Abstract
The safety of lithium ion batteries can be improved by using ion conductive gels as electrolyte. For this purpose, gel electrolytes are required to exhibit high ionic conductivity and paired with a low temperature dependence. In this study, several matrix polymers for gel electrolytes with different degrees of polymerization between crosslinks and side chains were prepared. Their swelling ratio and ionic conductivity were measured. The matrix polymer which was made from ethylene glycol dimethacrylate as multifunctional monomer and vinyl acetate as monofunctional monomer showed a high swelling ratio. Ionic conductivity of the gel electrolyte was 4.9 mS/cm at 20°C and its activation energy was 14.3 kJ/mol. Our results suggest that the use of block copolymerization type monomers that show a weak interaction between polymers and lithium ions are effective.
| Original language | English |
|---|---|
| Pages (from-to) | 350-355 |
| Number of pages | 6 |
| Journal | KOBUNSHI RONBUNSHU |
| Volume | 67 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - Jun 1 2010 |
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All Science Journal Classification (ASJC) codes
- Chemical Engineering (miscellaneous)
- Materials Science (miscellaneous)
- Environmental Science(all)
- Polymers and Plastics
Cite this
Relationship between swelling ratio and structure of three dimensional acrylic polymers in gel electrolytes. / Iwayasu, Norio; Nishimura, Shin.
In: KOBUNSHI RONBUNSHU, Vol. 67, No. 6, 01.06.2010, p. 350-355.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Relationship between swelling ratio and structure of three dimensional acrylic polymers in gel electrolytes
AU - Iwayasu, Norio
AU - Nishimura, Shin
PY - 2010/6/1
Y1 - 2010/6/1
N2 - The safety of lithium ion batteries can be improved by using ion conductive gels as electrolyte. For this purpose, gel electrolytes are required to exhibit high ionic conductivity and paired with a low temperature dependence. In this study, several matrix polymers for gel electrolytes with different degrees of polymerization between crosslinks and side chains were prepared. Their swelling ratio and ionic conductivity were measured. The matrix polymer which was made from ethylene glycol dimethacrylate as multifunctional monomer and vinyl acetate as monofunctional monomer showed a high swelling ratio. Ionic conductivity of the gel electrolyte was 4.9 mS/cm at 20°C and its activation energy was 14.3 kJ/mol. Our results suggest that the use of block copolymerization type monomers that show a weak interaction between polymers and lithium ions are effective.
AB - The safety of lithium ion batteries can be improved by using ion conductive gels as electrolyte. For this purpose, gel electrolytes are required to exhibit high ionic conductivity and paired with a low temperature dependence. In this study, several matrix polymers for gel electrolytes with different degrees of polymerization between crosslinks and side chains were prepared. Their swelling ratio and ionic conductivity were measured. The matrix polymer which was made from ethylene glycol dimethacrylate as multifunctional monomer and vinyl acetate as monofunctional monomer showed a high swelling ratio. Ionic conductivity of the gel electrolyte was 4.9 mS/cm at 20°C and its activation energy was 14.3 kJ/mol. Our results suggest that the use of block copolymerization type monomers that show a weak interaction between polymers and lithium ions are effective.
UR - http://www.scopus.com/inward/record.url?scp=77954675746&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=77954675746&partnerID=8YFLogxK
U2 - 10.1295/koron.67.350
DO - 10.1295/koron.67.350
M3 - Article
AN - SCOPUS:77954675746
VL - 67
SP - 350
EP - 355
JO - Kobunshi Ronbunshu
JF - Kobunshi Ronbunshu
SN - 0386-2186
IS - 6
ER -