Re-evaluation of the eutectic region of the LiBr-KBr-LiF system
- Argonne National Lab., IL (United States)
- Sandia National Labs., Albuquerque, NM (United States)
The separator pellet in a thermal battery consists of electrolyte immobilized by a binder (typically, MgO powder). The melting point of the electrolyte determines the effective operating window for its use in a thermal battery. The development of a two-hour thermal battery required the use of a molten salt that had a lower melting point and larger liquidus range than the LiCl-KCl eutectic which melts at 352 C. Several candidate eutectic electrolyte systems were evaluated for their suitability for this application. One was the LiCl-LiBr-KBr eutectic used at Argonne National Laboratories for high-temperature rechargeable batteries for electric-vehicle applications. Using a custom-designed high-temperature conductivity cell, the authors were able to readily determine the liquidus region for the various compositions studied around the original eutectic for the LiBr-KBr-LiF system. The actual eutectic composition was found to be 60.0 m/o LiBr-37.5 m/o KBr-2.5 m/o LiF with a melting point of 324 {+-} 0.5 C.
- Research Organization:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC04-94AL85000
- OSTI ID:
- 238472
- Report Number(s):
- SAND-96-0979C; CONF-9606161-5; ON: DE96010859; TRN: AHC29612%%21
- Resource Relation:
- Conference: 37. power sources conference, Cherry Hill, NJ (United States), 17-20 Jun 1996; Other Information: PBD: [1996]
- Country of Publication:
- United States
- Language:
- English
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