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Projects: Projects for Investigator
Reference Number GR/S76120/01
Title Ionic Conductivity in Crystalline Polymer Electrolytes
Status Completed
Energy Categories Other Power and Storage Technologies(Energy storage) 100%;
Research Types Basic and strategic applied research 100%
Science and Technology Fields PHYSICAL SCIENCES AND MATHEMATICS (Chemistry) 50%;
PHYSICAL SCIENCES AND MATHEMATICS (Physics) 50%;
UKERC Cross Cutting Characterisation Not Cross-cutting 100%
Principal Investigator Professor P Bruce
No email address given
Chemistry
University of St Andrews
Award Type Standard
Funding Source EPSRC
Start Date 01 October 2004
End Date 31 May 2010
Duration 68 months
Total Grant Value £511,866
Industrial Sectors Electronics
Region Scotland
Programme Materials, Mechanical and Medical Eng, Physical Sciences
 
Investigators Principal Investigator Professor P Bruce , Chemistry, University of St Andrews (99.999%)
  Other Investigator Dr D Tunstall , Physics and Astronomy, University of St Andrews (0.001%)
Web Site
Objectives
Abstract There is a great deal of interest in polymer electrolytes because they hold the key to realising truly all-solid-state rechargeable lithium batteries for applications in consumer electronics, medical devices and hybrid electric vehicles. The level of conductivity achieved by amorphous polymer electrolytes has proved insufficient. Crystalline polymer electrolytes represent an exciting new direction which may yield levels of conductivity sufficient for applications. The present proposal will laya foundation of fundamental understanding concerning these materials. Such a foundation is essential if the full potential of crystalline polymer electrolytes is to be developed. For 25 years ionic conductivity in polymer electrolytes was considered to occur only in amorphous polymers above the glass transition temperature Tg, crystalline polymer electrolytes were believed to be insulators. We have helped to overturned this conventional view and have demonstrated that the crystalline polymerelectrolytes, poly(ethylene oxide)6:LD(F6, where X = P, As, Sb not only conduct but do so better than the analogous amorphous phases! This is an interesting breakthrough which defines a new direction in polymer electrolyte research. The aim of the present application is to develop a fundamental understanding of crystalline polymer electrolytes. In particular we seek to understand how ions move in these materials, especially the role of chain ends within the crystal structure, to investigate the role of doping in order to enhance ion conductivity and to study the interface formed between crystalline polymer electrolytes and electrodes typically used in lithium batteries
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Added to Database 01/01/07