Accession Number : ADA258332


Title :   The Effect of Low Molecular Weight Additives on the Properties of Poly(ethylene oxide)-Based Zn(II) and Li(I) Electrolytes


Descriptive Note : Technical rept. 31 May 1991-30 Jun 1992


Corporate Author : PENNSYLVANIA UNIV PHILADELPHIA DEPT OF CHEMISTRY


Personal Author(s) : Yang, H ; Yang, L L ; Farrington, G C


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a258332.pdf


Report Date : 12 Jun 1992


Pagination or Media Count : 22


Abstract : The incorporation of low molecular weight additives significantly improves the conductivity of both PEO-based ZnBr2 and LiClO4 electrolytes from 0 to 100 deg C, particularly at room temperature and below. Apparently additives have two effects: (1) to increase the segmental mobility of the PEO chains in the amorphous conducting phase, and therefore, increase the mobility of charge carriers; and (2) to increase the degree of salt dissociation in the amorphous conducting phase and thus increase the number of charge carriers. The effectiveness of additives in improving conductivity is greatly influenced by the type of salts involved.


Descriptors :   *POLYMERS , *LITHIUM , *ADDITIVES , *ZINC , *ELECTROLYTES , *ETHYLENE OXIDE , TEMPERATURE , MOBILITY , CHARGE CARRIERS , NUMBERS , CHLORINE COMPOUNDS , DISSOCIATION , SALTS , CHAINS , LOW LEVEL , ROOM TEMPERATURE , PHASE , MOLECULAR WEIGHT , CONDUCTIVITY


Subject Categories : Physical Chemistry
      Polymer Chemistry
      Electricity and Magnetism


Distribution Statement : APPROVED FOR PUBLIC RELEASE