Nanomaterials for Fuel Cell Catalysis by Kenneth I. Ozoemena, Shaowei Chen

By Kenneth I. Ozoemena, Shaowei Chen

Global specialists supply an authoritative resource of knowledge at the use of electrochemical gasoline cells, and particularly talk about using nanomaterials to augment the functionality of current strength structures. The publication covers the cutting-edge within the layout, instruction, and engineering of nanoscale practical fabrics as potent catalysts for gas mobile chemistry, highlights contemporary growth in electrocatalysis at either gasoline telephone anode and cathode, and info views and demanding situations in destiny research.

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Extra resources for Nanomaterials for Fuel Cell Catalysis

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These are remaining questions that should be 2 Recent Advances in the Use of Shape-Controlled Metal Nanoparticles. . 37 addressed in the forthcoming years and that would allow a comparison of samples prepared with different methodologies to be properly performed. 2 Surface Cleaning Methodologies As previously stated, surface cleanness is a critical requirement. If the surface of the nanoparticles is contaminated, it is not possible to reproduce and understand the resulting electrocatalytic activity.

Xia and co-workers also prepared different shape-controlled Pd nanoparticles including cubes, octahedra, icosahedra and right bipyramids which were used as electrocatalysts towards formic acid electrooxidation [134–136]. Unfortunately, and due to the different experimental conditions used in the electrocatalytic 2 Recent Advances in the Use of Shape-Controlled Metal Nanoparticles. . 49 experiments, it is not possible to establish a clear tendency. However, we would like to extract a controversial point from one of these contributions.

In fact, the shape of a nanoparticle anticipates which surface facets will be present at its surface due to the intrinsic correlation between the shape and the surface structure of a nanoparticle. As described in previous contributions, for fcc metals, it is possible to build a stereographic triangle that correlates the crystalline surface Miller index and the shape of the nanoparticle [5–7]. Thus, for instance, for a perfect Pt octahedron, all the exposed facets would be {1 1 1}, while on a perfect Pt cube these facets would be {1 0 0} domains.

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