High performing magnesium aluminate-coated separator for lithium batteries

Raja, Muhammad Asif Zahoor; Bicy, K; Suriyakumar, Shruti; Angulakshmi, N.; Thomas, Sabu; Stephan, A. Manuel

doi:10.1007/s11581-018-2496-4

Cited by 13 publications

(7 citation statements)

References 37 publications

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“…For the DSC analysis, the endothermic peak of the PE separator is located around 150°C caused by the melting of PE. Two endothermic peaks of the PET/ceramic non-woven separator appear around and 255°C, which are ascribed to the melting of the binder and PET [36][37][38] . The DSC analysis reveals that the beginning melting temperature of the PET separator is 220°C, which is much higher than that of the PE separator.…”

Section: Resultsmentioning

confidence: 99%

“…Therefore, it is necessary to develop new types of single polymer or composite separators to fulfill the thermal stability requirements of LIBs [28–33] . Ceramic‐based composite separators are prepared to mitigate the performance‐limitations of the conventionally used separator [34–39] . Nonwoven fabric based separators with excellent thermal stability and higher electrolyte take‐up are also getting more attentions recently [40–41] .…”

Section: Introductionmentioning

confidence: 99%

“…[28][29][30][31][32][33] Ceramic-based composite separators are prepared to mitigate the performance-limitations of the conventionally used separator. [34][35][36][37][38][39] Nonwoven fabric based separators with excellent thermal stability and higher electrolyte take-up are also getting more attentions recently. [40][41] However, the TR mechanism in LIBs is still controversial in regard to the roles of anode and cathode.…”

Section: Introductionmentioning

confidence: 99%

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Enhanced Safety Performance of Automotive Lithium‐Ion Batteries with Al₂O₃‐Coated Non‐Woven Separator

Meng

Gao

Zhang

et al. 2020

Batteries & Supercaps

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Thermal runaway (TR) is the fatal safety defects that hinder the wide application of automotive batteries. The short circuit caused by shrinkage of separators under high temperatures leads to TR. In this paper, we demonstrate the robust thermal stability of an Al2O3 coated non‐woven polyethylene terephthalate (PET) separator. The shrinkage ratio of the Al2O3 coated separator has been compared with the non‐coated polyethylene (PE) separator by differential scanning calorimetry (DSC), thermogravimetry (TG ) and heat nail tests. Automotive lithium‐ion batteries (LIBs) with large capacities have been used to conduct the simulations of nail penetration. TR is found to be triggered by Joule heat generation during the shrinkage of the separators. The separator with lower shrinkage retains highly stable dimension against wide range temperature changes. This feature enables the Al2O3 coated separator to prevent inner short circuits. The improved safety performance indicates a promising prospect of Al2O3 coated non‐woven separators in LIBs.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Enhanced Safety Performance of Automotive Lithium‐Ion Batteries with Al₂O₃‐Coated Non‐Woven Separator

Meng

Gao

Zhang

et al. 2020

Batteries & Supercaps

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“…The cells were cycled over a voltage range of 3.0–4.2 V. Figure a shows the battery rate performance of PE and the composite separators at the current densities of 0.2, 0.5, 1, and 2 C. A larger reduction in discharge capacity was observed at 1 C. The reduction in discharge capacity at higher current is a typical characteristic of LiFePO 4 that can be attributed to its low electronic conductivity and the limited diffusion of Li + ion into its structure, which leads to electrode polarization. [ 34 ] The discharge specific capacities of PE@L n SiO 2 improved compared with those of PE and PE@SiO 2 under different discharge current densities. The discharge specific capacities of PE and PE@SiO 2 were only 105 and 113 mAh g −1 at 2 C, respectively, whereas the discharge specific capacities of PE@L1SiO 2 , PE@L2SiO 2 , and PE@L4SiO 2 markedly increased and reached 127, 130, and 132 mAh g −1 , respectively.…”

Section: Resultsmentioning

confidence: 99%

The Enhanced Performance of Polyethylene Composite Separators by the Modification of Lithium Salt@SiO₂ Nanoparticles

You

Duan

et al. 2021

Macro Materials & Eng

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Improving the dimensional thermal stability and electrochemical performance of polyethylene (PE) membrane is critical to enhance the safety performance of lithium-ion battery. In this paper, PE membranes are modified by lithium bis(trifuoromethanesulfonyl)imide (LiTFSI) solution and then coated with nano-SiO 2 /polyvinyl alcohol solution to obtain composite membranes (PE@LnSiO 2 , where n represents the concentration of LiTFSI solution). The obtained PE@L4SiO 2 (LiTFSI solution concentration is 4%) composite membrane possesses a thermal shrinkage rate of only 17% at 150°C, which is far superior to that of the PE separator. The ionic conductivity of the composite membrane is 16.9 × 10 −4 S cm −1 at room temperature (RT), and the battery impedance decreases to 154 , which is remarkably better than that of the PE membrane (188 ). The battery delivers a reversible discharge capacity of 164 mAh g −1 at 0.2 C under RT after 250 cycles, and the coulomb efficiency remains above 99%. The battery also has a high discharge capacity of 132 mAh g −1 at 2 C, which indicates that it has excellent rate performance. Therefore, this research successfully explores a simple method to effectively improve the dimensional thermal stability of PE separator, as well as the electrochemical and safety performance of lithium battery.

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“…[8] The integration of solid additives in the sulfur cathode has been recognized as an efficient way in trapping of polysulfides. Several efforts have also been made to restrain the polysulfides within the composite sulfur cathode by the introduction of inorganic materials such as NiFe 2 O 4 [7] and MgAl 2 O 4 , [9] owing to their strong electrostatic interaction of polysulfides. Very recently we have reported the cycling performance of Li S cell in which Fe 3 O 4 -seated rGO was incorporated as a solid additive in the sulfur cathode in order to improve the conductivity of sulfur and to confine polysulfide from shuttling.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Charge‐ Discharge Behaviour of MnFe₂O₄ laden Composite Cathode for Lithium‐Sulfur Batteries

Mathew

Rani

Jenis³

et al. 2021

ChemistrySelect

Self Cite

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The LiÀ S battery commercialization has been hampered owing to challenging problems such as poor conductivity of elemental sulfur, volume change upon cycling, and shuttling of lithium polysulfide between the electrodes. To conquer these issues, a sensible electrode structure design is crucial. The incorporation of carbonaceous materials and metal oxides has been identified as an effective tool to foster the electrochemical properties of LiÀ S batteries. In this work, to confine polysulfide shuttling and to improve the conductivity of sulfur, MnFe 2 O 4 -seated rGOsulfur composite was prepared and used as a cathode. The lithium-sulfur cell with MnFe 2 O 4 -seated rGO-sulfur composite cathode showed outstanding electrochemical performance delivering a discharge capacity of 1300 mAh g À 1 at 0.1 C-rate on its first cycle and a stable cycling was attained at 0.5 C-rate. In the composite cathode, each component functions for a specific reason: the rGO in the composite improves the conductivity of sulfur, while added-MnFe 2 O 4 not only confines polysulfides appreciably but also provides integrity to the cathode as evidenced by SEM analysis. The self-discharge studies showed that the LiÀ S cell with MnFe 2 O 4 was capable of retaining its charge even after 90 h which has overhead the earlier reports. The LiÀ S system with MnFe 2 O 4 -laden cathode material exhibited better electrochemical properties than the un-laden one.

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High performing magnesium aluminate-coated separator for lithium batteries

Cited by 13 publications

References 37 publications

Enhanced Safety Performance of Automotive Lithium‐Ion Batteries with Al₂O₃‐Coated Non‐Woven Separator

Enhanced Safety Performance of Automotive Lithium‐Ion Batteries with Al₂O₃‐Coated Non‐Woven Separator

The Enhanced Performance of Polyethylene Composite Separators by the Modification of Lithium Salt@SiO₂ Nanoparticles

Enhanced Charge‐ Discharge Behaviour of MnFe₂O₄ laden Composite Cathode for Lithium‐Sulfur Batteries

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High performing magnesium aluminate-coated separator for lithium batteries

Cited by 13 publications

References 37 publications

Enhanced Safety Performance of Automotive Lithium‐Ion Batteries with Al2O3‐Coated Non‐Woven Separator

Enhanced Safety Performance of Automotive Lithium‐Ion Batteries with Al2O3‐Coated Non‐Woven Separator

The Enhanced Performance of Polyethylene Composite Separators by the Modification of Lithium Salt@SiO2 Nanoparticles

Enhanced Charge‐ Discharge Behaviour of MnFe2O4 laden Composite Cathode for Lithium‐Sulfur Batteries

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Product

Resources

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Enhanced Safety Performance of Automotive Lithium‐Ion Batteries with Al₂O₃‐Coated Non‐Woven Separator

Enhanced Safety Performance of Automotive Lithium‐Ion Batteries with Al₂O₃‐Coated Non‐Woven Separator

The Enhanced Performance of Polyethylene Composite Separators by the Modification of Lithium Salt@SiO₂ Nanoparticles

Enhanced Charge‐ Discharge Behaviour of MnFe₂O₄ laden Composite Cathode for Lithium‐Sulfur Batteries