I am currently a postdoctoral researcher at the National Renewable Energy Laboratory working on polymer electrolyte membrane electrolysis for renewable hydrogen production.
In 2019 I completed my PhD at Cornell University in the lab of Professor David Muller, where I studied materials for electrochemical energy conversion and storage devices, including batteries and fuel cells, using transmission electron microscopy and electrochemistry. My PhD research projects included investigating the performance and durability of proton exchange membrane fuel cell catalysts using scanning transmission electron microscope (STEM) imaging, 3D electron tomography, and electron energy loss spectroscopy (EELS); developing improved techniques for electron tomography of nanoparticles; and investigating the atomic and electronic structure of lithium ion battery materials with atomic-resolution STEM imaging, EELS, and nanobeam electron diffraction (NBED). From 2019 to 2020 I was a fellow in the Department of Energy Fuel Cell Technologies Office within the Office of Energy Efficiency and Renewable Energy working in the area of fuel cell R&D, with particular focus on heavy duty fuel cell electric vehicles.
Publications
M. Ko, E. Padgett, V. Yarlagadda, A. Kongkanand, D.A. Muller, “Revealing the Nanostructure of Mesoporous Fuel Cell Catalyst Supports for Durable, High-Power Performance”, Journal of the Electrochemical Society, doi: 10.1149/1945-7111/abe28e (2021).
M.E. Holtz, E. Padgett, R. Steinhardt, C.M. Brooks, D. Meier, D.G .Schlom, D.A. Muller, J.A. Mundy, “Dimensionality-Induced Change in Topological Order in Multiferroic Oxide Superlattices”, Physical Review Letters, doi: 10.1103/PhysRevLett.126.157601 (2021).
E. Padgett, M.E. Holtz, P. Cueva, E. Langenberg, D.G. Schlom, D.A. Muller, “The Exit-Wave Power-Cepstrum Transform for Scanning Nanobeam Electron Diffraction: Robust Strain Mapping at Subnanometer Resolution and Subpicometer Precision”, Ultramicroscopy, doi: 10.1016/j.ultramic.2020.112994 (2019).
E. Padgett, “Guiding Development of Fuel Cell Catalysts with Statistically Robust Transmission Electron Microscopy”, Cornell University PhD Dissertation, doi: 10.7298/2v7z-ej81 (2019).
D. Ren, E. Padgett, Y. Yang, L. Shen, Y. Shen, B.D.A. Levin, Y. Yu, F.J. DiSalvo, D.A. Muller, H.D. Abruña, “Ultrahigh Rate Performance of a Robust Lithium Nickel Manganese Cobalt Oxide Cathode with Preferentially Orientated Li-Diffusing Channels”, ACS Applied Materials & Interfaces, doi: 10.1021/acsami.9b05602 (2019).
W. You, E. Padgett, S.N. MacMillan, D.A. Muller, G.W. Coates, “Highly conductive and chemically stable alkaline anion exchange membranes via ROMP of trans-cyclooctene derivatives”, Proceedings of the National Academy of Sciences, doi: 10.1073/pnas.1900988116 (2019).
V. Beermann, M.E. Holtz, E. Padgett, J.F. de Araujo, D.A. Muller, P. Strasser, “Real-time imaging of activation and degradation of carbon supported octahedral Pt–Ni alloy fuel cell catalysts at the nanoscale using in situ electrochemical liquid cell STEM”, Energy & Environmental Science, doi: 10.1039/C9EE01185D (2019).
E. Padgett, V. Yarlagadda, M.E. Holtz, M. Ko, B.D.A. Levin, R. Singh Kukreja, J.M. Ziegelbauer, R.N. Andrews, J. Ilavsky, A. Kongkanand, D.A. Muller, “Mitigation of PEM Fuel Cell Catalyst Degradation with Porous Carbon Supports”, Journal of the Electrochemical Society, doi: 10.1149/2.0371904jes (2019).
Y. Xiong, Y. Yang, H. Joress, E. Padgett, U. Gupta, V. Yarlagadda, D.N. Agyeman-Budu, X. Huang, T.E. Moylan, R. Zeng, A. Kongkanand, F.A. Escobedo, J.D. Brock, F.J. DiSalvo, D.A. Muller, H.D. Abruña, “Revealing the atomic ordering of binary intermetallics using in situ heating techniques at multilength scales”, Proceedings of the National Academy of Sciences, doi: 10.1073/pnas.1815643116 (2019).
E. Padgett, N. Andrejevic, Z. Liu, A. Kongkanand, W. Gu, K. Moriyama, Y. Jiang, S. Kumaraguru, T.E. Moylan, R. Kukreja, D.A. Muller, “Editors’ Choice—Connecting Fuel Cell Catalyst Nanostructure and Accessibility Using Quantitative Cryo-STEM Tomography”, Journal of the Electrochemical Society, doi: 10.1149/2.0541803jes (2018).
Y. Jiang, E. Padgett, R. Hovden, D.A. Muller, “Sampling limits for electron tomography with sparsity-exploiting reconstructions” Ultramicroscopy, https://doi.org/10.1016/j.ultramic.2017.12.010 (2018).
R. Rizo, R. Arán-Ais, E. Padgett, D. Muller, M.J. Lázaro, J. Solla-Gullon, J.M. Feliu, E. Pastor, H.D. Abruña, “Pt-richcore/Sn-richsubsurface/Ptskin nanocubes as highly active and stable electrocatalysts for the ethanol oxidation reaction”, Journal of the American Chemical Society, doi: 10.1021/jacs.8b00588 (2018).
B.D.A. Levin, Y. Jiang, E. Padgett, S. Waldon, C. Quammen, C. Harris, U. Ayachit, M. Hanwell, P. Ercius, D.A. Muller, R. Hovden, “Tutorial on the Visualization of Volumetric Data Using tomviz“, Microscopy Today, doi: 10.1017/S1551929517001213 (2018).
E. Padgett, R. Hovden, J.C. DaSilva, B.D.A. Levin, J.L. Grazul, T. Hanrath, and D.A. Muller, “A Simple Preparation Method for Full-Range Electron Tomography of Nanoparticles and Fine Powders” Microscopy and Microanalysis, doi:10.1017/S1431927617012764 (2017).
V. Beermann, M. Gocyla, S. Kühl, E. Padgett, H. Schmies, M. Goerlin, N. Erini, M. Shviro, M. Heggen, R.E. Dunin-Borkowski, D.A. Muller, P. Strasser, “Tuning the Electrocatalytic Oxygen Reduction Reaction Activity and Stability of Shape-Controlled Pt–Ni Nanoparticles by Thermal Annealing − Elucidating the Surface Atomic Structural and Compositional Changes”, Journal of the American Chemical Society, DOI: 10.1021/jacs.7b06846 (2017).
A.M. Pasqualeti, E. Padgett, D.Y. Kuo, D.A. Muller, F.H.B. Lima, J. Suntivich, “Influence of Aliovalent Substitutions on Oxygen Reduction on Tantalum Oxynitrides”, Journal of the Electrochemical Society doi: 10.1149/2.1361706jes (2017).
J. A. Mundy, C. M. Brooks, M. E. Holtz, J. A. Moyer, H. Das, A. F. Rébola, J. T. Heron, J. D. Clarkson, S. M. Disseler, Z. Liu, A. Farhan, R. Held, R. Hovden, E. Padgett, Q. Mao, H. Paik, R. Misra, L. F. Kourkoutis, E. Arenholz, A. Scholl, J. A. Borchers, W. D. Ratcliff, R. Ramesh, C. J. Fennie, P. Schiffer, D. A. Muller & D. G. Schlom, “Atomically engineered ferroic layers yield a room-temperature magnetoelectric multiferroic”. Nature 537, 523-527 (2016).
A.L. Graves, S. Nashed, E. Padgett, C.P. Goodrich, A.J. Liu, J.P. Sethna, “Pinning susceptibility: the effect of dilute, quenched disorder on jamming”, Physical Review Letters, DOI: 10.1103/PhysRevLett.116.235501 (2016).
B.D.A. Levin, E. Padgett, C-C. Chen, M.C. Scott, R. Xu, W. Theis, Y. Jiang, Y. Yang, C. Ophus, H. Zhang, D-H. Ha, D. Wang, Y. Yu, H.D. Abruña, R.D. Robinson, P. Ercius, L.F. Kourkoutis, J. Miao, D.A. Muller, R. Hovden, “Nanomaterial datasets to advance tomography in scanning transmission electron microscopy”, Sci Data, 3, 160041 (2016).
C.D. Cowman, E. Padgett, K.W. Tan, R. Hovden, Y. Gu, N. Andrejevic, D. Muller, G.W. Coates, and U. Wiesner, “Multicomponent Nanomaterials with Complex Networked Architectures from Orthogonal Degradation and Binary Metal Backfilling in ABC Triblock Terpolymers”. J. Am. Chem. Soc. 137, 6026-6033 (2015).
See my Google Scholar profile for a complete list of co-authored publications and citations.
