Abstract
The separator is a critical component in liquid electrolyte batteries, and closely related to the battery performance such as cycle number and safety. In this work, thin (∼2 μm) films of MFI zeolite with different Si/Al ratios are coated on both sides of the commercial polypropylene separator for lithium ion batteries. The electrolyte solvent wettability of the MFI zeolite coated separators decreases with increasing Si/Al ratio of the zeolite films. Polypropylene separator coated with MFI zeolite (Si/Al = 25) film (ZCPP25) shows very high wettability for electrolyte. The Li4Ti5O12/Li cell with ZCPP25 separator exhibits best charge and discharge performance among the cells with pure or coated polypropylene separators. Under relatively high current rate, the cell with MFI zeolite coated separator shows better charge and discharge capacities and cycling stability than that of uncoated polypropylene separator. The cell with MFI zeolite coated separator also performs better than the cell with uncoated polypropylene separator in a wider temperature range. The enhanced performance for cells with MFI zeolite coated separator is caused by the better filling of the electrolyte at the separator/electrode interface due to the improved electrolyte solvent wettability.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 406-414 |
| Number of pages | 9 |
| Journal | Microporous and Mesoporous Materials |
| Volume | 226 |
| DOIs | |
| State | Published - May 15 2016 |
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Keywords
- Dip-coating
- Lithium ion battery
- MFI zeolite
- Separator
- Wettability
ASJC Scopus subject areas
- Materials Science(all)
- Mechanics of Materials
- Chemistry(all)
- Condensed Matter Physics
Cite this
Zeolite coated polypropylene separators with tunable surface properties for lithium-ion batteries. / Dong, Xueliang; Mi, Wanliang; Yu, Linghui; Jin, Yi; Lin, Jerry.
In: Microporous and Mesoporous Materials, Vol. 226, 15.05.2016, p. 406-414.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Zeolite coated polypropylene separators with tunable surface properties for lithium-ion batteries
AU - Dong, Xueliang
AU - Mi, Wanliang
AU - Yu, Linghui
AU - Jin, Yi
AU - Lin, Jerry
PY - 2016/5/15
Y1 - 2016/5/15
N2 - The separator is a critical component in liquid electrolyte batteries, and closely related to the battery performance such as cycle number and safety. In this work, thin (∼2 μm) films of MFI zeolite with different Si/Al ratios are coated on both sides of the commercial polypropylene separator for lithium ion batteries. The electrolyte solvent wettability of the MFI zeolite coated separators decreases with increasing Si/Al ratio of the zeolite films. Polypropylene separator coated with MFI zeolite (Si/Al = 25) film (ZCPP25) shows very high wettability for electrolyte. The Li4Ti5O12/Li cell with ZCPP25 separator exhibits best charge and discharge performance among the cells with pure or coated polypropylene separators. Under relatively high current rate, the cell with MFI zeolite coated separator shows better charge and discharge capacities and cycling stability than that of uncoated polypropylene separator. The cell with MFI zeolite coated separator also performs better than the cell with uncoated polypropylene separator in a wider temperature range. The enhanced performance for cells with MFI zeolite coated separator is caused by the better filling of the electrolyte at the separator/electrode interface due to the improved electrolyte solvent wettability.
AB - The separator is a critical component in liquid electrolyte batteries, and closely related to the battery performance such as cycle number and safety. In this work, thin (∼2 μm) films of MFI zeolite with different Si/Al ratios are coated on both sides of the commercial polypropylene separator for lithium ion batteries. The electrolyte solvent wettability of the MFI zeolite coated separators decreases with increasing Si/Al ratio of the zeolite films. Polypropylene separator coated with MFI zeolite (Si/Al = 25) film (ZCPP25) shows very high wettability for electrolyte. The Li4Ti5O12/Li cell with ZCPP25 separator exhibits best charge and discharge performance among the cells with pure or coated polypropylene separators. Under relatively high current rate, the cell with MFI zeolite coated separator shows better charge and discharge capacities and cycling stability than that of uncoated polypropylene separator. The cell with MFI zeolite coated separator also performs better than the cell with uncoated polypropylene separator in a wider temperature range. The enhanced performance for cells with MFI zeolite coated separator is caused by the better filling of the electrolyte at the separator/electrode interface due to the improved electrolyte solvent wettability.
KW - Dip-coating
KW - Lithium ion battery
KW - MFI zeolite
KW - Separator
KW - Wettability
UR - http://www.scopus.com/inward/record.url?scp=84959449765&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84959449765&partnerID=8YFLogxK
U2 - 10.1016/j.micromeso.2016.02.006
DO - 10.1016/j.micromeso.2016.02.006
M3 - Article
AN - SCOPUS:84959449765
VL - 226
SP - 406
EP - 414
JO - Microporous and Mesoporous Materials
JF - Microporous and Mesoporous Materials
SN - 1387-1811
ER -