2023
DOI: 10.1021/acsami.3c11248
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Investigating Degradation Mechanisms in PtCo Alloy Catalysts: The Role of Co Content and a Pt-Rich Shell Using Operando High-Energy Resolution Fluorescence Detection X-ray Absorption Spectroscopy

Yunfei Gao,
Neha Thakur,
Tomoki Uchiyama
et al.

Abstract: Low Pt-based alloy catalysts are regarded as an efficient strategy in achieving high activity for the oxygen reduction reaction (ORR) in proton-exchange membrane fuel cells (PEMFCs). However, the desired durability for the low Pt-based catalysts, such as the Pt 1 Co 3 catalyst, has still been considered a great challenge for PEMFCs. In this study, we investigate sub-2.5 nm Pt x Co y alloy catalysts with varying Co content and Pt 1 Co 3 @Pt core−shell (CS) nanostructure catalysts obtained through a simple displ… Show more

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