Structural effects on the oxygen reduction reaction on the high index planes of Pt3Co

Literature Information

Publication Date 2014-03-31
DOI 10.1039/C4CP00243A
Impact Factor 3.676
Authors

Yuki Takesue, Masashi Nakamura, Nagahiro Hoshi


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Abstract

The oxygen reduction reaction (ORR) has been studied on the n(111)–(111) and n(111)–(100) series of Pt3Co using a hanging meniscus rotating disk electrode (HMRDE) in 0.1 M HClO4 (n is the number of terrace atomic rows). The activity for the ORR on the n(111)–(111) series, which is estimated by the specific activity at 0.90 V (RHE) jk, increases linearly with an increase in the step atom density dS. On the other hand, the activity for the ORR on the n(111)–(100) series increases linearly with an increase of dS on the surfaces with n ≥ 9. On the surfaces with n < 9, however, the activity for the ORR decreases with an increase of dS. We find a correlation between the ORR activity and θOH at the step on the assumption that all the oxide species are Pt–OH.

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Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics
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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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