Humidity dependence of the oxidation of carbon monoxide adsorbed on Pt/C and PtRu/C electrocatalysts
文献信息
Tsutomu Ioroi, Kazuaki Yasuda, Yoshinori Miyazaki
The oxidation of carbon monoxide adsorbed on a supported Pt (30 wt.% and 60 wt.% Pt/C) or PtRu (30 wt.% and 45 wt.% PtRu/C) gas diffusion electrode at various humidities and temperatures was investigated in an actual PEFC configuration. It is shown that the adsorbed CO-stripping potential on Pt/C and PtRu/C decreased with an increase in the humidity of the fuel until the dew point of the fuel reached the cell temperature. The CO-stripping potential of the 45 wt.% PtRu/C is lower and less sensitive to the humidity of the fuel than that of the 30 wt.% PtRu, which suggested that the PtRu/C with a higher catalyst density adsorbs water more strongly, even under lower humidity conditions.
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Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.











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