Special Issue "Recent Advances of Electrocatalysis in Fuel Cells"
A special issue of Catalysts (ISSN 2073-4344).
Deadline for manuscript submissions: 30 June 2018
Dr. Kotaro Sasaki
Fuel cells are widely considered as a potentially highly-efficient and clean energy systems. Regardless of the considerable advances in recent years, technical and economic barriers still exist in developing electrocatalysts, which play an essential role in fuel cell operations. The slow kinetics of the oxygen reduction reaction (ORR) at the proton-exchange membrane fuel cell (PEMFC) cathodes, even on the best Pt catalysts, causes a significant loss in cell voltage, thereby lowering the efficiency of energy conversion in the system. As a result, high Pt loading is required in cathode electrocatalysts. Durability is also critical for fuel-cell cathodes because of the very harsh conditions under which they operate, viz., low pH, dissolved molecular oxygen, and high positive potentials. On the other hand, liquid fuels, especially methanol and ethanol, are considered as potential alternatives to hydrogen fuel in PEMFCs due to their high-energy density and the ease of their storage and transportation. However, carbon monoxide (CO) poisoning also takes place during the methanol oxidation reaction (MOR). The tardiness of MOR at the anode is more prominent than that of ORR at the cathode, adversely affecting the performance of direct methanol oxidation fuel cells (DMFCs). Ethanol is a non-toxic renewable energy source that can be be produced from agricultural products; however, the commercialization of direct ethanol oxidation fuel cells (DEFCs) is considered more difficult than that of DMFCs, because the kinetics of ethanol oxidation reaction (EOR) are slower than those of MOR, even for the best available catalysts. Further development of more-efficient electrocatalysts for both cathodes and anodes is therefore necessary. This Special Issue aims to cover the most recent advances in fuel cell electrocatalysts to alleviate the current situations/drawbacks and to provide a better understanding in the development of high-performing fuel cells.Dr. Kotaro Sasaki
Manuscript Submission Information
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- Proton/anion exchange membrane fuel cells
- Direct alcohol fuel cells
- Low Pt-group-metal (PGM) electrocatalysts
- Non-PGM electrocatalysts
- Oxygen reduction reaction
- Methanol oxidation reaction
- Ethanol oxidation reaction
- Hydrogen oxidation reaction
- Core-shell structures
- Density function theory