| Yazarlar |
Nitin Kaskhedikar
|
|
Jürgen Paulsdorf
|
|
Marina Burjanadze
|
Yunus KARATAŞ
Türkiye |
|
Dirk Wılmer
|
|
Bernhard Rolıng
|
|
Hans Dieter Wiemhöfer
|
| Özet |
| A polyphosphazene [NP(NHR)2]n with oligo[propylene oxide] side chains - R = -[CH(CH3)-CH2O] m-CH3 (m = 6 - 10) was synthesized by living cationic polymerisation and polymer-analogue substitution of chlorine from the intermediate precursor [NPCl2]n using the corresponding primary amine RNH2. The polymer had an average molecular weight of 3.3 × 105 D. Polymer electrolytes with different concentrations of dissolved lithium triflate (LiCF3SO3) were prepared. Mechanically stable polymer electrolyte membranes were formed using UV radiation induced crosslinking of the polymer salt mixture in the presence of benzophenone as photoinitiator. The glass transition temperature of the parent polymer was found to be - 75°C before cross linking. It increases after crosslinking and with increasing amounts of salt to a maximum of - 55°C for 20 wt.% LiCF3SO3. The ionic conductivity was determined by impedance spectroscopy in the temperature range 0-80°C. The highest conductivity was found for a salt concentration of 20 wt.% LiCF 3SO3: 6.5 × 10- 6 S•cm- 1 at 20°C and 2.8 × 10- 4 S cm- 1 at 80°C. The temperature dependence of the conductivities was well described by the MIGRATION concept. © 2006 Elsevier B.V. All rights reserved. |
| Anahtar Kelimeler |
| Ionic conductivity | Polymer electrolytes | Polyphosphazene |
| Makale Türü | Özgün Makale |
| Makale Alt Türü | SSCI, AHCI, SCI, SCI-Exp dergilerinde yayımlanan tam makale |
| Dergi Adı | Solid State Ionics |
| Dergi ISSN | 0167-2738 |
| Dergi Tarandığı Indeksler | SSCI |
| Makale Dili | İngilizce |
| Basım Tarihi | 03-2006 |
| Cilt No | 177 |
| Sayı | 7 |
| Sayfalar | 703 / 707 |
| Doi Numarası | 10.1016/j.ssi.2006.01.011 |
| Makale Linki | http://linkinghub.elsevier.com/retrieve/pii/S016727380600035X |
| Atıf Sayıları | |
| SCOPUS | 28 |
| Google Scholar | 35 |
