Mary Louie
Mary W. Louie, Ph.D.
Senior Associate
Materials & Corrosion Engineering
  • Menlo Park

Dr. Louie specializes in materials characterization and failure analysis of consumer products and engineering structures, including electronics, medical devices and pipelines. Her work has involved contamination analysis, display failure, electrochemical testing and root cause analysis. She has over eight years of research experience studying ion transport and electrocatalysis in fuel cells and electrolyzers. She is well versed in electrochemical characterization and synthesis techniques, including AC impedance spectroscopy, cyclic voltammetry, and electrodeposition. She also has extensive experience developing tools for interrogating electrochemistry under operating conditions, including electrochemical conducting atomic force microscopy (AFM) and confocal Raman microscopy.

Dr. Louie is proficient in many materials and chemical characterization techniques including scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), X-ray absorption spectroscopy (XAS), and elemental analysis by inductively-coupled plasma optical emission spectroscopy (ICPOES) and energy dispersive spectroscopy (EDS). Her synthetic capabilities include magnetron sputtering, electron-beam evaporation, electrodeposition, electrospray ionization, spin-coating, and hydraulic pellet pressing.

Prior to joining Exponent, Dr. Louie was a postdoctoral researcher at the Lawrence Berkeley National Laboratory, where she examined structure-activity relationships of oxide catalysts for aqueous water splitting. During her graduate studies at Caltech, she studied the phase transformation properties of anhydrous proton-conducting membranes and reaction kinetics at gas-electrode-electrolyte interfaces in solid acid fuel cells. Additionally, Dr. Louie has worked at the Dow Chemical Company determining the mechanical and optical properties of polyethylene films and at the NASA Glenn Research Center characterizing the air separation capabilities of hollow-fiber membranes for suppressing airplane fuel tank fires. She has also been a teaching assistant at Caltech for a materials science course on solid state electrochemistry and for a chemical engineering laboratory course on design and process control.

CREDENTIALS & PROFESSIONAL HONORS

  • Ph.D., Chemical Engineering, California Institute of Technology (Caltech), 2011
  • M.S., Chemical Engineering, California Institute of Technology (Caltech), 2007
  • B.S., Chemical Engineering, University of California, Berkeley, 2005
  • Postdoctoral Scholar, Joint Center for Artificial Photosynthesis, Lawrence Berkeley National Laboratory, 2011–2014

    UC President’s Postdoctoral Fellowship, UC Office of the President, 2011–2013

    Ludo Frevel Crystallography Scholarship, International Center for Diffraction Data, 2008

    Baker Hughes Scholarship, Society of Women Engineers, 2008

    NSF Graduate Research Fellowship, National Science Foundation, 2005–2008

    John M. Prausnitz Award for Outstanding Undergraduate Research, UC Berkeley Department of Chemical Engineering, 2005

    Dow Outstanding Junior Award, The Dow Chemical Company, 2004

    Frank Delfino Prize, UC Berkeley Department of Chemical Engineering, 2003

Publications

Ali-Löytty H, Louie MW, Singh MR, Li L, Sanchez Casalongue HG, Ogasawara H, Crumlin EJ, Liu Z, Bell AT, Nilsson A, Friebel D. Ambient-pressure XPS study of a Ni-Fe electrocatalyst for the oxygen evolution reaction. Journal of Physical Chemistry C. DOI: 10.1021/acs.jpcc.5b10931

Klaus S*, Louie MW*, Trotochaud L, Bell AT. Role of catalyst preparation on the electrocatalytic activity of Ni1-xFexOOH for the oxygen evolution reaction. Journal of Physical Chemistry C 2015; 119(32):18303-18316. Equally contributing authors

Klaus S, Cai Y, Louie MW, Trotochaud L, Bell AT. Effects of Fe electrolyte impurities on Ni(OH)2/NiOOH structure and oxygen evolution activity. Journal of Physical Chemistry C 2015; 119(13):7243–7254.

Friebel D*, Louie MW*, Bajdich M*, Sanwald KE, Cai Y, Wise AM, Cheng MJ, Sokaras D, Weng TC, Alonso Mori R, Davis RC, Bargar JR, Nørksov JK, Nilsson A, Bell AT. Identification of highly active Fe sites in (Ni,Fe)OOH for electrocatalytic water splitting. Journal of the American Chemical Society 2015; 137(3):1305–1313. Equally contributing authors

Louie MW, Bell AT. An investigation of thin-film Ni-Fe oxide catalysts for the electrochemical evolution of oxygen. Journal of the American Chemical Society 2013; 135(33):12329–12337.

Friebel D, Bajdich M, Yeo BS, Louie MW, Miller DJ, Sanchez Casalongue H, Mbuga F, Weng TC, Nordlund D, Sokaras D, Alonso Mori R, Bell AT, Nilsson A. On the chemical state of Co oxide electrocatalysts during alkaline water splitting. Physical Chemistry Chemical Physics 2013; 15:17460–17467.

Louie MW, Haile SM. Platinum thin film anodes for solid acid fuel fells. Energy & Environmental Science 2011; 4:4230–4238.

Louie MW, Hightower A, Haile SM. Nanoscale electrodes by conducting atomic force microscopy: Oxygen reduction kinetics at the Pt|CsHSO4 Interface. ACS Nano 2010; 4(5):2811–2821.

Louie MW, Kislitsyn M, Bhattacharya K, Haile SM. Phase transformation and hysteresis behavior in Cs1-xRbxH2PO4. Solid State Ionics 2010; 181(3–4):173–179.

Chisholm CRI, Toberer ES, Louie MW, Haile SM. Engineering the next generation of solid state proton conductors: Synthesis and properties of Ba3-xKxHx(PO4)2. Chemistry of Materials 2010; 22(3):1186–1194.

Varga A, Brunelli NA, Louie MW, Giapis KP, Haile SM. Composite nanostructured solid acid fuel cell electrodes via electrospray deposition. Journal of Materials Chemistry 2010; 20:6309–6315.

Malec AD, Wu DG, Louie M, Skolimowski JJ, Majda M. Gibbs monolayers at the air/water interface: Surface partitioning and lateral mobility of an electrochemically active surfactant. Langmuir 2004; 20:1305–1310.

Presentations


Louie MW. Insights into active interfaces for electrochemical energy conversion. Oral presentation, Stanford University Chemical Engineering Colloquium, Stanford, CA, 2014.

Louie MW, Bell AT. A kinetic and spectroscopic study of nickel-iron oxide for the oxygen evolution reaction. Poster presentation, Gordon Research Conference and Seminar on Electrochemistry, Ventura, CA, 2014.

Louie MW. Insights into active interfaces for electrochemical energy conversion. Oral presentation, UC Berkeley Materials Science & Engineering Colloquium, Berkeley, CA, 2013.

Louie MW, Bell AT. Kinetic and spectroscopic studies of oxygen evolution studies: Ni-Fe oxide. Oral presentation, Joint Center for Artificial Photosynthesis Solar-Fuels Summer School, Berkeley, CA, 2013.

Louie MW, Bell AT. In-situ characterization of nickel-iron catalysts for the oxygen evolution reaction. Oral presentation, 245th American Chemical Society Meeting, New Orleans, LA, 2013.

Louie MW, Bell AT. Electrochemical oxygen evolution over nickel-iron catalysts. Oral presentation, Materials Research Society Spring Meeting, San Francisco, CA, 2013.

Louie MW. Insights into electrochemical reactions by in-situ techniques. Oral presentation, UC Irvine Chemical Engineering & Materials Science Seminar, Irvine, CA, 2012.

Louie MW, Hightower A, Haile SM. Oxygen reduction kinetics at Pt|CsHSO4 by conducting atomic force microscopy. Poster presentation and oral presentation, Gordon Research Conference and Seminar on Electrochemistry, Ventura, CA, 2012.

Louie MW, Haile SM. Electrocatalysis in solid acid fuel cells: Hydrogen permeation through thin film platinum electrodes. Oral presentation, The 6th Workshop on Reactive Metal Processing, Pasadena, CA, 2011.

Louie MW, Chisholm CRI, Haile SM. Structure-property relations in superprotonic solid acid electrolytes. Oral presentation, 241th American Chemical Society Meeting, Anaheim, CA, 2011.

Louie MW, Hightower A, Haile SM. Oxygen reduction kinetics at Pt|CsHSO4 by conducting atomic force microscopy. Oral presentation, Materials Research Society Fall Meeting, Boston, MA, 2010.

Louie MW, Hightower A, Haile SM. Oxygen reduction kinetics at Pt|CsHSO4 by conducting atomic force microscopy. Oral presentation, 15th International Meeting of Solid State Proton Conductors, Santa Barbara, CA, 2010.

Louie MW, Hightower A, Haile SM. Nanoscale electrodes by conducting atomic force microscopy at elevated temperatures. Oral presentation, 56th International Symposium of the American Vacuum Society, San Jose, CA, 2009.

Louie MW, Hightower A, Haile SM. Nanoscale electrodes by conducting atomic force microscopy at elevated temperatures. Poster presentation, ICMR Workshop on Modeling of Fuel Cell Electrocatalysts, Santa Barbara, CA, 2009.

Louie MW, Hightower A, Haile SM. Nanoscale electrodes by conducting atomic force microscopy at intermediate temperatures. Oral presentation, 215th Meeting of the Electrochemical Society, San Francisco, CA, 2009.

Louie MW, Kislitsyn M, Bhattacharya K, Haile SM. Phase transformation and hysteresis behavior in solid acid compounds: Cs1-xRbxH2PO4. Oral presentation, 14th International Meeting of Solid State Proton Conductors, Kyoto, Japan, 2008.

Louie MW, Sasaki K, Haile SM. Towards understanding electrocatalysis in CsH2PO4-based fuel cells. Oral presentation, 213th Meeting of the Electrochemical Society, Phoenix, AZ, 2008.


Prior Experience

Materials Postdoc Fellow, Joint Center for Artificial Photosynthesis, Lawrence Berkeley National Laboratory, 2013–2014

Postdoctoral Scholar, Department of Chemical and Biomolecular Engineering, University of California at Berkeley, 2011–2013

Graduate Research Assistant, Division of Chemistry and Chemical Engineering, California Institute of Technology, 2006–2011

Teaching Assistant, Division of Engineering and Applied Sciences, Division of Chemistry and Chemical Engineering, California Institute of Technology, 2009

Research Assistant, Department of Chemical Engineering, University of California at Berkeley, 2004–2005

Research Intern, Polyolefins R&D, The Dow Chemical Company, 2004

Research Intern, Combustion Branch, NASA Glenn Research Center, 2003

Research Assistant, Department of Chemistry, University of California at Berkeley, 2002–2004


Professional Affiliations

American Chemical Society

Materials Research Society

Additional Information

Peer Reviewer

Journal of the American Chemical Society

Solid State Ionics

CREDENTIALS & PROFESSIONAL HONORS

  • Ph.D., Chemical Engineering, California Institute of Technology (Caltech), 2011
  • M.S., Chemical Engineering, California Institute of Technology (Caltech), 2007
  • B.S., Chemical Engineering, University of California, Berkeley, 2005
  • Postdoctoral Scholar, Joint Center for Artificial Photosynthesis, Lawrence Berkeley National Laboratory, 2011–2014

    UC President’s Postdoctoral Fellowship, UC Office of the President, 2011–2013

    Ludo Frevel Crystallography Scholarship, International Center for Diffraction Data, 2008

    Baker Hughes Scholarship, Society of Women Engineers, 2008

    NSF Graduate Research Fellowship, National Science Foundation, 2005–2008

    John M. Prausnitz Award for Outstanding Undergraduate Research, UC Berkeley Department of Chemical Engineering, 2005

    Dow Outstanding Junior Award, The Dow Chemical Company, 2004

    Frank Delfino Prize, UC Berkeley Department of Chemical Engineering, 2003