Accession Number : ADA331288

Title :   Testing Lithium/Carbon Monofluoride Batteries for Naval Applications

Descriptive Note : Final rept. Jun 92-Feb 94

Corporate Author : ADVANCED TECHNOLOGY AND RESEARCH CORP BURTONSVILLE MD

Personal Author(s) : Zoski, Glenn

PDF Url : ADA331288

Report Date : MAR 1996

Pagination or Media Count : 29

Abstract : This investigation was part of a continuing effort to identify or develop battery technology having higher voltage, good rate capability, improved safety, cost effectiveness and easy disposal. Perceived safety risks and storage problems have limited use of lithium batteries by the Navy. This study evaluated the performance of Panasonic Model BR-C lithium/carbon monofluoride batteries over a wide temperature range. Battery rate limitation and the discharge mechanism were also investigated. Four sets of batteries, three batteries per set, were discharged at temperatures of -20, 0, 25 and 70 deg C respectively. The batteries were discharged under constant load conditions of 5 and 50 ohms. Environmental chambers were used to maintain temperature control. Performance at room temperature and above was quite good and the reproducibility of the battery discharge behavior was excellent. Low temperature performance was poor, especially at the higher discharge rate. An unexplained temperature excursion occurred on batteries discharged at -20 deg C, raising a potential safety concern. A better understanding of the discharge mechanism requires collection of impedance data throughout the discharge process. The effects of the spirally-wound construction could be accounted for if a prismatic version of the LiCFx battery were constructed and used for the impedance measurements.

Descriptors :   *LITHIUM BATTERIES, COST EFFECTIVENESS, SAFETY, TEMPERATURE CONTROL, FLUORIDES, ELECTRIC BATTERIES.

Subject Categories : Electrochemical Energy Storage
      Test Facilities, Equipment and Methods

Distribution Statement : APPROVED FOR PUBLIC RELEASE