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The design of high-performance electrocatalysts for the electrooxidation of liquid fuel is highly desirable for the commercial development of fuel cells. Engineering the nanocatalysts with high surface active areas has been regarded as one of the most efficient approach to obtain the high-performance electrocatalysts. For this reason, we herein demonstrated a facile ultrasonic-assisted synthetic method to successfully fabricate the trimetallic PtAuRu nanostructures with highly porous features and perpendicular pore channels. By virtue of the highly porous properties and abundant pore channels, the resulted PtAuRu nanocrystals (PtAuRu NCs) with the optimized atomic ratio exhibit extremely high electrocatalytic performances toward formic acid oxidation with the mass and specific activities of 1044.1 mA mg −1 and 14.5 mA cm −2 , 4.1 and 2.2 times higher than those of commercial Pt/C, respectively. Our tremendous efforts in this work can not only provide a facile strategy for the preparation of excellent electrocatalysts but also greatly accelerate the commercial development of fuel cells and beyond. [ABSTRACT FROM AUTHOR]

This work reports a simple method to design and synthesize PdNi nanospheres which supported on Vulcan XC-72R Carbon with NaBH 4 as reducing agent at ambient temperature and their superior electrocatalytic activity. The results of electrochemical measurements indicate that the PdNi nanospheres exhibit improved catalytic activity, excellent durability as well as higher long-term stability towards methanol oxidation reaction in comparison with commercial Pd/C catalysts. Furthermore, it is interpreted that the enhanced catalytic performance of the PdNi nanospheres is owing to the electronic effect between Pd and Ni and the spherical shape structure with rough surface. These findings highlighted the significance of precisely synthesizing the Pd/Ni nanospheres supported on Vulcan XC-72R Carbon and their emerging applications as electrocatalysts for direct methanol fuel cells. [ABSTRACT FROM AUTHOR]

In this work, PdPbPt interconnected network type nanoparticles have been fabricated by a facile route, and the as-prepared PdPbPt composites were characterized by transmission electron microscopy (TEM), high-resolution TEM (HRTEM), energy dispersive X-ray spectroscopy (EDX), X-ray photoelectron spectroscopy (XPS) and electrochemical measurements. It is found that PVP plays an important role in enhancing the dispersion and stability of the catalyst. Moreover, the resultant network Pd 1 Pb 1 Pt 0.027 nanoparticles reveal superior electrocatalytic activity and stability for the ethanol electro-oxidation reaction for comparison with other as-synthesized catalysts, which the anodic peak current density on Pd 1 Pb 1 Pt 0.027 electrode can reach as high as 6936 mA mg −1 , suggesting that Pd 1 Pb 1 Pt 0.027 composite can be a promising catalyst for fuel cells. [ABSTRACT FROM AUTHOR]