Accession Number:

ADA399050

Title:

Ionically Conducting Polymer Electrolytes

Descriptive Note:

Final rept. 25 Jun 1993-30 Jun 2001

Corporate Author:

DAYTON UNIV OH RESEARCH INST

Personal Author(s):

• Kumar, Bindo

Report Date:

2001-06-01

Pagination or Media Count:

72.0

Abstract:

This report presents an investigation on the development of composite electrolytes for lithium batteries. The investigation covers a diverse range of composite electrolyte compositions and reveals that the incorporation of a ceramic component in a polymer matrix leads to enhanced conductivity. The conductivity enhancement depends upon the weight fraction of the ceramic phase, annealing parameters, nature of polymer-ceramic system, and temperature. The roles of ceramic additives are to depress the polyethylene oxide PEO melting temperature and retard kinetics of its crystallization. A resistivity relaxation or conductivity enhancement below the melting temperature of PEO occurs, which appears to be a characteristic of these electrolytes and related to an interaction of dipoles associated with polymer chain and ceramic particles.

Descriptors:

• *POLYMERS
• *CERAMIC MATERIALS
• *DIPOLES
• *LITHIUM BATTERIES
• *ELECTROLYTES
• ANNEALING
• OPTIMIZATION
• CONDUCTIVITY
• INTERACTIONS
• PARAMETERS
• COMPOSITE MATERIALS
• RESISTANCE
• MATRIX MATERIALS
• CRYSTALLIZATION
• PARTICLES
• CHAINS
• ADDITIVES
• RELAXATION
• COMPOSITION(PROPERTY)
• MELTING POINT
• POLYETHYLENE
• ETHYLENE OXIDE

Subject Categories:

• Polymer Chemistry
• Electrochemical Energy Storage

Distribution Statement:

APPROVED FOR PUBLIC RELEASE