Preparation of metallic cation conducting polymers based on sterically hindered phenols containing polymeric systems

Patent · Sat Dec 31 23:00:00 EST 1988

OSTI ID:867187

Skotheim, Terje A ^[1]; Okamoto, Yoshiyuki ^[2]; Lee, Hung S ^[3]

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1. Shoreham, NY
2. Fort Lee, NJ
3. Woodside, NY

The present invention relates to ion-conducting solvent-free polymeric systems characterized as being cationic single ion conductors. The solvent-free polymer electrolytes comprise a flexible polymer backbone to which is attached a metal salt, such as a lithium, sodium or potassium salt, of a sterically hindered phenol. The solid polymer electrolyte may be prepared either by (1) attaching the hindered phenol directly to a flexible polymeric backbone, followed by neutralization of the phenolic OH's or (2) reacting the hindered phenol with a polymer precursor which is then polymerized to form a flexible polymer having phenolic OH's which are subsequently neutralized. Preferably the hindered phenol-modified polymeric backbone contains a polyether segment. The ionic conductivity of these solvent-free polymer electrolytes has been measured to be in the range of 10.sup.-4 to 10.sup.-7 S cm.sup.-1 at room temperature.

• Research Organization: ASSOC UNIVERSITIES INC
• DOE Contract Number: AC02-76CH00016
• Assignee: Polytechnic University (Brooklyn, NY); Associated Universities, Inc. (Washington, DC)
• Patent Number(s): US 4882243
• OSTI ID: 867187
• Country of Publication: United States
• Language: English

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