The ability to engineer precisely the size, composition, shape, structure, and surface properties of nanomaterials is challenging for the design and preparation of high performance catalysts for applications in sustainable energy such as fuel cells. Herein we report recent findings of an in-situ investigation of the structures of alloyed nanoparticle/nanowire or core-shell type catalysts in oxygen reduction reaction under fuel cell operating conditions. The focus is the understanding of the atomic-scale phase properties, which is aided by both experimental and theoretical studies of the composition, phase state, and atomic scale structure using an array of advanced analytical techniques, including synchrotron high energy X-ray diffraction coupled with pair distribution function analysis. The results provide new insights into the atomic-scale structural tuning of the nanoalloys for enhancing the catalytic properties.

Nanoalloy catalysts in fuel cell reactions: An <i>in-situ</i> structural characterization

256th National Meeting (2018)

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Nanoalloy catalysts in fuel cell reactions: An in-situ structural characterization