Polymer Electrolyte Based on Poly(ethylene imine) and Lithium Salts.

Abstract

The dissolution of lithium salts in linear poly(ethylene imine) has been investigated because of its possible role as a solid electrolyte in lithium batteries. Lithium salts included in the study are LiF, LiCl, LiBr, LiI, LiSCN, LiCl104 and LiBF4. When cast from solution in a common solvent, a uniform mixture is obtained (expect for the case of LiF). Interaction of the salt and polymer can be characterized by observing a loss in crystallinity of the polymer and an increase in the glass transition temperature. At concentrations of salt below 10 mole percent, the polymer can slowly recrystallize at room temperature but at higher concentrations, the mixture remains amorphous for an indefinite period of time. DC conductivity at room temperature is about .0000001 S/cm but increases to .001 S/cm at 150 C. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1985
Accession Number
ADA160381

Entities

People

  • C. A. Harding
  • C. K. Chiang
  • G. T. Davis
  • T. Takahashi

Organizations

  • National Institute of Standards and Technology

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Alkenes
  • Chemical Engineering
  • Chemical Synthesis
  • Chemistry
  • Energy
  • Engineering
  • Glass Transition Temperature
  • Heat Energy
  • Jet Propulsion
  • Materials
  • Materials Science
  • Mechanical Engineering
  • Melting Point
  • Military Research
  • New York
  • Rhode Island
  • Transition Temperature

Fields of Study

  • Materials science

Readers

  • Electrochemical Engineering/ Fuel Cell Technologies