AI Article Synopsis
- Methanol oxidation is key for clean energy, especially in direct methanol fuel cells, but creating efficient and affordable catalysts for this process is a major hurdle.
- Researchers have developed a NiSn catalyst that shows excellent electrocatalytic activity and stability in acidic conditions, rivaling commercial Pt/C catalysts.
- This new catalyst, made from abundant metals Ni and Sn, is 1800 times cheaper than Pt/C and retains its performance even under challenging environments, supported by density functional theory modeling that explains its favorable reaction mechanisms.
Article Abstract
Methanol (CHOH) oxidation offers a promising avenue for transitioning to clean energy, particularly in the field of direct methanol fuel cells (DMFCs). However, the development of efficient and cost-effective catalysts for the methanol oxidation reaction (MOR) remains a critical challenge. Herein, we report the exceptional electrocatalytic activity and stability of NiSn toward MOR in acidic media, achieving a performance comparable to that of commercial Pt/C catalysts. Our catalyst design incorporates Earth-abundant Ni and Sn elements, resulting in a material that is 1800 times more cost-effective than Pt/C. Density functional theory (DFT) modeling substantiates our experimental findings, shedding light on the favorable reaction mechanisms and kinetics on the NiSn surface. Additionally, the as-synthesized NiSn electrocatalyst demonstrates commendable durability, maintaining its electrocatalytic activity even after prolonged exposure to harsh acidic conditions.
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