Preparation and electrochemical study of PVDF-HFP/LATP/g-C3N4 composite polymer electrolyte membrane

Zhang, Qian; Wang, Qing; Huang, Shoushuang; Jiang, Yong; Chen, Zhiwen

doi:10.1016/j.inoche.2021.108793

Cited by 30 publications

(19 citation statements)

References 28 publications

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“…The thickness of CPEs was 183.1 μm, and the porous structure formed by PVDF fiber winding nano-LATP particles was conducive to the transport of lithium-ions [ 38 ]. The EDS spectrum in Figure 6 e–h shows the existence of element P, proving that LATP was uniformly distributed in CPEs, which itself was conducive to the formation of lithium-ion migration channels [ 39 ].…”

Section: Resultsmentioning

confidence: 99%

Quasi-Solid-State Lithium-Sulfur Batteries Assembled by Composite Polymer Electrolyte and Nitrogen Doped Porous Carbon Fiber Composite Cathode

et al. 2022

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Solid-state lithium sulfur batteries are becoming a breakthrough technology for energy storage systems due to their low cost of sulfur, high energy density and high level of safety. However, its commercial application has been limited by the poor ionic conductivity and sulfur shuttle effect. In this paper, a nitrogen-doped porous carbon fiber (NPCNF) active material was prepared by template method as a sulfur-host of the positive sulfur electrode. The morphology was nano fiber-like and enabled high sulfur content (62.9 wt%). A solid electrolyte membrane (PVDF/LiClO4/LATP) containing polyvinylidene fluoride (PVDF) and lithium aluminum titanium phosphate (Li1.3Al0.3Ti1.7(PO4)3) was prepared by pouring and the thermosetting method. The ionic conductivity of PVDF/LiClO4/LATP was 8.07 × 10−5 S cm−1 at 25 °C. The assembled battery showed good electrochemical performance. At 25 °C and 0.5 C, the first discharge specific capacity was 620.52 mAh g−1. After 500 cycles, the capacity decay rate of each cycle was only 0.139%. The synergistic effect between the composite solid electrolyte and the nitrogen-doped porous carbon fiber composite sulfur anode studied in this paper may reveal new approaches for improving the cycling performance of a solid-state lithium-sulfur battery.

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Section: Resultsmentioning

confidence: 99%

Quasi-Solid-State Lithium-Sulfur Batteries Assembled by Composite Polymer Electrolyte and Nitrogen Doped Porous Carbon Fiber Composite Cathode

et al. 2022

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“…Composite solid electrolytes (CSEs) combining the advantages of polymer electrolytes and inorganic electrolytes could improve the mechanical properties, ion transport properties, and electrochemical stability. − At present, many works have been done on organic/inorganic composite electrolytes, such as PEO-based, PPC-based, and PVDF-based electrolytes. However, there are some shortcomings in these systems, such as PEO-based CSE has low room-temperature ionic conductivity, PPC-based is unstable and easy to decompose, the interface of PVDF-based electrolytes is unstable, etc. Therefore, selecting suitable polymers to prepare CSEs with excellent performance is the primary issue.…”

Section: Introductionmentioning

confidence: 99%

Al₂O₃ Fiber-Reinforced Polymer Solid Electrolyte Films with Excellent Lithium-Ion Transport Properties for High-Voltage Solid-State Lithium Batteries

Jing

et al. 2022

ACS Appl. Polym. Mater.

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Composite solid electrolytes (CSEs) with high ionic conductivity and good interfacial compatibility are the basis for the practical application of solidstate lithium batteries. The combination of suitable polymers and inorganic fillers is the key to the preparation of CSEs with excellent performance. In this work, a flexible-rigid composite solid electrolyte film was prepared by incorporating different weight ratios (5−20 wt %) of γ-Al 2 O 3 fibers into flexible polypropylene oxide (PPO) polymer electrolytes. Due to the addition of γ-Al 2 O 3 fibers, the ion migration path is shortened and the ion migration rate is effectively improved. At the same time, the Lewis acid groups of γ-Al 2 O 3 fibers react with TFSI − to release more Li + , which increases the number of lithium-ion migration. Therefore, when the content of γ-Al 2 O 3 fibers is 15 wt %, the room-temperature ionic conductivity reaches 3.38 × 10 −4 S cm −1 , the ion migration number is 0.70, and the electrochemical window is 5.6 V. In addition, lithiophilic γ-Al 2 O 3 reacts with Li metal to generate a Li−Al−O transition layer, which promotes Li + interfacial transport and Li uniform deposition, and further inhibits the growth of Li dendrites. This Al 2 O 3 fiber-reinforced CSE improves the lithium-ion transport properties and interface stability between lithium and the electrolyte and has positive practical applications in solid-state lithium batteries.

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“…Inorganic filler-filled polymer solid electrolytes not only retain the flexibility and easy processibility of pure polymer electrolytes, but also can boost its electrochemical properties and mechanical strength. Chen and co-workers prepared a PVDF-HFP/LATP/g-C 3 N 4 composite electrolyte, showing higher mechanical strength and reduced crystallinity, which effectively inhibited lithium dendrite growth . Huang and co-workers combined PEO with LLZO to increase the ionic conductivity of the solid electrolyte, and enhance the thermal stability .…”

Section: Introductionmentioning

confidence: 99%

“…Chen and co-workers prepared a PVDF-HFP/LATP/g-C 3 N 4 composite electrolyte, showing higher mechanical strength and reduced crystallinity, which effectively inhibited lithium dendrite growth. 18 Huang and coworkers combined PEO with LLZO to increase the ionic conductivity of the solid electrolyte, and enhance the thermal stability. 19 However, some other researchers found that the high-filling inorganic fillers could change the migration mode of lithium ions from the segmental migration of polymers to continuous ion network channels formed by inorganic fillers; therefore, the ionic conductivity could be improved.…”

Section: Introductionmentioning

confidence: 99%

A High-Filled Li₇La₃Zr₂O₁₂/Polypropylene Oxide Composite Solid Electrolyte with Improved Lithium-Ion Transport and Safety Performances for High-Voltage Li Batteries

et al. 2022

ACS Appl. Energy Mater.

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The optimized combination of the organic/inorganic components in a composite solid electrolyte (CSE) plays a crucial role in improving its ion conductivity and thermal-mechanical performances. In this work, a high-filled Li7La3Zr2O12 (LLZO)/polypropylene oxide (PPO) CSE film was prepared by introducing LLZO microparticles in a flexible PPO polymer electrolyte. As the content of LLZO increases, the lithium-ion migration pattern is changed from migrating with the PPO chain segment movement to along the continuous fast ion conducting networks formed by the high-filled LLZO particles. When the LLZO content reaches 45 wt %, the room-temperature ion conductivity is up to 3.79 × 10–4 S cm–1, and the potential window is about 5 V. Meanwhile, the addition of LLZO particles enhances the mechanical and thermal properties of the PPO electrolyte, the maximum tensile strength reaches 56.41 Mpa, and the temperature resistance reaches above 200 °C. This CSE film with improved ion transport and safety performances shows high practical significance in the development of solid-state lithium batteries.

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Preparation and electrochemical study of PVDF-HFP/LATP/g-C3N4 composite polymer electrolyte membrane

Cited by 30 publications

References 28 publications

Quasi-Solid-State Lithium-Sulfur Batteries Assembled by Composite Polymer Electrolyte and Nitrogen Doped Porous Carbon Fiber Composite Cathode

Quasi-Solid-State Lithium-Sulfur Batteries Assembled by Composite Polymer Electrolyte and Nitrogen Doped Porous Carbon Fiber Composite Cathode

Al₂O₃ Fiber-Reinforced Polymer Solid Electrolyte Films with Excellent Lithium-Ion Transport Properties for High-Voltage Solid-State Lithium Batteries

A High-Filled Li₇La₃Zr₂O₁₂/Polypropylene Oxide Composite Solid Electrolyte with Improved Lithium-Ion Transport and Safety Performances for High-Voltage Li Batteries

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Preparation and electrochemical study of PVDF-HFP/LATP/g-C3N4 composite polymer electrolyte membrane

Cited by 30 publications

References 28 publications

Quasi-Solid-State Lithium-Sulfur Batteries Assembled by Composite Polymer Electrolyte and Nitrogen Doped Porous Carbon Fiber Composite Cathode

Quasi-Solid-State Lithium-Sulfur Batteries Assembled by Composite Polymer Electrolyte and Nitrogen Doped Porous Carbon Fiber Composite Cathode

Al2O3 Fiber-Reinforced Polymer Solid Electrolyte Films with Excellent Lithium-Ion Transport Properties for High-Voltage Solid-State Lithium Batteries

A High-Filled Li7La3Zr2O12/Polypropylene Oxide Composite Solid Electrolyte with Improved Lithium-Ion Transport and Safety Performances for High-Voltage Li Batteries

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Product

Resources

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Al₂O₃ Fiber-Reinforced Polymer Solid Electrolyte Films with Excellent Lithium-Ion Transport Properties for High-Voltage Solid-State Lithium Batteries

A High-Filled Li₇La₃Zr₂O₁₂/Polypropylene Oxide Composite Solid Electrolyte with Improved Lithium-Ion Transport and Safety Performances for High-Voltage Li Batteries