Fabrication and Performance of PET-ceramic Separators

doi:10.15541/jim20160159

Abstract

Abstract:

Ceramic-coating separators were prepared with poly(ethylene terephthalate) (PET) nonwoven membrane as the substrate. Different particle sizes and variable ratios of SiO₂ and Al₂O₃ were coated on the PET surface by dip coating technology, using PVDF-HFP as the binder. The separators took advantage of both kinds of ceramic particles, so that the big pores of PET were filled more effectively. Surface morphology, porosity, electrolyte wettability, thermal stability, ionic conductivity, and electrochemical impedance spectroscope (EIS) of composite separators with different ratios of SiO₂to Al₂O₃ were systematically investigated, and separators with ratio of SiO₂/Al₂O₃=3/7 showed superior performance. Electrochemical properties of MCMB / LiNi_1/3Co_1/3Mn_1/3O₂2025-type coin cells assembled by the ceramic separators with ratio of SiO₂/Al₂O₃=3/7 were also tested, as compared with commercialized PP separators. The results demonstrated that the ceramic separators performed with 93.9% capacity retention after 100 cycles and capacity of 82.7 mAh/g at 10C rate, better than PP separators.

Key words: PET, ceramic separator, thermal stability, electrochemical properties

CLC Number:

TM912

XIE Xiao-Hua, LI Xiao-Zhe, LI Wei-Biao, SHAO Guang-Jie, XIA Bao-Jia. Fabrication and Performance of PET-ceramic Separators[J]. Journal of Inorganic Materials, 2016, 31(12): 1301-1305.

Figures/Tables 7

Fig. 1 SEM images of PET-ceramic separator^(a) S-0; (b) S-1; (c) S-2; (d) S-3; (e) S-4

Fig. 2 Porosity (a), electrolyte wettability (b), ionic conductivity (c) of PET-ceramic separator and PP separator

Fig. 3 Thermal stability of S-1 separator and PP separator

Fig. 4 LSV curves of S-1 separator and PP separator

Fig. 5 Self-discharge curves of cells fabricated with S-1 separator and PP separator

Fig. 6 Rate capacity (a) and cycle performance (b) of cells fabricated with S-1 separator and PP separator

Fig. 7 Electrochemical impedance spectroscopy of cells fabricated with S-1 separator and PP separator

References 10

[1]	SHIN W K, KIM D W.High performance ceramic-coated separators prepared with lithium ion-containing SiO2 particles for lithium-ion batteries.J. Power Sources, 2013, 226: 54-60.
[2]	FU D, LUAN B, ARUGE S,et al. Nano SiO2 particle formation and deposition on polypropylene separators for lithium-ion batteries. J. Power Sources, 2012, 206: 325-333.
[3]	JEONG H S, CHOI E S, LEE S Y.Composition ratio-dependent structural evolution of SiO2/poly (vinylidene fluoride-hexafluoropropylene)-coated poly(ethylene terephthalate) nonwoven composite separators for lithium-ion batteries. Electrochimica Acta, 2012, 86: 317-322.
[4]	JEONG H S, HONGS C, LEE S Y.Effect of microporousstructure on thermal shrinkage and electrochemical performance of Al2O3 poly (vinylidene fluoride-hexafluoropropylene) composite separators for lithium-ion batteries.J. Membrane Science, 2010, 364(1/2): 177-182.
[5]	LEE J, LEE C L, PARK K,et al. Synthesis of an Al2O3-coated polyimide nanofiber mat and its electrochemical characteristics as a separator for lithium ion batteries. J. Power Sources, 2014, 248: 1211-1217.
[6]	LEE Y S, JEONG Y B, KIM D W.Cycling performance of lithium- ion batteries assembled with a hybrid composite membrane prepared by an electrospinning method.J. Power Sources, 2010, 195(18): 6197-6201.
[7]	Orendorff C J.The role of separators in lithium ion cell safety.The Electrochemical society interface, 2012, 21(2): 61-65.
[8]	CHO J H, PARK J H, KIM J H,et al. Facile fabrication of nanoporous composite separator membranes for lithium-ion batteries: poly (methyl methacrylate) colloidal particles-embedded nonwoven poly (ethylene terephthalate). J. Mater. Chem., 2011, 21:8192-8196.
[9]	LIANG X, YANG Y, JIN X,et al. The high performances of SiO2/Al2O3-coated electrospun polyimide fibrous separator for lithium-ion battery. J. Membr. Sci., 2015, 493: 1-7.
[10]	LI J, ZHANG J, ZHANG X G,et al. Study of the storage performance of a Li-ion cell at elevated temperature. Electrochimica Acta, 2010, 55: 927-934.

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