Journal
MATERIALS CHEMISTRY AND PHYSICS
Volume 146, Issue 3, Pages 545-550Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.matchemphys.2014.04.014
Keywords
Ceramics; Coatings; Electrochemical properties; Mechanical properties
Categories
Funding
- Gyeonggi Technology Development Program by Gyeonggi Province [C12120710]
Ask authors/readers for more resources
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[Ni1/3Co1/3Mn1/3]O-2 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. (C) 2014 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available