The Structural Effect of a Composite Solid Electrolyte on Electrochemical Performance and Fire Safety DOI Open Access

Hwiyun Im,

Dae Ung Park,

Yong Jae Lee

и другие.

Materials, Год журнала: 2025, Номер 18(7), С. 1536 - 1536

Опубликована: Март 28, 2025

In this study, we investigated the structural effect of composite solid electrolytes Al-doped LLZO and PVDF-HFP (0D_Al-LLZO@PVDF-HFP 1D_Al-LLZO@PVDF-HFP) on electrochemical (EC) performance fire safety through a systematic evaluation comparative tests. The unique structure advantageous features (1D_Al-LLZO@PVDF-HFP) were highlighted by comparing controls (PVDF-HFP 0D_Al-LLZO@PVDF-HFP) with physicochemical analyses tests morphology LLZO/PVDF-HFP composites analyzed X-ray diffraction (XRD) scanning electron microscopy (SEM), while their chemical functionalities free ion clusters examined Fourier transform infrared (FT-IR) spectroscopy Raman spectroscopy, respectively. 1D_Al-LLZO@PVDF-HFP 1D structured Al-LLZO filler network in matrix could effectively regulate crystallinity facilitated lithium salt dissociation, resulting high lithium-ion transference number ionic conductivity. As result, electrolyte an optimized low content (~5.1 wt%) exhibited enhanced conductivity (σ: 1.40 × 10−4 S/cm) interfacial resistance, broadened EC stability (voltage window: 4.75 V vs. Li/Li+), (0.75) superior to that 0D_Al-LLZO@PVDF-HFP. characterizations, 1D_Al-LLZO@PVDF-HFP-based cell demonstrated symmetric (>2000 h) full (LiFePO4|electrolyte|Li) reversible capacity 102.7 mAh/g at 2C retention 85.7% over 200 cycles, better than 0D_ Al-LLZO@PVDF-HFP-based cell. flammability tests, Al-LLZO@PVDF-HFP (nonflammability) compared PVDF-HFP-based regardless structure, suggesting importance inorganic rather composite.

Язык: Английский

The Structural Effect of a Composite Solid Electrolyte on Electrochemical Performance and Fire Safety DOI Open Access

Hwiyun Im,

Dae Ung Park,

Yong Jae Lee

и другие.

Materials, Год журнала: 2025, Номер 18(7), С. 1536 - 1536

Опубликована: Март 28, 2025

In this study, we investigated the structural effect of composite solid electrolytes Al-doped LLZO and PVDF-HFP (0D_Al-LLZO@PVDF-HFP 1D_Al-LLZO@PVDF-HFP) on electrochemical (EC) performance fire safety through a systematic evaluation comparative tests. The unique structure advantageous features (1D_Al-LLZO@PVDF-HFP) were highlighted by comparing controls (PVDF-HFP 0D_Al-LLZO@PVDF-HFP) with physicochemical analyses tests morphology LLZO/PVDF-HFP composites analyzed X-ray diffraction (XRD) scanning electron microscopy (SEM), while their chemical functionalities free ion clusters examined Fourier transform infrared (FT-IR) spectroscopy Raman spectroscopy, respectively. 1D_Al-LLZO@PVDF-HFP 1D structured Al-LLZO filler network in matrix could effectively regulate crystallinity facilitated lithium salt dissociation, resulting high lithium-ion transference number ionic conductivity. As result, electrolyte an optimized low content (~5.1 wt%) exhibited enhanced conductivity (σ: 1.40 × 10−4 S/cm) interfacial resistance, broadened EC stability (voltage window: 4.75 V vs. Li/Li+), (0.75) superior to that 0D_Al-LLZO@PVDF-HFP. characterizations, 1D_Al-LLZO@PVDF-HFP-based cell demonstrated symmetric (>2000 h) full (LiFePO4|electrolyte|Li) reversible capacity 102.7 mAh/g at 2C retention 85.7% over 200 cycles, better than 0D_ Al-LLZO@PVDF-HFP-based cell. flammability tests, Al-LLZO@PVDF-HFP (nonflammability) compared PVDF-HFP-based regardless structure, suggesting importance inorganic rather composite.

Язык: Английский

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