Gel hybrid copolymer of organic palygorskite and methyl methacrylate electrolyte coated onto Celgard 2325 applied in lithium ion batteries

Tian, Lanlan; Huang, Chao; Wang, Mengkun; Zhang, Hairong; Chen, Xinde

doi:10.1002/app.47970

Cited by 6 publications

(3 citation statements)

References 33 publications

(41 reference statements)

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“…Wang et al coated PVDF organic particles on traditional PE separators to achieve good electrolyte wettability. However, the battery capacity based on the coated separator was not high enough (122 mAh g -1 under 1C) and could not involve the long cycle performance of the battery [27] . Tian et al fabricated a composite separator by coating organic palygorskite and methyl methacrylate (MMA) onto both sides of a polyolefin-based separator.…”

Section: Introductionmentioning

confidence: 99%

Functionalized polypropylene separator coated with polyether/polyester blend for high-performance lithium metal batteries

Ye,

Fan,

Zhou

et al. 2024

Energy Mater

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Commercial polyolefin separators used in lithium metal batteries (LMBs) have the disadvantages of insufficient thermal stability and poor wettability with electrolytes, which causes bad safety and battery performance. Poly(ε-caprolactone) (PCL)-based electrolytes have drawn widespread attention in the field of polymer electrolytes owing to their electrochemical stability and high lithium-ion transference number. This work proposes a strategy of functionalizing commercial polypropylene (PP) separator coated by blending PCL (M w ~ 50,000) and poly(ethylene oxide) (PEO, M V ~ 600,000). Compared to commercial PP separators, PP-blended PEO60w/PCL5w separators possess better wettability with electrolytes and electrochemical performances. The initial discharge specific capacity of LiFePO4-based LMBs assembled with PP-blended PEO60w/PCL5w separators reaches 144 mAh g-1 (1C) and 103 mAh g-1 (5C) at room temperature, respectively. Notably, Li/PP-blended PEO60w/PCL5w/LiFePO4 shows an improved capacity retention rate of 77% after 800 cycles, confirming that the functionalized separator with coated PEO/PCL blend has great potential for application in the field of LMBs.

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Section: Introductionmentioning

confidence: 99%

Functionalized polypropylene separator coated with polyether/polyester blend for high-performance lithium metal batteries

Ye,

Fan,

Zhou

et al. 2024

Energy Mater

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“…On the other hand, oxygen-containing functional groups on dopants promote ion migration in electrolytes during the electrochemical procedure. Palygorskite (PAL) is a kind of dopant, which is an abundant magnesium aluminum silicate mineral. , Palygorskites with polar functional groups form natural channels for ion transport and enhance the mechanical properties of polymer substrates as well. , Thus, it is essential to develop PAL–PVA polyelectrolytes based on cheap raw materials and aqueous electrolytes for energy storage devices with superior mechanical, electrical, and electrochemical properties.…”

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confidence: 99%

1.89 $ kg^–1 Lake-Water-Based Semisolid Electrolytes for Highly Efficient Energy Storage

Lü

Chen

2023

Nano Lett.

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Solid electrolytes with fast ion kinetics and superior mechanical properties are critical to electrochemical energy devices; however, how to design low-cost, high-performance solid electrolytes has become a critical challenge in the energy field, and significant progress has not been achieved until now.Here, lake-water-based semisolid electrolytes with a low cost of 1.89 $ kg −1 have been put forward for the purpose of market promotion. By virtue of the palygorskite dopants and lake water source, the electrolytes display satisfying mechanical, electrical, and electrochemical properties as well as economic benefits. The application potential of electrolytes has been demonstrated by employing a polyelectrolyte with ionic conductivity of 0.82 × 10 −4 S cm −1 in flexible supercapacitors. The as-assembled devices give a high energy density of 54.72 Wh kg −1 and excellent cycling stability with a capacity retention of 94.8% over 20 000 cycles. The flexibility of devices has been verified through 5000 repetitive bending tests. Our work presents insight into the design of flexible solid electrolytes based on cheap and green raw materials.

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“…However, they also suffer from many drawbacks, low ion conductivity, poor compatibility with electrolytes, and extensive shrinkage especially at high temperatures. [5,[9][10][11][12] Therefore, various approaches have been adopted to overcome those drawbacks.…”

mentioning

confidence: 99%

Controllable Coaxial Coating of Boehmite on the Surface of Polyimide Nanofiber Membrane and Its Application as a Separator for Lithium‐Ion Batteries

Liu

Yang

et al. 2022

Energy Tech

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The explosive expansion of the digital era and the rapid consumption of traditional energy such as fossil fuels have made lithium-ion batteries (LIBs) indispensable in our future. Battery applications are rapidly expanding from small 3C electronic devices to large power equipment fields such as pure electric vehicles, large energy storage, and pure electric aircraft. [1][2][3] Because of its characteristics of high energy density, high power density, and low selfdischarge rate, [2] in recent years, largecapacity and high-specific-energy LIBs have developed rapidly. However, as the energy density and power density grow, battery safety becomes more prominent. The operational temperature range of LIBs is narrow, and [4] when LIBs are subjected to conditions outside of their design window, they may fail through a rapid self-heating or thermal runaway, which may ignite the surrounding materials. [5] Several incidents involving LIBs have been reported over the last couple of years. [6,7] This is mainly because the current commercial separators mostly use polypropylene (PP) and polyethylene (PE) as the matrix of the polyolefin microporous membrane; its low melting point and softening temperature make the battery prone to thermal runaway caused by the disintegration of separators. Therefore, to solve the safety problem of LIBs, it is urgent to develop a new type of LIB separator with excellent thermal stability, outstanding flame retardant property, and excellent electrolyte wettability.The separator can prevent contact between the anode and cathode, playing an important role in battery safety. Currently, most commercial LIBs separators are polyolefin microporous separators, such as including PE and PP. [8] Those separators have many advantages such as good mechanical strength, excellent electrochemical stability, and sufficient chemical stability. However, they also suffer from many drawbacks, low ion conductivity, poor compatibility with electrolytes, and extensive shrinkage especially at high temperatures. [5,[9][10][11][12] Therefore, various approaches have been adopted to overcome those drawbacks.

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Gel hybrid copolymer of organic palygorskite and methyl methacrylate electrolyte coated onto Celgard 2325 applied in lithium ion batteries

Cited by 6 publications

References 33 publications

Functionalized polypropylene separator coated with polyether/polyester blend for high-performance lithium metal batteries

Functionalized polypropylene separator coated with polyether/polyester blend for high-performance lithium metal batteries

1.89 $ kg^–1 Lake-Water-Based Semisolid Electrolytes for Highly Efficient Energy Storage

Controllable Coaxial Coating of Boehmite on the Surface of Polyimide Nanofiber Membrane and Its Application as a Separator for Lithium‐Ion Batteries

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Gel hybrid copolymer of organic palygorskite and methyl methacrylate electrolyte coated onto Celgard 2325 applied in lithium ion batteries

Cited by 6 publications

References 33 publications

Functionalized polypropylene separator coated with polyether/polyester blend for high-performance lithium metal batteries

Functionalized polypropylene separator coated with polyether/polyester blend for high-performance lithium metal batteries

1.89 $ kg–1 Lake-Water-Based Semisolid Electrolytes for Highly Efficient Energy Storage

Controllable Coaxial Coating of Boehmite on the Surface of Polyimide Nanofiber Membrane and Its Application as a Separator for Lithium‐Ion Batteries

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1.89 $ kg^–1 Lake-Water-Based Semisolid Electrolytes for Highly Efficient Energy Storage