Accession Number:

ADA183838

Title:

The Overcharge and Overdischarge Behavior of Polymer Electrolyte Cells.

Descriptive Note:

Technical rept. no. 11, Sep 86-Aug 87,

Corporate Author:

MINNESOTA UNIV MINNEAPOLIS CORROSION RESEARCH CENTER

Personal Author(s):

• Gopaliengar,R.
• Munshi,M. Z.
• Owens,Boone B.

Report Date:

1987-07-01

Pagination or Media Count:

4.0

Abstract:

The overcharge and overdischarge behavior of the cell LiPEO8 LiCF3SO3V6O13 is being investigated with particular emphasis on the changes taking place at the cathode. Cells placed on overcharge have shown an inability to discharge. Optical microscopy has revealed severe electrolyte and cathode degradation with the presence of white fluffy deposits located at the cathode-electrolyte interface. This was shown by EDAX analysis to be predominantly rich in salt. Vanadium was also detected at the Li-electrolyte interface.

Descriptors:

• *ELECTROLYTES
• *POLYMERS
• BEHAVIOR
• CELLS
• ELECTROLYTIC CELLS
• CATHODES
• DEGRADATION
• MICROSCOPY
• OPTICAL ANALYSIS
• VANADIUM

Subject Categories:

• Polymer Chemistry
• Electrochemical Energy Storage

Distribution Statement:

APPROVED FOR PUBLIC RELEASE