Accession Number : ADA195821

Title :   Morphological Changes in Polymer Electrolyte Cells.

Descriptive Note : Technical rept. 15 Jul 85-30 May 88,

Corporate Author : MINNESOTA UNIV MINNEAPOLIS CORROSION RESEARCH CENTER

Personal Author(s) : Munshi, M Z ; Owens, B B

PDF Url : ADA195821

Report Date : May 1988

Pagination or Media Count : 24

Abstract : Rechargeable solid state batteries utilizing lithium anodes, V6O13 composite cathodes and polymer electrolytes made from polyethylene oxide - LiCF3SO3 complex were investigated at 100 C. The cells exhibited good cycling and reversibility. Optical and scanning electron microscopy were used the morphological changes taking place at the electrodes and electrolyte as a function of cycle number. Post-mortem examination of the cell material indicated that the structures of lithium, electrolyte and cathode become finer grained and hence smoother. In addition the structures were more coherent. The cathode appeared to undergo a re-healing process during the early stage of cycling. The results indicate that the structures are consistent with one another and that long cycle life can be obtained with these types of cells. Keywords: Polymer electrolytes, Morphology, Lithium, Cells. (MJM)

Descriptors :   ANODES, CELLS, CYCLES, ELECTRIC BATTERIES, ELECTRODES, ELECTROLYTES, ELECTROLYTIC CELLS, ELECTRON MICROSCOPY, ELECTRONIC SCANNERS, LITHIUM, LONG LIFE, MATERIALS, MORPHOLOGY, OPTICAL ANALYSIS, OXIDES, POLYETHYLENE, POLYMERS, SOLID STATE ELECTRONICS, STORAGE BATTERIES, STRUCTURES

Subject Categories : Electrochemical Energy Storage

Distribution Statement : APPROVED FOR PUBLIC RELEASE