Evaluation of ceramic papers and tapes for use as separators in thermal batteries.

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Ceramic tapes and papers were evaluated for potential use as separators in high-temperature thermal batteries. The bulk of the tests involved fiberglass tape and borosilicate filter discs. Quartz (SiO{sub 2}) and zirconia (ZrO{sub 2}) materials were also examined to a limited extent. In addition, custom-prepared MgO-coated ceramic discs from Inventek Inc. were evaluated as separators. The tapes and paper discs were impregnated with LiCl-KCl eutectic or LiCl-LiBr-LiF electrolytes using three different techniques. Test discs were punched from the tapes and papers, impregnated with electrolyte and evaluated as separators in Li(Si)/FeS{sub 2} single cells at 400 or 500 C at a ... continued below

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51 p.

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Reinhardt, Frederick William & Guidotti, Ronald Armand June 1, 2006.

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Description

Ceramic tapes and papers were evaluated for potential use as separators in high-temperature thermal batteries. The bulk of the tests involved fiberglass tape and borosilicate filter discs. Quartz (SiO{sub 2}) and zirconia (ZrO{sub 2}) materials were also examined to a limited extent. In addition, custom-prepared MgO-coated ceramic discs from Inventek Inc. were evaluated as separators. The tapes and paper discs were impregnated with LiCl-KCl eutectic or LiCl-LiBr-LiF electrolytes using three different techniques. Test discs were punched from the tapes and papers, impregnated with electrolyte and evaluated as separators in Li(Si)/FeS{sub 2} single cells at 400 or 500 C at a steady-state current of 63 or 125 mA/cm{sup 2}. The performance of single cells containing these discs generally improved with increased electrolyte loading for most of the materials in the case of the LiCl-KCl eutectic. Better results were obtained with the paper filter discs than with the tapes. The best results with the paper discs were obtained with Whatman GF/A filter discs. Active lives for cells with these separators were about 85% of standard cells with pressed-powder separators. Good results were obtained in one battery test with the eutectic electrolyte. Mixed results were obtained with the LiCl-LiBr-LiF electrolyte under similar conditions. Higher loadings of electrolyte did not always translate into improved cell performance. Self-discharge reactions are believed responsible. The best overall results were obtained with the Inventek separators. Based on the results of this study, more work in this technology area is merited.

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51 p.

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  • Report No.: SAND2006-2244
  • Grant Number: AC04-94AL85000
  • DOI: 10.2172/890606 | External Link
  • Office of Scientific & Technical Information Report Number: 890606
  • Archival Resource Key: ark:/67531/metadc883848

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  • June 1, 2006

Added to The UNT Digital Library

  • Sept. 21, 2016, 2:29 a.m.

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  • Nov. 28, 2016, 1:35 p.m.

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Reinhardt, Frederick William & Guidotti, Ronald Armand. Evaluation of ceramic papers and tapes for use as separators in thermal batteries., report, June 1, 2006; United States. (digital.library.unt.edu/ark:/67531/metadc883848/: accessed August 17, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.