Sulfolane Plasticized PVDF-HFP/PEO High-Voltage Gel Polymer Electrolyte DOI
Xin Jiang,

Xue‐Tong Hu,

Yiwei Fan

et al.

Energy & Fuels, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 8, 2025

The poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) is expected to prepare electrolytes with wide electrochemical window owing its excellent antioxidant capability. However, the inert lithium ion conduction of C–C skeleton severely limits application. In this work, high-voltage-resistant sulfolane (SL) used as a plasticizer into PVDF-HFP gel electrolytes. Moreover, alleviate incompatibility SL metal by strong dipole–dipole interaction between poly(ethylene oxide) (PEO) and SL, plasticized PVDF-HFP/PEO polymer electrolyte (PPS-GPE) was achieved, which exhibits high ionic conductivity 1.67 × 10–4 S cm–1 an stability 4.8 V. assembled Li||LiCoO2 cells show average discharge capacity 153 mA h g–1 3.0 4.4 V, retention 77% within 400 cycles at 0.2 C. This work provides new strategy for development high-voltage, energy density, safety batteries.

Language: Английский

Sulfolane Plasticized PVDF-HFP/PEO High-Voltage Gel Polymer Electrolyte DOI
Xin Jiang,

Xue‐Tong Hu,

Yiwei Fan

et al.

Energy & Fuels, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 8, 2025

The poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) is expected to prepare electrolytes with wide electrochemical window owing its excellent antioxidant capability. However, the inert lithium ion conduction of C–C skeleton severely limits application. In this work, high-voltage-resistant sulfolane (SL) used as a plasticizer into PVDF-HFP gel electrolytes. Moreover, alleviate incompatibility SL metal by strong dipole–dipole interaction between poly(ethylene oxide) (PEO) and SL, plasticized PVDF-HFP/PEO polymer electrolyte (PPS-GPE) was achieved, which exhibits high ionic conductivity 1.67 × 10–4 S cm–1 an stability 4.8 V. assembled Li||LiCoO2 cells show average discharge capacity 153 mA h g–1 3.0 4.4 V, retention 77% within 400 cycles at 0.2 C. This work provides new strategy for development high-voltage, energy density, safety batteries.

Language: Английский

Citations

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