Accession Number:

ADA343879

Title:

Advanced High Energy Lithium Polymer Electrolyte Battery

Descriptive Note:

Final rept. 14 Nov 97-14 May 98

Corporate Author:

ELTRON RESEARCH INC BOULDER CO

Personal Author(s):

• Spiegel, E. F.
• Adamic, K. J.
• Sammells, A. F.

Report Date:

1998-05-14

Pagination or Media Count:

25.0

Abstract:

This program was directed toward synthesis of two closely related classes of new lithium ion conducting polymer electrolytes which are demonstrating both higher ionic conductivity and improved elastomeric properties over current state-of-the-art polymer electrolytes. The strategy exploited the approach that carbonate oxygens, within the single phase carbonate-siloxane polymer matrix, will facilitate extensive ionic dissociation of introduced lithium salts, and that furthermore elastomeric behavior of the matrix under ambient temperature conditions will lead to enhanced mobility of lithium ions. The validity of this approach was verified during this program where preliminary data supports lithium ion conductivities 0001 per Scm at ambient temperature. Furthermore the elastomeric properties of these lithium ion conducting polymers will facilitate small inter-electrode distances to be achieved within portable secondary lithium batteries incorporating these new polymer electrolytes. These polymers were incorporated into lithium cells during this program.

Descriptors:

• *HIGH ENERGY
• *LITHIUM BATTERIES
• PORTABLE EQUIPMENT
• IONS
• CONDUCTIVITY
• INTERACTIONS
• SYNTHESIS
• POLYMERS
• ELASTOMERS
• STORAGE BATTERIES
• ELECTROLYTES
• LITHIUM COMPOUNDS

Subject Categories:

• Electrochemical Energy Storage

Distribution Statement:

APPROVED FOR PUBLIC RELEASE