Realizing efficient operations of Ni-cermet-based fuel cells on hydrocarbons via an in situ self-assembled metal/oxide nano-heterostructured catalyst
Journal Article
·
· Applied Catalysis. B, Environmental
- South China University of Technology (SCUT), Guangzhou (China)
- Brookhaven National Laboratory (BNL), Upton, NY (United States)
- National Yang Ming Chiao Tung University, Tainan (Taiwan)
Operating Ni-cermet-based fuel cells on hydrocarbons is charming by largely hindered by poor coking tolerance and severe deterioration. Here, in this study, we report an effective metal/oxide nano-heterostructured catalyst with a nominal composition of Pr0.95Ru0.05O2-δ (PRO), which is in situ self-assembled to a Pr0.95Ru0.05-xO2-δ oxide frame coated with Ru metallic nanoparticles (denoted as Ru/PRO) under the operation condition. When applied to the Ni-cermet (Ni-YSZ) anodes, the cells achieve decent peak power densities of 1.784 and 1.870 W cm-2 on CH4 and C3H8 with only 3% H2O at 750 °C, respectively. Moreover, the cells with Ru/PRO-coated anode demonstrate excellent durability when operated on CH4 for ~ 220 h and C3H8 for ~115 h. It is demonstrated that the Ru/PRO generates hydroxyl species that react with carbon species, followed by the formation of COH intermediates on Ni anode surfaces for removing the coking, as confirmed by experiments and computations.
- Research Organization:
- Brookhaven National Laboratory (BNL), Upton, NY (United States)
- Sponsoring Organization:
- Fundamental Research Funds for the Central Universities; National Natural Science Foundation of China (NSFC); National Science and Technology Council (NSTC); USDOE Office of Energy Efficiency and Renewable Energy (EERE), Office of Sustainable Transportation. Hydrogen Fuel Cell Technologies Office (HFTO); USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities (SUF)
- Grant/Contract Number:
- SC0012704
- OSTI ID:
- 2500290
- Report Number(s):
- BNL--226463-2025-JAAM
- Journal Information:
- Applied Catalysis. B, Environmental, Journal Name: Applied Catalysis. B, Environmental Vol. 355; ISSN 0926-3373
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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