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Atomic-resolution spectroscopic imaging of ensembles of nanocatalyst particles across the life of a fuel cell

The thousandfold increase in data-collection speed enabled by aberration-corrected optics allows us to overcome an electron microscopy paradox - how to obtain atomic-resolution chemical structure in individual nanoparticles, yet record a statistically significant sample from an inhomogeneous population. This allowed us to map hundreds of Pt-Co nanoparticles to show atomic-scale elemental distributions across different stages of the catalyst aging in a proton-exchange-membrane fuel cell, and relate Pt-shell thickness to treatment, particle size, surface orientation, and ordering.

preprint2011arXivOpen access
Huolin L. XinJulia A. MundyZhongyi LiuRandi CabezasRobert HovdenLena Fitting KourkoutisJunliang ZhangNalini P. SubramanianRohit MakhariaFrederick T. WagnerDavid A. Muller
cond-mat.mes-hallcond-mat.mtrl-sci
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Open access11 authors2 topics
Imported metadata coverageMissing code, dataset, citation and institution fields are tracked without dominating the paper.Details
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Huolin L. XinJulia A. MundyZhongyi LiuRandi CabezasRobert HovdenLena Fitting KourkoutisJunliang ZhangNalini P. SubramanianRohit MakhariaFrederick T. WagnerDavid A. Muller

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