Work

Atomic-Resolution Spectroscopic Imaging of Ensembles of Nanocatalyst Particles Across the Life of a Fuel Cell

Year: 2011

Type: article

Abstract: The thousand-fold 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.

Source: Nano Letters

DOI: 10.1021/nl203975u

Authors: Huolin L. Xin, Julia A. Mundy, Zhongyi Liu, Randi Cabezas, Robert Hovden, Lena Fitting Kourkoutis, Junliang Zhang, Nalini P. Subramanian, Rohit Makharia, Frederick T. Wagner, David A. Muller

Institutions: Cornell University, General Motors (United States), Florida International University

Language: English

Topic: Advanced Electron Microscopy Techniques and Applications

Subfield: Structural Biology

Field: Biochemistry, Genetics and Molecular Biology

Domain: Life Sciences

Open Access status: green

Funders: National Science Foundation, U.S. Department of Energy, Office of Science, Cornell Center for Materials Research, National Defense Science and Engineering Graduate, Division of Materials Research, Basic Energy Sciences

Awards: G5273120562, IMR: Acquisition of a High Resolution Electron Spectrometer for Subnanometer Electron Microscopy, Nanocharacterization Research and Education, Center for Nanoscale Systems in Information Technologies, MRSEC: Cornell Center for Materials Research, TAS::89 0227::TAS RECOVERY; RECOVERY ACT - NANOSTRUCTURED INTERFACES FOR ENERGY GENERATION, CONVERSION, AND STORAGE -- EFRC; PI - HECTOR ABRUNA

OpenAlex ID: W2022410126

FWCI: 9.773

Cites: 42

Cited by: 177

Related to: 10