LiF-CaH2 alumina electrolytes for intermediate temperature fuel cell applications

• Hydrofluoride-based electrolytes with proton conduction have been successfully used in intermediate: temperature fuel cell applications. Among the various hydrofluoride electrolytes, LiF-CaH2 and its composite with Al2O3, i.e., LiF-CaH2-Al2O3, are the most promising candidates which show more advantages than the other hydrofluorides. In this communication, we put our emphasis on the LiF-CaH2-Al2O3 electrolytes and their applications for intermediate temperature fuel cells. Furthermore, new fuel cell processes from hydride ions, H-, and the electrochemical behaviour of LiF-CaH2-Al2O3 electrolytes and fuel cells are discussed in more detail.

Nyckelord

fuel cells

proton conduction

hydrofluoride electrolytes

lithium fluoride

calcium hydride

aluminium oxide

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