Current Members


Principal
Investigator

Research
Scientist

  • Jonathan M Polfus

    Jonathan M Polfus

    Visiting senior scientist (Co-affiliated with Prof. Harry Tuller)

    Email: jpolfus AT mit DOT edu
    Phone: 857-544-6886

    Education:
    PhD

    Jonathan's research at MIT deals with the defect chemistry and space-charge at oxide interfaces. The work will focus on mixed conducting Sr-doped LaMnO3 used as SOFC electrodes, as well as La-doped BaSnO3 used as transparent conducting oxide (TCO). Computational approaches using density functional theory (DFT) combined with thermodynamic models will be utilised to describe the defect chemistry and potential profiles across the interfaces. Furthermore, the transport properties for electronic and ionic charge carriers will be elucidated based on effects on concentration and mobility.

  • Alexander K Opitz

    Alexander K Opitz

    Visiting senior scientist

    Email: aopitz AT mit DOT edu
    Phone: 617-324-4949

    Education:
    PhD in Technical Sciences (Electrochemistry), Vienna University of Technology, Austria
    MSc in Technical Chemistry, Vienna University of Technology, Austria

    Alex' research will focus on the catalytic activity of metallic particles exsolved from mixed conducting perovskite-type electrodes. This exsolution usually occurs under reducing conditions, which can be either applied chemically (e.g. exposition to hydrogen) or electrochemically (i.e. under cathodic polarization). The latter can also be referred to as electrochemical switching of the electrode's surface properties.
    A special focus of this work is on gaining an in-depth understanding of the parameters that affect the exsolution process. Doing so, this will allow for tailoring the properties of the exsolved particles such as size, stability at elevated temperatures, or chemical composition.

Postdoctoral
Associates

  • Roland Bliem

    Roland Bliem

    Postdoctoral Associate


    Email: rbliem AT mit DOT edu
    Phone: 617-324-7068

    Education:
    MSc (Physics) and PhD at the Institute of Applied Physics, Vienna University of Technology, Austria

    Roland's research is focused on the surface properties of solid oxide fuel cell cathode materials, in particular Sr-doped LaMO3 perovskites (M=transition metal). He aims to understand the driving forces of segregation processes at these surfaces and relate them to basic surface properties, such as structure, defect concentration, and reducibility. Previous work in the EC interfaces group [Nat.Mater. 15, 1010 (2016)] shows that these basic surface properties can be modified by the deposition of low coverages of metals, influencing the stability of the cathode material. Roland attempts to resolve the origin of the (de)stabilizing effects of these metal species. In parallel, he tests if stabilizing effects observed close to operation conditions can be generalized to include further state-of-the-art perovskite cathode materials.

  • William Bowman

    William Bowman

    Postdoctoral Associate


    Email: wjbowman AT mit DOT edu
    Phone: 617-324-7068

    Education:
    PhD in Materials Science and Engineering, Arizona State University, USA

    Will's research will focus on understanding hydrogen transport properties and surface reactivity characteristics in zirconia-based mixed conducting oxides.

  • Gulin Vardar

    Gulin Vardar

    Postdoctoral Associate


    Email: gvardar AT mit DOT edu
    Phone: 617-253-0180

    Education:
    PhD in Material Science and Engineering, University of Michigan

    Gulin's research is focused on understanding the electrolyte-electrode interfaces in solid state batteries as a function of temperature and applied voltage. The objective of Gulin's current project is to identify compositional profiles, oxidation states and phase stability across these interfaces by using hard and soft x-ray photoelectron spectroscopy and x-ray diffraction.

  • Kiran Adepalli

    Kiran Adepalli

    Postdoctoral Associate


    Email: adepalli AT mit DOT edu
    Phone: 617-253-0180

    Education:
    PhD in Chemistry, Max Planck Institute for Solid State Research, Stuttgart
    M.E., Materials Engineering, Indian Institute of Science, India
    B.Tech, Metallurgical and Materials Engineering, National Institute of Technology, Warangal, India


    Kiran's research at MIT will focus on charge transport mechanisms in mixed conducting oxides under the influence of extended defects. The systems of relevance include cathodes for SOFC and memristor devices. His research interests lie broadly in the area of point defect chemistry, electrochemical investigations and diffusion related studies.


Graduate
Students

  • Lixin Sun

    Lixin Sun

    PhD Candidate, Nuclear Science and Engineering

    Email: lixinsun AT mit DOT edu
    Phone: 617-253-5466

    Education:
    BS Physics, Peking University, China

    Lixin is interested on long-time scale evolution in defected material, i.e. irradiation influence on the material degradation. She's currently working on the defect cluster in irradiated iron via the autonomous basin climbing algorithm, trying to understand the cluster's evolution mechanism. Despite workaholic, she also develops bakingaholic and walkaholic life style as a first year graduate student in Boston.

  • Qiyang Lu

    Qiyang Lu

    PhD Candidate, Materials Science and Engineering

    Email: qiyanglu AT mit DOT edu
    Phone: 617-253-0054

    Education:
    BS Materials Science and Engineering, Tsinghua University, China

    Qiyang Lu joined the Laboratory for Electrochemical Interfaces in November 2012 as a first-year graduate student in Department of Materials Science and Engineering. His current research focuses on the strain effects on surface chemistry and electronic structure of cathode materials in the solid oxide fuel cells (SOFCs).

  • Jing Yang

    Jing Yang

    PhD Candidate, Materials Science and Engineering

    Email: yangjing AT mit DOT edu
    Phone: 617-253-0054

    Education:
    BS Physics, Peking University, China

    The aim of my work is to understand how the existence of interface influence the defect equilibria for oxide materials. I'm currently working on ZrO2/Cr2O3 heterojunction to examine the effect of oxidized chromium on zircalloy corrosion.

  • Minh A Dinh

    Minh A Dinh

    Graduate Student, Nuclear Science and Engineering

    Email: minhdinh AT mit DOT edu
    Phone: 617-253-0054

    Education:
    BS, Nuclear Science and Engineering, MIT

    My research interests lie on embrittlement process of iron sulfide films in the existence of hydrogen. This process is substantially important to sub-sea infrastructure of off-shore oil platforms and understanding the effect of hydrogen on this process could help finding a new solution against such extreme environments. In particular, I am looking at the effect of hydrogen in bulk mackinawite structure using DFT.

  • Jiayue Wang

    Jiayue Wang

    PhD Candidate, Nuclear Science and Engineering

    Email: wangjy11 AT mit DOT edu
    Phone: 617-253-0180

    Education:
    BS, Engineering Physics, Tsinghua University

    Jiayue is interested on the improvement of durability of solid oxide electrolysis cells (SOECs). He's currently working on the surface chemistry changes on doped ceria during carbon deposition.

  • Max

    Maximilian Jansen

    Visiting student

    Email: majansen AT mit DOT edu
    Phone: 617-253-5466

    Education:
    Bachelor's degree in material science at ETH Zurich, Switzerland

    I am a visiting student from ETH Zurich, currently working on my master thesis in collaboration with Prof. Rupp's group at ETHZ . In my research I will look at LaBO3 thin films (B=transition metal) as potential resistive switching materials. During the course of my master thesis I intend to examine their electronic states using STM and XPS to learn more about the underlying switching mechanism.

  • Fatih

    Fatih Piskin

    Visiting Student

    Email: fpiskin AT mit DOT edu
    Phone: 617-253-5466

    Education:
    MS Metallurgical and Materials Engineering, Middle East Technical University, Turkey
    BS Materials Science and Engineering, Anadolu University, Turkey

    I am a visiting student from METU, Turkey. I am interested on the improvement of the cathode materials for solid oxide fuel cells (SOFCs) to ensure better surface stability and electrochemical performance. Currently I am working on surface improvement of (La,Sr)CoO3 cathodes with a different dopant ratio.

  • Dongha

    Dongha Kim

    Graduate Student, Materials Science and Engineering

    Email: hkkdh AT mit DOT edu
    Phone: 617-253-5466

    Education:
    MS Materials Science and Engineering, Seoul National University, South Korea
    BS Materials Science and Engineering, Seoul National University, South Korea

    I am focusing on oxide electrocatalyst surfaces which are important for fuel cells and thermochemical splitting of water or carbon dioxide.

  • Yenting

    Yen-Ting Chi

    Graduate Student, Materials Science and Engineering
    co-supervised with Prof. Van Vliet
    Email: yenting AT mit DOT edu
    Phone: 857-205-4448

    Education:
    BS, Materials Science and Engineering, National Taiwan University

  • Vrindaa

    Vrindaa Somjit

    Graduate Student, Materials Science and Engineering

    Email: vrindaa AT mit DOT edu
    Phone: 617-342-7068

    Education:
    B.Tech., Metallurgical and Materials Engineering, National Institute of Technology-Tiruchirappalli, India

Undergraduate
Student

  • Jordan Hines

    Jordan Hines

    Undergraduate, Materials Science and Engineering, Mathematics

    Email: jordanh AT mit DOT edu
    Phone: 617-803-6729

    Education:
    BS Candidate, Materials Science and Engineering, Mathematics, MIT

    My research is focused on carbon deposition in solid oxide electrolysis cells (SOECs). Carbon deposition is one of the major contributors to degradation and decreased performance in SOECs. My goal is to create coking-resistant cathode materials, specifically investigating perovskites. In addition to studying materials science, I study theoretical mathematics and enjoy teaching it to high school and middle school students through the Educational Studies Program.

Group Alumni


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