Effect of thermal cycling on CSPL (Chloride Silent Power Ltd. ) sodium/sulfur cells
The initial phase of a task being performed to improve the freeze/thaw (F/T) durability of CSPL cells has been completed. Extensive experimental testing along with preliminary thero-mechanical modeling results show that intrinsic F/T durability of the CSPL-PB cell design is excellent. Additionally, the therom-mechancial modeling claculations demonstrated that the PB design may be more tolerant to undesirable conditions than conventional, higher capacity cells with larger L/D ratios. However, the results following thermal cycling of the intial battery modules that were fabricated at CSPL were not as encouraging. F/T failure increased significantly over that observed in individual cell tests. This situation may have been caused by other factors ( e.g. cell production rate scale-up, poor temperature uniformity) and may not represent the inherent durability of the modules. Future activity includes characterizing cell performance in modules, completing the detailed evaluation of cell behavior, and refining the thero-mechanical model.
- Research Organization:
- Sandia National Labs., Albuquerque, NM (USA); Chloride Silent Power Ltd., Runcorn (UK)
- DOE Contract Number:
- AC04-76DP00789
- OSTI ID:
- 5015166
- Report Number(s):
- SAND-88-1322C; CONF-8806127-2; ON: DE88011205
- Country of Publication:
- United States
- Language:
- English
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