2015-Sustainable Industrial Processing Summit
SIPS 2015 Volume 7: Ionic Liquids & Energy Production
| Editors: | Kongoli F, Gaune-Escard M, Mauntz M, Rubinstein J, Dodds H.L. |
| Publisher: | Flogen Star OUTREACH |
| Publication Year: | 2015 |
| Pages: | 310 pages |
| ISBN: | 978-1-987820-30-0 |
| ISSN: | 2291-1227 (Metals and Materials Processing in a Clean Environment Series) |
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Electrochemical Properties of Lithium Hydride in Molten Chlorides
Patrick Masset1;1FRAUNHOFER UMSICHT, Sulzbach-Rosenberg, Germany (Deutschland);
Type of Paper: Plenary
Id Paper: 250
Topic: 13
Abstract:
Lithium hydride (LiH) is an attractive material for some industrial applications (electrical energy production, hydrogen storage, metallic hydride formation in molten salts) due to its highly reducing character and its low molecular weight. However, lithium hydride is very sensitive to oxygen and moisture, which complicates its use in industrial processes and should be handled under protected atmosphere. In this work, the electrochemical properties of lithium hydride (LiH) in the LiCl-KCl molten eutectic were investigated at 425 °C using classical transient electrochemical techniques. The H2/H- redox system (n=1) was found reversible even if the produced hydrogen at the electrode escapes and does allow to reduce it partially only. The diffusion coefficient of hydride anions was found to be close to 2-3.10-5 cmAČ.s-1, whereas the apparent standard potential was determined to be close to 1.825 V vs. Ag/AgCl at 425 °C.