| 초록 |
In this symposium, advanced hybrid electrochemical power sources such as chemically regenerative redox fuel cells (CRRFCs) using liquid catalysts and a novel electrochemical cell with reduction reaction of NO to N2 will be introduced. First, we studied Fe2+/Fe3+ as a liquid catalyst with Fe-macrocycles as a co-catalyst in CRRFCs. The Fe2+-oxidation rate was enhanced in the presence of Fe-Phthanolocyanine. The single cell having the cathode supplied by the liquid catalyst with Fe-Pc showed a maximum power density of ~249 mW cm-2. In addition, we report complete reduction reaction of NO into N2 by oxidizing Fe2+ into Fe3+. To regenerate Fe2+ as a NO absorbent from Fe3+, the H2/Fe3+ fuel cell supplied by Fe3+-containing solution at cathode is utilized producing maximum power density of 110 mW cm-2 at 70 oC. |
