Solvation of Cobalt Salts by Oligomeric Polyethers

Abstract

Polyether-salt systems involving CoBr2 dissolved in oligomeric polyethylene glycol (PEG) and polytetra-methylene glycol (PTMG) have been investigated. Both systems demonstrated conductivity maxima as a function of salt concentration. PTMG electrolytes had dramatically lower conductivities (max. sigma approx. 3.6 x 10 7 Scm for PTMG, max. sigma approx. 1.45 x 10-5 Scm for PEG at room temperature) which can be explained on the basis of spectral data which indicate the existence of predominantly neutral species in PTMG. The reason for the difference in the types of species present in PEG and PTMG can be rationalized on the basis of the chelate effect.

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Document Details

Document Type
Technical Report
Publication Date
Jun 12, 1992
Accession Number
ADA254815

Entities

People

  • G. C. Farrington
  • M. S. Mendolia

Organizations

  • University of Pennsylvania

Tags

DTIC Thesaurus Topics

  • Abstracts
  • Alkenes
  • Biomedical And Dental Materials
  • Chemical Compounds
  • Chemical Synthesis
  • Chemistry
  • Conductivity
  • Dielectric Polymers
  • Electrolytes
  • Materials
  • Materials Science
  • Metals
  • Polyethers
  • Polyethylene Glycols
  • Polyethylenes
  • Polymers
  • Solvation

Readers

  • Electrochemical Engineering/ Fuel Cell Technologies
  • Materials Science and Engineering.
  • Organic Chemistry