한국표면공학회지 (52권3호 150-155)
Synergistic Effect of the MnO Catalyst and Porous Carbon Matrix for High Energy Density Vanadium Redox Flow Battery
고에너지 밀도 바나듐 레독스 흐름 전지를 위한 망간산화물 촉매와 다공성 탄소 기재의 시너지 효과
Kim, Minsung;Ko, Minseong;
Department of Metallurgical Engineering, Pukyong National University;
The carbon electrode was modified through manganese-catalyzed hydrogenation method for high energy density vanadium redox flow battery (VRFB). During the catalytic hydrogenation, the manganese oxide deposited at the surface of the carbon electrode stimulated the conversion reaction from carbon to methane gas. This reaction causes the penetration of the manganese and excavates a number of cavities at electrode surface, which increases the electrochemical activity by inducing additional electrochemically active site. The formation of the porous surface was confirmed by the scanning electron microscopy (SEM) images. Finally, the electrochemical performance test of the electrode with the porous surface showed lower polarization and high reversibility in the cathodic reaction compared to the conventional electrode.
Vanadium Redox Flow Battery;Carbon Electrode;Manganese oxide;Porous surface;