期刊
CARBON ENERGY
卷 3, 期 4, 页码 654-665出版社
WILEY
DOI: 10.1002/cey2.109
关键词
carbon black; electrocatalyst support; fuel cell cathodes; surface properties
In this paper, an in-depth study was conducted on carbon blacks with similar surface area but different surface chemistry, and Pt/CB electrocatalysts were successfully prepared. The results obtained help establish a relationship between surface chemistry and electrochemical properties, providing guidance for designing high-performance and stable Pt/C catalyst layers.
In this paper, an extensive characterisation of a range of carbon blacks (CB) with similar surface area but different surface chemistry is carried out by flow calorimetry, Raman spectroscopy, dynamic water vapour sorption, instrumental gas analysis, nitrogen adsorption/desorption and high potential chronoamperometry. Using these carbon materials as supports, Pt/CB electrocatalysts are prepared by microwave-assisted polyol-mediated synthesis in gram scale. Structural, morphological and electrochemical properties of the prepared electrocatalysts are evaluated by X-ray diffraction, transmission electron microscopy, rotating disc electrode and in situ fuel cell characterisation of the corresponding membrane-electrode assemblies. The obtained results allow to establish a relationship between surface chemistry and electrochemical properties useful for the design of Pt/C catalyst layers with high performance and stability.
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