Novel single-ion conducting electrolytes based on vinylidene fluoride copolymer for lithium metal batteries

Nguyen, Tinh; Lopez, Gérald; Iojoiu, Cristina; Bouchet, Renaud; Améduri, Bruno

doi:10.1016/j.jpowsour.2021.229920

Cited by 22 publications

(24 citation statements)

References 79 publications

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“…44,45 In fact, there are many such parameters, such as the assembly process, the properties of electrolytes and electrodes, the effect of interface impedance on the battery performance. 54,57 In the near future, the assembly process of LMBs will be further optimized in our laboratory.…”

Section: Discussionmentioning

confidence: 99%

PVDF-HFP-Based Composite Electrolyte Membranes having High Conductivity and Lithium-Ion Transference Number for Lithium Metal Batteries

Liu

Lin

et al. 2021

ACS Appl. Energy Mater.

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Lithium metal batteries (LMBs) with liquid-based electrolytes usually suffer from safety problems such as the growth of Li dendrites and the leakage and volatilization of organic solvents. Replacing liquid-based electrolytes using solid polymer electrolytes may resolve these problems. In this study, sulfonated polyvinylidene fluoride lithium-hexafluoropropylene (SPVDFLi-HFP), a single-ion conductive polymer, is synthesized from polyvinylidene fluoride-hexafluoropropylene (PVDF-HFP) and chlorosulfonic acid, and a series of LMBs are fabricated using SPVDFLi-HFPx/PVDF-HFP composite electrolyte membranes and characterized. The as-prepared SPVDFLi-HFPx/PVDF-HFP composite electrolyte membranes possess high conductivity (2.84 × 10 −4 S cm −1 ), a wide electrochemical window (5.4 V, vs Li/Li + ), and high interface compatibility with lithium metal anodes. Benefiting from the single-ion conductive nature of SPVDFLi-HFP, SPVDFLi-HFP50/PVDF-HFP exhibits a high lithium-ion transference number of 0.81. A solid-state LiFePO 4 |SPVDFLi-HFP50/ PVDF-HFP|Li battery exhibits an initial capacity of 147.9 mA h g −1 , a capacity retention of 89.1% at the end of 200 cycles, and an average Coulombic efficiency exceeding 99% at 0.2 C, demonstrating strong application potential in LMBs.

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Section: Discussionmentioning

confidence: 99%

PVDF-HFP-Based Composite Electrolyte Membranes having High Conductivity and Lithium-Ion Transference Number for Lithium Metal Batteries

Liu

Lin

et al. 2021

ACS Appl. Energy Mater.

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“…Two peaks at −0.5 and 0.34 V vs Li + /Li are found in Figure a, corresponding to reversible lithium plating and stripping of the working electrode . There is a peak near 1 V vs Li + /Li, which may be related to intercalation/deintercalation in the oxide layer on the stainless steel working electrode . The oxidation potentials of the PUA-I-30 and PUA-II-30 membranes are similar, and both exceed 4 V, indicating that all PUA ionomers are suitable for traditional cathode materials, such as LiFePO 4 .…”

Section: Resultsmentioning

confidence: 95%

“…68 There is a peak near 1 V vs Li + /Li, which may be related to intercalation/deintercalation in the oxide layer on the stainless steel working electrode. 57 The oxidation potentials of the PUA-I-30 and PUA-II-30 membranes are similar, and both exceed 4 V, indicating that all PUA ionomers are suitable for traditional cathode materials, such as LiFePO 4 . This is also consistent with the ESW of the reported single-ion conductors (Table 4).…”

Section: Electrochemical Stability Windowmentioning

confidence: 90%

Single-Ion Conducting Polymer Electrolytes Based on Random Polyurethane–Urea with Different Diisocyanate Structures for Lithium Batteries

Wang

Chen

Sun

et al. 2022

ACS Appl. Energy Mater.

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Polyurethane−urea ionomers based on poly(ethylene oxide) (PEO) with various hard segment contents were synthesized from diisocyanates with different symmetries and planarities. The influence of the random copolymer microphase structure (including the phase separation morphology and hydrogen bonding behavior) on the ion states and ion migration was investigated. The soft phase could maintain a low glass transition temperature to yield samples with good ionic conductivity when the hard segment was less than 48 wt %. Furthermore, the hard phase and hydrogen bonds could provide good mechanical strength. Fourier transform infrared spectroscopy and small-angle X-ray scattering confirmed that ionomers with a smaller degree of phase separation had a high fraction of ions in isolated ion pairs. Coupled with faster segmental dynamics and ion mobility from the depressed T g , the polyurethane−urea ionomer simultaneously showed high strength and ionic conductivity. After plasticization, the prepared single-ion conductor was successfully tested in lithium cells, demonstrating outstanding discharge capacity (166 mAh g −1 ), Coulombic efficiency (96.5%), and retention (92.6% after 100 cycles) at 0.1 C and high temperature.

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Section: Introductionmentioning

confidence: 99%

“…The most commonly used polymer matrixes for SPEs are poly(ethylene oxide) (PEO); 11 poly(vinylidene fluoride) (PVDF); 12 and its copolymers, 13 poly(ethylene glycol) (PEG), 14 poly(acrylonitrile) (PAN), 15 and poly(ethylene carbonate) (PEC). 16 The filler incorporated into the polymer matrix can have either active or passive roles with respect to battery electrochemical performance.…”

Section: Introductionmentioning

confidence: 99%

Toward Sustainable Solid Polymer Electrolytes for Lithium-Ion Batteries

2022

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Lithium-ion batteries (LIBs) are the most widely used energy storage system because of their high energy density and power, robustness, and reversibility, but they typically include an electrolyte solution composed of flammable organic solvents, leading to safety risks and reliability concerns for high-energy-density batteries. A step forward in Li-ion technology is the development of solid-state batteries suitable in terms of energy density and safety for the next generation of smart, safe, and high-performance batteries. Solid-state batteries can be developed on the basis of a solid polymer electrolyte (SPE) that may rely on natural polymers in order to replace synthetic ones, thereby taking into account environmental concerns. This work provides a perspective on current state-of-the-art sustainable SPEs for lithium-ion batteries. The recent developments are presented with a focus on natural polymers and their relevant properties in the context of battery applications. In addition, the ionic conductivity values and battery performance of natural polymer-based SPEs are reported, and it is shown that sustainable SPEs can become essential components of a next generation of high-performance solid-state batteries synergistically focused on performance, sustainability, and circular economy considerations.

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Novel single-ion conducting electrolytes based on vinylidene fluoride copolymer for lithium metal batteries

Cited by 22 publications

References 79 publications

PVDF-HFP-Based Composite Electrolyte Membranes having High Conductivity and Lithium-Ion Transference Number for Lithium Metal Batteries

PVDF-HFP-Based Composite Electrolyte Membranes having High Conductivity and Lithium-Ion Transference Number for Lithium Metal Batteries

Single-Ion Conducting Polymer Electrolytes Based on Random Polyurethane–Urea with Different Diisocyanate Structures for Lithium Batteries

Toward Sustainable Solid Polymer Electrolytes for Lithium-Ion Batteries

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