission transmission electron microscope (FETEM) demonstrates presence space charge region, which enhances conductivity. Furthermore, 19 F NMR density functional theory (DFT) calculations elucidate that interaction between Sn 2+ (Lewis acid) − base) induces significant modifications to electronic structure, critically contribute enhanced electrolyte. Integrating this promising high‐voltage CuF cathodes anodes, reversible coin cell discharge capacity 143 mAh g up 50 cycles demonstrated. The rational design such electrolytes offers pathway toward application temperature.

Язык: Английский

Lewis Acid–Base Synergistically Enhancing Practical Composite Electrolyte for Fluoride‐ion Batteries at Room Temperature DOI Creative Commons
Hong Cui, Xiao Gao,

Keyu Guo

и другие.

Advanced Science, Год журнала: 2025, Номер unknown

Опубликована: Апрель 27, 2025

Abstract Fluoride‐ion batteries (FIBs) represent a potential “next‐generation” electrochemical storage device, offering high energy density. However, the practical implementation of FIBs at room temperature is impeded by limitations currently available ceramic electrolytes. Here, composite NH 4 HF 2 @PEO@β‐PbSnF electrolyte with both conductivity 10 −4 S cm −1 and wide stability window (4.59 V vs Pb/PbF ) fabricated. Field emission transmission electron microscope (FETEM) demonstrates presence space charge region, which enhances conductivity. Furthermore, 19 F NMR density functional theory (DFT) calculations elucidate that interaction between Sn 2+ (Lewis acid) − base) induces significant modifications to electronic structure, critically contribute enhanced electrolyte. Integrating this promising high‐voltage CuF cathodes anodes, reversible coin cell discharge capacity 143 mAh g up 50 cycles demonstrated. The rational design such electrolytes offers pathway toward application temperature.

Язык: Английский

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