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Title: Lithium: Thionyl chloride battery state-of-the-art assessment

Lithium: Thionyl chloride battery state-of-the-art assessment Models of the performance of primary Li/SOCl{sub 2} cells can provide for realistic comparisons between technical information from different sources, and set standards that electronic circuit designers may refer to in the generation of high-quality products. Data from various investigators were used to derive mathematical- statistical relationships with physical design features (e.g. size and materials), operating parameters (e.g. current and temperature) and storage conditions (time and temperature). These efforts were substantially promoted by normalization procedures. For example, current loads were converted into current densities, or if appropriate, into current per unit cathode volume. Similarly, cell capacities were standardized with the maximum values observed at low current and also with respect to the cathode volume. Particular emphasis was placed on evaluations of voltage-delay, cell capacity and self-discharge, for which several equations were established. In spite of a considerable expenditure in time to find high-quality datasets, the reality is that all of the reviewed studies are flawed in one way or another. Specifically, all datasets are afflicted with sizable experimental errors and the precision of the regression equations is much lower than is deemed necessary for a universal model of the lithium thionyl chloride cell. Each of the equations has some definite more » truth content, but is generally incapable of bridging the gap between different studies. The basic failure to come up with a unifying model for Li/SOCl{sub 2} batteries leaves only one benefit of the present analysis, namely to provide guidance for future investigations. Several recommendations are made based on the insight gained during the search for good data in the relevant literature. « less
Authors:
Publication Date:
OSTI Identifier:221912
Report Number(s):SAND--96-0839
ON: DE96009202
DOE Contract Number:AC04-94AL85000
Resource Type:Technical Report
Data Type:
Resource Relation:Other Information: PBD: Mar 1996
Research Org:Sandia National Labs., Albuquerque, NM (United States)
Sponsoring Org:USDOE, Washington, DC (United States)
Country of Publication:United States
Language:English
Subject: 25 ENERGY STORAGE; 40 CHEMISTRY; LITHIUM-CHLORINE BATTERIES; MATHEMATICAL MODELS; THIONYL CHLORIDES; LITHIUM-SULFUR BATTERIES; NONLINEAR PROBLEMS; PASSIVATION; ELECTROCHEMISTRY