Accession Number : ADA193985


Title :   Measurement of Li+ Ion Transport Numbers in PEO-LiX Complexes.


Descriptive Note : Technical rept. no. 16, 15 Jul 85-Jan 88,


Corporate Author : MINNESOTA UNIV MINNEAPOLIS CORROSION RESEARCH CENTER


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


Full Text : http://www.dtic.mil/dtic/tr/fulltext/u2/a193985.pdf


Report Date : Mar 1988


Pagination or Media Count : 17


Abstract : Lithium ion conducting polymer materials are being intensively investigated in a number of research laboratories because of their potential use as solid electrolytes in high energy density solid state lithium batteries. The most widely used polymer has been based on polyethylene oxide (PEO). The conduction mechanism in these polymer electrolytes has generally been assumed to be due to Li(+)ion transport from one lone pair site to another along the helical PEO strands. However, recent studies have shown that the Li(+) transport number is less than unity. The transport number for Li(+) ions in PEO-LiX complexes was measured using a potentiostatic polarization technique. The results indicate that the Li(+) ion transport is strongly influenced by the salt concentration and the type of counter ions.


Descriptors :   *ION EXCHANGE , *IONS , *LITHIUM , CONCENTRATION(CHEMISTRY) , CONDUCTIVITY , LABORATORIES , MATERIALS , NUMBERS , OXIDES , POLARIZATION , POLYETHYLENE , POLYMERS , POTENTIOSTATIC TECHNIQUES , RESEARCH FACILITIES , SALTS , SITES , SOLID ELECTROLYTES , STRANDS , TRANSPORT


Subject Categories : Inorganic Chemistry


Distribution Statement : APPROVED FOR PUBLIC RELEASE