Combined background of scientist and engineer with over 8 years of experience in lithium ion battery field. Broad knowledge and R&D experience in various lithium battery chemistries and materials (electrodes, electrolyte, additives etc.), with deep penetration in cathode domain (e.g., LCO, NMC, LMO, LFP, binary compounds, etc.). Solid background on material science and understanding of material-property relationship fundamentals. Intensive hands on experience in material characterization and high performance lithium battery development. Strong observation and analysis skills. Detail oriented. Systematic and efficient problem solver, with demonstrated success accomplishing highly challenging projects. Excellent technical writing and communication skills. Strong interpersonal skills and ability to work both independently and as a team player.
XRD, SEM, TEM, EDX, BET, TGA/DSC, ICP, PSD, XAS, NMR, Cycle and rate test, GITT/PITT, EIS, CV etc.
Cell level development and validation: electrode engineering, cell design & fabrication, failure analysis, etc.
Process development, design of experiments, data collection and analysis.
Program & software: MS office, Origin, gnuplot, JADE, VESTA, CELREF, GSAS/EXPGUI, etc.
Applied Materials IncJune 2011 to CurrentProcess Engineer/Senior Process Engineer Santa Clara, CA
Developing novel cost effective synthesis system for cathode active materials.
Leading role in electrode evaluations for high performance structured cathode and high capacity anode.
Brookhaven National Laboratory & SUNYJune 2010 to June 2011Postdoctoral Associate Stony Brook, NY.
Fabrication of nano-scale LIBs (solid-state thin film battery) and development of in situ investigations of electrochemical reactions using electron microscopes.
Using electron microscopy, NMR, XAS to study the microstructural and morphological changes during (de)lithiation processes in nano size materials, metal oxides, phosphates and intermetallic electrodes.
SUNYJanuary 2006 to May 2010Graduate Research Assistant Stony Brook, NY
Structural characterization of functional electrode materials for rechargeable lithium ion batteries by using XRD, Neutron Diffraction, XAS, Solid State NMR etc.
Synthesized Li[NiyMnyCo(1-2y)]O2 series materials and investigated the short and long range structures of their pristine and cycled phases as well as the (de)lithiation mechanisms upon electrochemical reactions.
Studied synthesis effects on NMC111 and high voltage spinel Li[Ni0.5Mn1.5]O4.
Investigated the cation orderings in high capacity layered-layered composites.
Studied the electrochemical behavior of layered oxysulfides as positive electrodes in LIBs.
Developed ex situ and in situ X-ray fluorescence imaging technique and studied the distribution of different elements in layered Sr2MnO2Cu3.5S2 electrode materials during electrochemical processes.
SUNYAugust 2005 to July 2006Graduate Teaching Assistant Stony Brook, NY
University of PittsburghAugust 2004 to July 2005Graduate Teaching Assistant Pittsburgh, PA
SUNY at Stony Brook5 2010Ph.D: Inorganic ChemistryStony Brook, USAInorganic Chemistry Dissertation: Structural Study of Layered Oxides and Oxysulfides as Positive Electrode Materials for Rechargeable Lithium Ion Batteries (Advisor: Clare P. Grey
Patents and Patent Applications US Patent 20,120,288,617, WO Patent 2,012,155,092 "Precursor Formulation for Battery Active Materials Synthesis", with Yang et al, 5/11/2012 WO Patent 2,013,025,505, "Particle Synthesis Apparatus and Methods", with Yang et al, 8/10/2012 Cathode Active Material Coating", with Yang et al, 2013 Apparatus and Methods for Synthesis of Battery-Active Materials", with Yang et al, 2013 Multi-Layer Battery Electrode Design for Enabling Thicker Electrode Fabrication", with Sikha et al, 2013 Publications K. J. Rosina, M. Jiang, D. Zeng, E. Salager, A. S. Best, C. P. Grey, "Structure of Aluminum Fluoride Coated Li[Li1/9Ni1/3Mn5/9]O2 Cathodes for Secondary Lithium-ion Batteries", J. Mater. Chem., 2012, 22, 20602-20610. J. Cabana, M. Casas-Cabanas, F. Omenya, N. A. Chernova, D. Zeng, M. S. Whittingham, C. P. Grey, "Composition-structure relationships in the Li-ion battery electrode material LiNi0.5Mn1.5O4", Chem. Mater., 2012, 24 (15), 2952-2964. R. Robert, D. Zeng, A. Lanzirotti, P. Adamson, S. J. Clarke, C. P. Grey, "Scanning X-Ray Fluorescence Imaging Study of Lithium Insertion into Copper Based Oxysulfides for Li-ion Batteries", Chem. Mater.,2012, 24 (14), 2684-2691. S. Bo, F. Wang, Y. Janssen, D. Zeng, K.-W. Nam, W. Xu, L.-S. Du, J. Graetz, X.-Q. Yang, Y. Zhu, J. Parise, C. P. Grey, "Degradation and (de)lithiation processes in the high capacity battery material LiFeBO3", J. Mater. Chem., 2012, 22 (18), 8799-8809. Y. S. Meng, T. McGilvray, M. Yang, D. Gostovic, F. Wang, D. Zeng, Y. Zhu and J. Graetz, "In situ Analytical Electron Microscopy for Probing Nanoscale Electrochemistry", Interface, 2011, 20 (3), 49-53. D. Zeng, J. Cabana, W.-S. Yoon and C. P. Grey, "Investigation of the Structural Changes of Li[NiyMnyCo(1-2y)]O2 (y = 0.05) upon Electrochemical Lithium Deintercalation", Chem. Mater., 2010, 22 (3), 1209-1219. E. A. Pomerantseva, T. L. Kulova, D. Zeng, A. M. Skundin, C. P Grey, E. A. Goodilin and Y. D. Tretyakoy, "Chemically modified Ba6Mn24O48 tunnel manganite as a lithium insertion host", Solid State Ionics, 2010, 181,1002-1008. D. Zeng, J. Cabana, J. Bréger, W.-S. Yoon and C. P. Grey, "Cation Ordering in Li[NiyMnyCo(1-2y)]O2-Layered Cathode Materials; An NMR, Pair Distribution Function, X-ray Absorption Spectroscopy and Electrochemical Study", Chem. Mater. 2007, 19 (25), 6277-6289. S. Indris, D. Zeng, J. Cabana, C. F. Smura, O. J. Rutt, S. J. Clarke, C. P. Grey, "Electrochemical Insertion of Li into Sr2MO2Cu2S2 (M=Mn, Co, Ni)", in "Solid-State Chemistry of Inorganic Materials VI", edited by R. Seshadri etc. Warrendale, PA, 2007, 0988-QQ08-08. Conference Presentations and Workshops Gordon Research Conference - Solid State Chemistry, New London, NH, U.S., 2008. (Poster) 214th Meeting of the Electrochemical Society, Honolulu, Hawaii, U.S., 2008. (Oral presentation & Poster) 17th International Conference on Solid State Ionics. Toronto, Canada, 2009. (Oral presentation) 216th Meeting of the Electrochemical Society, Vienna, Austria, 2009. (Oral presentation & Poster) 15th International Meeting on Lithium Batteries, Montreal, Canada, 2010. (Poster) Material Research Society Spring Meeting, San Francisco, US, 2011 (Poster) The Energy Frontier Research Centers Summit and Forum, Washington, D.C., US, 2011 (Poster) Applied Materials Inc. Engineering and Technology Conference, Las Vegas, US, 2012 (Poster) Applied Materials Inc. Engineering and Technology Conference, Monterey, US, 2013 (Poster) National School on Neutron and X-ray Scattering, Argonne National Lab / Oak Ridge National Lab. 2008. Introduction to XAFS: Experiment, Theory, Data Analysis, Brookhaven National Lab. 2008. Energy Storage Research Opportunities at the National Synchrotron Light Source (NSLS), BNL. 2009.
data collection, design of experiments, DSC, film, functional, imaging, Logic, Materials, MS office, NMR, novel, Process development, processes, structured, validation
2010.12 Chemistry Award for Outstanding Doctoral Student, SUNY at Stony Brook
2009.08 The 216th ECS Meeting Travel Grant Award
2009.05 Sigma Xi Award for Excellence in Research