Sandia Energy > Programs > Energy Storage > Staff > Stephen Percival Stephen Percival, Ph.D. Materials Scientist Contact Information Stephen Percival, Ph.D. / (505) 845-0207 Biography Stephen J. Percival is a Senior R&D Materials Scientist and electrochemist in the Electronic, Optical, and Nano Materials Department at Sandia National Laboratories in Albuquerque, New Mexico. Stephen received his bachelor’s degree from the University of Nevada, Reno and PhD from the University of Washington, Seattle. Before coming to Sandia National Laboratories, he worked as a postdoctoral associate in the lab of Professor Allen J. Bard at the University of Texas at Austin. Stephen has worked with many various electrochemical and materials systems but is inspired by energy and environmentally related fields including energy storage technologies, materials and catalysis. Research Interests Materials for electrochemical energy storage Functional coatings, membranes and separators to control ion movement at interfaces Reaction kinetics, catalysis and nanoelectrochemistry Nano-structured and composite materials Colloidal nanoparticles, nanowires and 2D nanomaterials Education Ph.D. in Chemistry, University of Washington (Seattle, WA), 2015 B.S. in Chemistry, University of Nevada, (Reno, NV), 2008 Key Publications E.D. Spoerke, M.M. Gross, S.J. Percival, L.J. Small “Molten Sodium Batteries” Energy-Sustainable Advanced Materials, M. E. Alston and T. N. Lambert, Ed. Berlin, Germany: Springer Nature, 2020 (In Press). M.M. Gross, L.J. Small, A.S. Peretti, S.J. Percival, M. Rodriguez, E.D. Spoerke “Tin-Based Ionic Chaperone Phases to Improve Low Temperature Molten Sodium-NaSICON Interfaces” J. Mater. Chem. A, vol. 21, pp. 17012-17018, 2020, DOI: 10.1039/D0TA03571H. I. Matanovic, K. Leung, S.J. Percival. J.E. Park. P. Lu, P. Atanassov, S.S. Chou “Towards Defect Engineering in Hexagonal MoS2 Nanosheets for Tuning Hydrogen Evolution and Nitrogen Reduction Reactions” Appl. Mater. Today, vol. 21, pp. 100812, 2020, DOI: 10.1016/j.apmt.2020.100812. S.J. Percival, M. Melia, C. Alexander, D.W. Nelson, E. Schindelholz, E.D. Spoerke “Nanoscale thin film corrosion barriers enabled by multilayer polymer clay nanocomposites” Surf. and Coat. Tech., vol. 383, pp. 125228, 2020, 10.1016/j.surfcoat.2019.125228. M. Melia, S. Qin, S.J. Percival, E.D. Spoerke, J. Grunlan, E. Schindelholz “Influence of Clay Size on Corrosion Protection by Clay Nanocomposite Thin Films” Prog. Org. Coat. 2020, 140, 105489, DOI: 10.1016/j.porgcoat.2019.105489. Key Patents S.J. Percival, C. Campbell, M. Celina, E. Schindelholz, E.D. Spoerke “Inherently Crosslinkable Nanocomposite Thin Film Anticorrosion Coating” SD# 15228, US Application # 62/990,704, Sept. 3, 2020. E.D. Spoerke, M.M. Gross, S.J. Percival, L.J. Small “Surface Treatments of NaSICON Ceramics for Improved Sodium Electrochemical Interfaces” US Patent Application # 62/940,697, Nov. 26, 2019. E.D. Spoerke, S.J. Percival, L.J. Small “Molten Inorganic Electrolytes for Low Temperature Sodium Batteries” US Patent Application # 16/564,751. Sep. 2019. L.J. Small, S.J. Percival, E.D. Spoerke “Nanostructured Polyelectrolytes for Electrodialysis Membranes” US Application # 16/128,081, Jun. 10, 2020.