Sandwich structured PVDF-HFP-based composite solid electrolytes for solid-state lithium metal batteries

Xu, Kang; Xu, Chao; Jiang, Yujie; Cai, Jinhai; Ni, Jiaxi; Lai, Chiu‐Chun

doi:10.1007/s11581-022-04599-z

Cited by 9 publications

(7 citation statements)

References 38 publications

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“…The mechanical stability of a battery is mainly dependent on the electrolyte membrane. When the internal stress of the battery exceeds the strength of the electrolyte membrane, different mechanical failures will occur, which will seriously affect the electrochemical performance of the battery [34]. As shown in Figure 5a, the tensile strength The mechanical stability of a battery is mainly dependent on the electrolyte membrane.…”

Section: Resultsmentioning

confidence: 99%

Preparation and Properties of Gel Polymer Electrolytes with Li1.5Al0.5Ge1.5(PO4)3 and Li6.46La3Zr1.46Ta0.54O12 by UV Curing Process

Liang,

Hun,

Lan

et al. 2024

Polymers

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Poly (vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP)-based gel polymer electrolytes (GPEs) are considered a promising electrolyte candidate for polymer lithium-ion batteries (LIBs) because of their free-standing shape, versatility, security, flexibility, lightweight, reliability, and so on. However, due to problems such as low ionic conductivity, PVDF-HFP can only be used on a small scale when used as a substrate alone. To overcome the above shortcomings, GPEs were designed and synthesized by a UV curing process by adding NASICON-type Li1.5Al0.5Ge1.5(PO4)3 (LAGP) and garnet-type Li6.46La3Zr1.46Ta0.54O12 (LLZTO) to PVDF-HFP. Experimentally, GPEs with 10% weight LLZTO in a PVDF-HFP matrix had an ionic conductivity of up to 3 × 10−4 S cm−1 at 25 °C. When assembled into LiFePO4/GPEs/Li batteries, a discharge-specific capacity of 81.5 mAh g−1 at a current density of 1 C and a capacity retention rate of 98.1% after 100 cycles at a current density of 0.2 C occurred. Therefore, GPEs added to LLZTO have a broad application prospect regarding rechargeable lithium-ion batteries.

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Section: Resultsmentioning

confidence: 99%

Preparation and Properties of Gel Polymer Electrolytes with Li1.5Al0.5Ge1.5(PO4)3 and Li6.46La3Zr1.46Ta0.54O12 by UV Curing Process

Liang,

Hun,

Lan

et al. 2024

Polymers

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“…In this composite electrolyte, the addition of PVC and EC can greatly reduce the crystallinity of PAN, and EC, as a conductive component, can improve the ionic conductive region of CPEs and improve the ionic conductivity of CPEs. Xu et al 114 prepared a sandwich structure of CPEs. The applied PE was used as the intermediate layer to provide sufficient mechanical strength for CPEs, giving CPEs a mechanical strength of 66.58 MPa.…”

Section: Garnet Ceramicsmentioning

confidence: 99%

A review on modified polymer composite electrolytes for solid-state lithium batteries

Luo

Liu

Gao

et al. 2022

Sustainable Energy Fuels

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“…[ 33 ] The side chain group HFP in PVDF‐HFP can reduce crystallinity and enhance electronic absorption effects of functional groups, further leading to a higher dielectric constant at ambient temperature. [ 34,35 ] Furthermore, PVDF‐HFP exhibits strong resistance to electron loss and high resistance to oxidation due to the high electron affinity of fluorine atoms. [ 36,37 ] Preparing PVDF‐HFP as an intermediate layer of SEs and Li metal is simple; however, its poor ionic conductivity hinders its development.…”

Section: Introductionmentioning

confidence: 99%

PVDF‐HFP via Localized Iodization as Interface Layer for All‐Solid–State Lithium Batteries with Li₆PS₅Cl Films

Liu,

Zhang,

et al. 2023

Small

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All‐solid lithium (Li) metal batteries (ASSLBs) with sulfide‐based solid electrolyte (SEs) films exhibit excellent electrochemical performance, rendering them capable of satisfying the growing demand for energy storage systems. However, challenges persist in the application of SEs film owing to their reactivity with Li metal and uncontrolled formation of lithium dendrites. In this study, iodine‐doped poly(vinylidenefluoride‐hexafluoropropylene) (PVDF‐HFP) as an interlayer (PHI) to establish a stable interphase between Li metal and Li6PS5Cl (LPSCl) films is investigated. The release of I ions and PVDF‐HFP produces LiI and LiF, effectively suppressing lithium dendrite growth. Density functional theory calculations show that the synthesized interlayer layer exhibits high interfacial energy. Results show that the PHI@Li/LPSCl film/PHI@Li symmetrical cells can cycle for more than 650 h at 0.1 mA cm−2. The PHI@Li/LPSCl film/NCM622 cell exhibits a distinct enhancement in capacity retention of ≈26% when using LiNi0.6Mn0.2Co0.2O2 (NCM622) as the cathode, compared to pristine Li metal as the anode. This study presents a feasible method for producing next‐generation dendrite‐free SEs films, promoting their practical use in ASSLBs.

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Sandwich structured PVDF-HFP-based composite solid electrolytes for solid-state lithium metal batteries

Cited by 9 publications

References 38 publications

Preparation and Properties of Gel Polymer Electrolytes with Li1.5Al0.5Ge1.5(PO4)3 and Li6.46La3Zr1.46Ta0.54O12 by UV Curing Process

Preparation and Properties of Gel Polymer Electrolytes with Li1.5Al0.5Ge1.5(PO4)3 and Li6.46La3Zr1.46Ta0.54O12 by UV Curing Process

A review on modified polymer composite electrolytes for solid-state lithium batteries

PVDF‐HFP via Localized Iodization as Interface Layer for All‐Solid–State Lithium Batteries with Li₆PS₅Cl Films

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Sandwich structured PVDF-HFP-based composite solid electrolytes for solid-state lithium metal batteries

Cited by 9 publications

References 38 publications

Preparation and Properties of Gel Polymer Electrolytes with Li1.5Al0.5Ge1.5(PO4)3 and Li6.46La3Zr1.46Ta0.54O12 by UV Curing Process

Preparation and Properties of Gel Polymer Electrolytes with Li1.5Al0.5Ge1.5(PO4)3 and Li6.46La3Zr1.46Ta0.54O12 by UV Curing Process

A review on modified polymer composite electrolytes for solid-state lithium batteries

PVDF‐HFP via Localized Iodization as Interface Layer for All‐Solid–State Lithium Batteries with Li6PS5Cl Films

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Product

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PVDF‐HFP via Localized Iodization as Interface Layer for All‐Solid–State Lithium Batteries with Li₆PS₅Cl Films