| 초록 |
Platinum group metal (PGM) as a cathodic catalyst for proton exchange membrane water electrolysis system shows high performance for hydrogen production without any pollutant. However, the drawbacks of PGM limit the commercial use of the catalysts to the water electrolysis system. To solve the problems, catalyst design has been investigated to minimize the PGM loading by preparing the core-shell structure with abundant core metal, and alloying with transition metals or non-metals. In this work, Rh-P catalysts were electrodeposited on carbon paper varying the deposition conditions. In particular, the pulse electrodeposition with variable conditions can controll the catalyst properties which enhence the catalytic activity. In the acidic medium, hydrogen evolving activity of the dendritic Rh-P catalyst shows higher value than that of pure Rh catalyst. In addition, introduction of P to Rh catalyst was accelerating the intrinsic activity for hydrogen evolution reaction. |
