| 초록 |
Formic acid (FA, HCOOH) has been regarded as a promising hydrogen storage material (53 g/L) because of its mild reaction conditions upon dehydrogenation. Its conjugate base, formate salt (FS, MHCO2, M = Na, K, NH4), receives less attention as a hydrogen storage material (28 g/L) due to its low hydrogen storage capacity and reactivity. However, FS presents several advantages over FA for its low toxicity and thermodynamic adequacy for reversible hydrogen storage and release by coupling to a bicarbonate salt. In this presentation, physiochemical and thermodynamic properties of formate and bicarbonate cycle are presented to understand the storage and deliverable hydrogen capacity. In addition, catalytic performances upon dehydrogenation reactions of various FS depending on the reaction temperature and concentration are presented for fuel cell power applications. |
