Close-Packed Al2O3 Nanoparticles/Waterborne Polyurethane Layer-Coated Polyethylene Separators for Lithium-Ion Batteries

Yi Ping Gao; Jun Le; Xiao Cheng Sheng; Xiao Wei Zhang

doi:10.4028/www.scientific.net/AMR.724-725.823

Paper Titles

Thermal Security Analysis of Lithium-Ion Batteries Based on Electro-Thermal Modeling
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Microwave Synthesis of MnO₂/C and its Applications in Zinc-Air Battery
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Preparation and Study of Zinc-Air Batteries with Carbon-Supported Amorphous MnO₂ Catalyst
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The Study on Technology of Ocean Wave Energy Generation
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Close-Packed Al₂O₃ Nanoparticles/Waterborne Polyurethane Layer-Coated Polyethylene Separators for Lithium-Ion Batteries
p.823

Dynamic Measurement and Estimation of Power Battery Residual Capacity
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Hard Carbon Prepared from Willow Leaves Using as Anode Materials for Li-Ion Batteries
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Preparation of Li₂FeSiO₄/C Composite Cathode Materials for Lithium Ion Batteries by Carbothermal Reduction Method
p.838

Dual Carbon Coating Used in the Preparation of LiFePO₄/C Cathode Material
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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 724-725Close-Packed Al2O3 Nanoparticles/Waterborne...

Close-Packed Al₂O₃ Nanoparticles/Waterborne Polyurethane Layer-Coated Polyethylene Separators for Lithium-Ion Batteries

Abstract:

Separator shutdown by interrupting the transmission of lithium ions to terminate the battery reaction is a valid safety mechanism for preventing thermal runaway reactions in lithium ion batteries. Yet the cell temperature continues rising after the shutdown, the separator need sufficient thermal stability to physically isolate the electrodes. To reduce the thermal shrinkage of polyethylene (PE) separators, a fresh composite separator is developed by introducing alumina (Al₂O₃) nanoparticles/waterborne polyurethane (WPU) layer on one side of the pristine PE separator via casting process. The microporous structure of the composite separator is supposed to be a significant consideration for the cell performance, which is confirmed by the scanning electron microscope. Compared with the pristine PE separator, the thermal shrinkage of the novel separator improved markedly with an acceptable decline in air permeability and ion conductivity.

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Advanced Materials Research (Volumes 724-725)

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823-828

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https://doi.org/10.4028/www.scientific.net/AMR.724-725.823

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Online since:

August 2013

Authors:

Yi Ping Gao, Jun Le, Xiao Cheng Sheng, Xiao Wei Zhang

Keywords:

Coating, Lithium-Ion Battery, Polyethylene, Separator, Thermal Stability

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