Research Output per Year
Research Output per Year
Overview
Personal Profile
Sunilkumar Khandavalli is a researcher at NREL in the Materials Science Center. He has strong experience in areas of rheology of complex fluids and roll-to-roll processing. At NREL, he has been involved in various R&D projects related to the manufacturing of catalyst layers for polymer electrolyte membrane fuel cells and water elecotrolyzers. His research primarily focuses on understanding the microstructure of catalyst ink formulations and the composition interactions using combination of rheology and X-ray scattering techniques. Prior to NREL, his graduate research focused on the rheology of colloidal dispersions and the processing behavior of non-Newtonian fluids in roll-to-roll printing and coating processes.
Research Interests
Microstructure of fuel and electrolyzer catalyst inks
Rheology of complex fluids
Non-Newtonian fluid dynamics in roll-to-roll processes
Education/Academic Qualification
Bachelor, Chemical Engineering, Indian Institute of Technology Madras
PhD, Mechanical Engineering, University of Massachusetts Amherst
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Collaborations and Top Research Areas From the Past 5 Years
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Effect of Isopropanol Cosolvent on the Rheology and Spinnability of Aqueous Polyacrylic Acid Solutions
Khandavalli, S., Chen, Y., Sharma-Nene, N., Rajan, K., Sur, S., Rothstein, J., Reeves, K., Cullen, D., Neyerlin, K., Mauger, S. & Ulsh, M., 2023, In: Journal of Polymer Science. 61, 14, p. 1495-1512 18 p.Research output: Contribution to journal › Article › peer-review
Open Access -
Viscoelasticity Enhancement and Shear Thickening of Perfluorinated Sulfonic Acid Ionomer Dispersions in Water-Alcohol Solvent Mixtures
Khandavalli, S., Hyung Park, J., Winter, H. H., Myers, D. J., Ulsh, M. & Mauger, S., 2023, In: Macromolecules. 56, 17, p. 6988-7005 18 p.Research output: Contribution to journal › Article › peer-review
4 Scopus Citations -
Toward Optimizing Electrospun Nanofiber Fuel Cell Catalyst Layers: Microstructure and Pt Accessibility
Kabir, S., Van Cleve, T., Khandavalli, S., Medina, S., Pylypenko, S., Mauger, S., Ulsh, M. & Neyerlin, K. C., 26 Apr 2021, In: ACS Applied Energy Materials. 4, 4, p. 3341-3351 11 p.Research output: Contribution to journal › Article › peer-review
24 Scopus Citations -
Toward Optimizing Electrospun Nanofiber Fuel Cell Catalyst Layers: Polymer-Particle Interactions and Spinnability
Ulsh, M., Khandavalli, S., Sharma-Nene, N., Kabir, S., Sur, S., Rothstein, J., Neyerlin, K. & Mauger, S., 14 May 2021, In: ACS Applied Polymer Materials. 3, 5, p. 2374-2384 11 p.Research output: Contribution to journal › Article › peer-review
17 Scopus Citations -
Effect of Dispersion-Medium Composition and Ionomer Concentration on the Microstructure and Rheology of Fe-N-C Platinum Group Metal-Free Catalyst Inks for Polymer Electrolyte Membrane Fuel Cells
Khandavalli, S., Iyer, R., Park, J., Myers, D., Neyerlin, K., Ulsh, M. & Mauger, S., 2020, In: Langmuir. 36, 41, p. 12247-12260 14 p.Research output: Contribution to journal › Article › peer-review
31 Scopus Citations