LiF-CaH2 alumina electrolytes for intermediate temperature fuel cell applications

Hydrofluoride-based electrolytes with proton conduction have been successfu lly used in intermediate: temperature fuel cell applications. Among the var ious hydrofluoride electrolytes, LiF-CaH2 and its composite with Al2O3, i.e ., LiF-CaH2-Al2O3, are the most promising candidates which show more advant ages than the other hydrofluorides. In this communication, we put our empha sis on the LiF-CaH2-Al2O3 electrolytes and their applications for intermedi ate temperature fuel cells. Furthermore, new fuel cell processes from hydri de ions, H-, and the electrochemical behaviour of LiF-CaH2-Al2O3 electrolyt es and fuel cells are discussed in more detail. (C) 2000 Elsevier Science S .A. All rights reserved.