Accession Number : ADA323366

Title :   Voltage and Current Transients in Lithium Thionyl Chloride Cells Accompanying Interrupted Electrolyte Additions.

Descriptive Note : Technical rept.,

Corporate Author : AEROSPACE CORP EL SEGUNDO CA TECHNOLOGY OPERATIONS

Personal Author(s) : Thaller, L. H. ; Quinzio, M. V.

PDF Url : ADA323366

Report Date : 15 DEC 1996

Pagination or Media Count : 26

Abstract : An investigation was carried out in an attempt to explain the out-of-family voltage trace associated with one of the 250 A-h lithium thionyl chloride cells used in batteries for selected Centaur missions. The voltage trace was generated during the manufacturing step where electrolyte is added to the cell. The investigation was carried out in several steps. First, discussions were held with the manufacturer, who was able to suggest theories that were consistent with the observations that were available for review. These theories were later tested in the electrochemical laboratories of The Aerospace Corporation. Using specially constructed cells equipped with reference electrodes, we measured the individual contributions of the anode, cathode, and cell container to the overall voltage transients associated with an interrupted cell filling process. These results validated some of the manufacturer's theories. What had been suggested as a minor contributor to the voltage traces was found by experimentation to be the most important one. That was the contribution of the porous carbon electrode. Our experiments added further support to the earlier conclusion that the out-of-family voltage signature seen in cell #474 was not indicative of a problem within the cell.

Descriptors :   *ELECTROCHEMISTRY, *VOLTAGE, *BATTERY CHARGERS, *LITHIUM BATTERIES, *THIONYL CHLORIDE, TRANSIENTS, MANUFACTURING, ELECTROLYTES, POROUS MATERIALS.

Subject Categories : Electrochemical Energy Storage
      Industrial Chemistry and Chemical Processing

Distribution Statement : APPROVED FOR PUBLIC RELEASE