Achieving high-power PEM fuel cell performance with an ultralow-Pt-content core–shell catalyst
The high-power performance of proton exchange membrane fuel cells (PEMFC) decreases
as the Pt loading or Pt surface area decreases due to oxygen transport constraints. This has
limited the Pt reduction of a fuel cell below the current∼ 0.2 mgPt/cm2MEA. In this paper, the
performance of a Pt-monolayer core–shell catalyst (PtML/Pd/C) was studied with a particular
focus on high-current-density operation. Although conventional Pt/C electrodes with low Pt
loading showed a substantial voltage falloff at high current densities, PtML/Pd/C showed …
as the Pt loading or Pt surface area decreases due to oxygen transport constraints. This has
limited the Pt reduction of a fuel cell below the current∼ 0.2 mgPt/cm2MEA. In this paper, the
performance of a Pt-monolayer core–shell catalyst (PtML/Pd/C) was studied with a particular
focus on high-current-density operation. Although conventional Pt/C electrodes with low Pt
loading showed a substantial voltage falloff at high current densities, PtML/Pd/C showed …
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