Oregon, United States

4 years 11 months • Investigated and characterized the effect of lithiation and delithiation on phase transformation of fluorine base conversion materials in Li-ion batteries. • Using extensive transmission electron microscopy and scanning transmission electron microscopy (TEM/STEM) techniques including high resolution transmission electron microscopy (HTEM), dark field TEM, selected area diffraction pattern (SAED), annular dark field imaging (HAADF) STEM, electron energy loss spectroscopy (EELS), EELS elemental mappings, energy filtering transmission electron microscopy (EFTEM), energy dispersive X-ray spectroscopy (EDXS). • Studied the effect of the cathodic formation of the solid electrolyte interphase (SEI) on degradation of the electrochemical cycling of the lithiated/delithiated iron oxyfluouride by using TEM/STEM and X-ray photoelectron spectroscopy (XPS). 职位:Graduate Research Assistant September 2009 - May 2010 (9 months) • Synthesized and developed Bi(Na,K)TiO3-BaTiO3 piezoelectric materials.