Journal
APPLIED CATALYSIS B-ENVIRONMENTAL
Volume 267, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.apcatb.2020.118724
Keywords
Hybrid catalyst; Ethanol; Methane; Hydrogen; Biogas
Funding
- International Collaborative Energy Technology R&D Program of the Korea Institute of Energy Technology Evaluation and Planning (KETEP)
- Ministry of Trade, Industry & Energy, Republic of Korea [20158520000210]
- Korea Evaluation Institute of Industrial Technology (KEIT) [20158520000210] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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A novel and unique PtSc0.5Ni/MoS2@graphene catalyst possessing hybrid characteristics is prepared. Initially, three-dimensional nanoflower-like structures of MoS2 are deposited onto graphene sheets, and then PtScNi nanoparticles are grafted onto the MoS2@graphene support. For optimization, catalysts with different doping ratios (x = 0.2, 0.5, and 1.0) of Sc are prepared and examined. The electrochemical performances of PtNi/ MoS2@graphene, Pt@graphene, and commercial Pt/C catalysts are further evaluated for comparison. A single cell with the PtSc0.5Ni/MoS2@graphene catalyst exhibits a maximum power density of 51.70 mW cm(-2) at 50 degrees C in ethanol fuel, which is higher than previously reported values. The cell with commercial Pt/C catalyst, in contrast, displays a power density similar to 3.7 times lower. Furthermore, the PtSc0.5Ni/MoS2 @graphene catalyzed single cell delivers promising power densities and stabilities in methane and synthetic biogas fuel containing CH4, CO2, and H2S.
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