Daniel Esposito

Phone: (212) 854-2648
Fax: (212) 854-3054
Email: de2300@columbia.edu
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Ph.D., Chemical Engineering, University of Delaware
B.S., Chemical Engineering, Lehigh University

Research Interests

Solar fuels, electrocatalysis, photoelectrochemistry, electrolyzers, fuel cells, buried interfaces, and in-situ analytical techniques for studying electrochemical systems.
This is a very exciting time to be working in the field of energy conversion, an area that is poised to undergo massive transformations in the coming years as the price of electricity from renewable solar and wind generators continues its downward trajectory. In the Solar Fuels Engineering Lab, we develop novel energy conversion materials and devices that can accelerate the transformation to a sustainable energy future thanks to their ability to convert sunlight or electricity into storable “solar fuels” such as hydrogen. Of particular interest in our research group are electrochemical energy conversion technologies such as photoelectrochemical (PEC) and photovoltaic (PV) electrolyzer devices. The fields of PEC and electrochemical energy conversion have tremendous potential to transform how renewable energy is captured and stored because they offer a means to overcome a primary weakness of solar energy: its intermittency. By converting sunlight into solar fuels during the day, PEC and electrolysis technologies enable energy from the sun to be stored in the chemical bonds of fuels.
Reflecting the interdisciplinary nature of the PEC and electrochemistry fields, the strengths of this research program lie at the intersections of electrocatalysis, photovoltaics, materials science, reaction engineering, and interfacial science and engineering. Engineering and scientific fundamentals that underlie these subjects are applied to a host of problems ranging from the study of electrocatalytic reactions at buried interfaces to the development of unconventional membraneless electrolysis cells. Within each research project, we seek to establish the molecular and macroscopic design principles governing the operation of (photo)electrochemical technologies, and combine that knowledge with innovative approaches to engineering more efficient, manufacturable, and cost-effective solutions. A common theme to many of our projects is the use of in situ analytical tools for imaging (photo)electrochemical materials or processes at small length scales and/or fast time scales.

Select Publications (see our group website for the most up-to-date listing)

D.V. Esposito, “Membrane Coated Electrocatalysts—an Alternative Approach to Achieving Stable and Tunable Electrocatalysis“, ACS Catalysis,vol. 8, 457–465,2018. Download here.

D.V. Esposito, “Membraneless Electrolyzers for Low-Cost Hydrogen Production in a Renewable Energy Future”. Joule, vol. 1, 1-8, 2017. Download here.

A. E. Dorfi, A.C. West, D.V. Esposito, “Quantifying Losses in Photoelectrode Performance due to Single Hydrogen Bubbles”, Journal of Physical Chemistry C., 121 (48), 26587–26597, 2017. Download here.

O.O. Talabi, A.E. Dorfi, G.D. O’Neil, D.V. Esposito, “Membraneless Electrolyzers for the Simultaneous Production of Acid and Base”. Chemical Communications, 53, 8006-8009 2017. Part of the 2017 Emerging Investigators Issue. Download here.

N. Y. Labrador, X. Li, Y. Liu, J. T. Koberstein, R. Wang, H. Tan, T. P. Moffat, and D. V. Esposito, “Enhanced Performance of Si MIS Photocathodes Containing Oxide-Coated Nanoparticle Electrocatalysts” , Nano Letters, vol. 16, 6452-6459, 2016. Download here.

D.V. Esposito, J.B. Baxter, J. John, N.S. Lewis, T.P. Moffat, T. Ogitsu, G.D. O’Neil, T.A. Pham, A.A. Talin, J.M. Velazquez, B.C. Wood. “Methods of Photoelectrode Characterization with High Spatial and Temporal Resolution.” Energy & Environmental Science, vol. 8, 2863-2885, 2015. Download here.

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