Effect of SiO2 coating on polyethylene separator with different stretching ratios for application in lithium ion batteries

K. Prasanna; Chang Soo Kim; Chang Woo Lee

doi:10.1016/j.matchemphys.2014.04.014

Effect of SiO₂ coating on polyethylene separator with different stretching ratios for application in lithium ion batteries

K. Prasanna
, Chang Soo Kim
, Chang Woo Lee

Research output: Contribution to journal › Article › peer-review

76 Citations (Scopus)

Abstract

To enhance the properties of polyethylene separators in lithium ion batteries, we tested separators with uni-axial stretching ratios of 180% and 300%. We also tested stretched separators coated with SiO₂ ceramic substance to increase ionic conductivity and thermal stability without sacrificing mechanical properties. To test the thermal and tensile properties, thermomechanical analyzer (TMA) is employed. CR 2032-type coin cells are prepared by sandwiching pristine and coated stretched separators, respectively, between the Li anode and Li[Ni_1/3Co_1/3Mn _1/3]O₂ cathode to evaluate the AC impedance and cycling performance. The coated separators are observed with superior ionic conductivity, thermal and tensile properties. The cells prepared with coated separator have slightly higher discharge capacity and a better capacity retention ratio than the cells with pristine separators. These results suggest that the coated separator is a better option for lithium ion batteries.

Original language	English
Pages (from-to)	545-550
Number of pages	6
Journal	Materials Chemistry and Physics
Volume	146
Issue number	3
DOIs	https://doi.org/10.1016/j.matchemphys.2014.04.014
Publication status	Published - 14 Aug 2014

Bibliographical note

Funding Information:
This research was supported by a grant ( C12120710 ) from Gyeonggi Technology Development Program funded by Gyeonggi Province .

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Keywords

Ceramics
Coatings
Electrochemical properties
Mechanical properties

Access to Document

10.1016/j.matchemphys.2014.04.014

Cite this

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title = "Effect of SiO2 coating on polyethylene separator with different stretching ratios for application in lithium ion batteries",

abstract = "To enhance the properties of polyethylene separators in lithium ion batteries, we tested separators with uni-axial stretching ratios of 180\% and 300\%. We also tested stretched separators coated with SiO2 ceramic substance to increase ionic conductivity and thermal stability without sacrificing mechanical properties. To test the thermal and tensile properties, thermomechanical analyzer (TMA) is employed. CR 2032-type coin cells are prepared by sandwiching pristine and coated stretched separators, respectively, between the Li anode and Li[Ni1/3Co1/3Mn 1/3]O2 cathode to evaluate the AC impedance and cycling performance. The coated separators are observed with superior ionic conductivity, thermal and tensile properties. The cells prepared with coated separator have slightly higher discharge capacity and a better capacity retention ratio than the cells with pristine separators. These results suggest that the coated separator is a better option for lithium ion batteries.",

keywords = "Ceramics, Coatings, Electrochemical properties, Mechanical properties",

author = "K. Prasanna and Kim, \{Chang Soo\} and Lee, \{Chang Woo\}",

note = "Funding Information: This research was supported by a grant ( C12120710 ) from Gyeonggi Technology Development Program funded by Gyeonggi Province .",

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T1 - Effect of SiO2 coating on polyethylene separator with different stretching ratios for application in lithium ion batteries

AU - Prasanna, K.

AU - Kim, Chang Soo

AU - Lee, Chang Woo

N1 - Funding Information: This research was supported by a grant ( C12120710 ) from Gyeonggi Technology Development Program funded by Gyeonggi Province .

PY - 2014/8/14

Y1 - 2014/8/14

N2 - To enhance the properties of polyethylene separators in lithium ion batteries, we tested separators with uni-axial stretching ratios of 180% and 300%. We also tested stretched separators coated with SiO2 ceramic substance to increase ionic conductivity and thermal stability without sacrificing mechanical properties. To test the thermal and tensile properties, thermomechanical analyzer (TMA) is employed. CR 2032-type coin cells are prepared by sandwiching pristine and coated stretched separators, respectively, between the Li anode and Li[Ni1/3Co1/3Mn 1/3]O2 cathode to evaluate the AC impedance and cycling performance. The coated separators are observed with superior ionic conductivity, thermal and tensile properties. The cells prepared with coated separator have slightly higher discharge capacity and a better capacity retention ratio than the cells with pristine separators. These results suggest that the coated separator is a better option for lithium ion batteries.

AB - To enhance the properties of polyethylene separators in lithium ion batteries, we tested separators with uni-axial stretching ratios of 180% and 300%. We also tested stretched separators coated with SiO2 ceramic substance to increase ionic conductivity and thermal stability without sacrificing mechanical properties. To test the thermal and tensile properties, thermomechanical analyzer (TMA) is employed. CR 2032-type coin cells are prepared by sandwiching pristine and coated stretched separators, respectively, between the Li anode and Li[Ni1/3Co1/3Mn 1/3]O2 cathode to evaluate the AC impedance and cycling performance. The coated separators are observed with superior ionic conductivity, thermal and tensile properties. The cells prepared with coated separator have slightly higher discharge capacity and a better capacity retention ratio than the cells with pristine separators. These results suggest that the coated separator is a better option for lithium ion batteries.

KW - Ceramics

KW - Coatings

KW - Electrochemical properties

KW - Mechanical properties

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