Supramolecular order in new polymer electrolytes

✍ Scribed by Wright, Peter V.; Zheng, Y.; Bhatt, D.; Richardson, T.; Ungar, G.

• Publisher: John Wiley and Sons
• Year: 1998
• Tongue: English
• Weight: 326 KB
• Volume: 47
• Category: Article
• ISSN: 0959-8103
• DOI: 10.1002/(sici)1097-0126(199809)47:1<34::aid-pi2>3.0.co;2-g

✦ Synopsis

The structure and conductivity of crystalline, semicrystalline and amorphous complexes of poly(ethylene oxide) with sodium and lithium salts is brieÑy reviewed and the rationale for synthesizing low-dimensional, organized polyether complexes is discussed. New polymer electrolytes derived from : where R is a long alkyl side-chain (principally and n \ 5) forming wC 16 H 33 both two-component complexes with lithium salts and three-component systems incorporating RX, where R is a long alkyl chain or and X is wC 16 H 33 wC 12 H 25 wOH, and several ethers. Conductivities increase steeply with alkyl wC 2 H 5 , melting (33È43¡C) and at a transition occurring at 60È70¡C. Conductivities 10~3È10~2 S cm~1 over the range 60È100¡C are observed in the most highly organized systems. LangmuirÈBlodgett Ðlms of the complexes (20 molecular layers) are readily deposited. They show temperature-independence of conductivity over the range 10¡C to about 90¡C.