Re-evaluation of the eutectic region of the LiBr-KBr-LiF system

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Description

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 ... continued below

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8 p.

Creation Information

Redey, L. & Guidotti, R.A. May 1, 1996.

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This report is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. It has been viewed 67 times . More information about this report can be viewed below.

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  • Redey, L. Argonne National Lab., IL (United States)
  • Guidotti, R.A. Sandia National Labs., Albuquerque, NM (United States)

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Description

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.

Physical Description

8 p.

Notes

OSTI as DE96010859

Source

  • 37. power sources conference, Cherry Hill, NJ (United States), 17-20 Jun 1996

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  • Other: DE96010859
  • Report No.: SAND--96-0979C
  • Report No.: CONF-9606161--5
  • Grant Number: AC04-94AL85000
  • DOI: 10.2172/238472 | External Link
  • Office of Scientific & Technical Information Report Number: 238472
  • Archival Resource Key: ark:/67531/metadc669028

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Creation Date

  • May 1, 1996

Added to The UNT Digital Library

  • June 29, 2015, 9:42 p.m.

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  • Jan. 15, 2016, 12:28 p.m.

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Redey, L. & Guidotti, R.A. Re-evaluation of the eutectic region of the LiBr-KBr-LiF system, report, May 1, 1996; Illinois. (digital.library.unt.edu/ark:/67531/metadc669028/: accessed August 17, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.