Taejun Ha Email & Phone Number

Ph.D. candidate in Materials Science and EngineeringKorea University, Republic of KoreaSupervisor: Dr. Jae-Hyeok Shim (KIST), Prof. Joonho Lee (Korea University)https://www.researchgate.net/profile/Taejun_HaRegistered patents1. J.H. Shim, T. Ha, J.Y. Suh, "Methods for fabricating cerium boride powder", Republic of Korea, KR 10-2118428 (Registered on May 28, 2020).2. J.H. Shim, T. Ha, J.Y. Suh, "Method of preparing cerium boride powder", USA, US 10,793,476 B2 (Registered on Oct. 06, 2020).Published papers1. T. Ha, Y.W. Cho, S.I. Lee, J.Y. Suh, J. Lee, J.H. Shim, Y.S. Lee, "Hydrogen occupation in Ti4M2O compounds (M = Fe, Co, Ni, Cu, and y = 0, 1) and their hydrogen storage characteristics", Journal of Alloys and Compounds, 891 (2022) 162050.2. S.I. Lee, T. Ha, Y.S. Lee, D.I. Kim, J.Y. Suh, Y.W. Cho, B. Hwang, J. Lee, and J.H. Shim, "EBSD microstructural analysis of AB-type TiFe hydrogen storage alloys", Materials Characterization, (2021) 111276.3. T. Ha, S.I. Lee, J. Hong, Y.S. Lee, D.I. Kim, J.Y. Suh, Y.W. Cho, B. Hwang, J. Lee, and J.H. Shim, "Hydrogen storage behavior and microstructural feature of a TiFe–ZrCr2 alloy", Journal of Alloys and Compounds, 853 (2021) 157099.4. T. Ha, Y.S. Lee, J. Lee, J.H. Shim, "Mechanochemical synthesis of CeB6 nanopowder", Ceramics International, 45 (2019) 19442-19446.5. J. Choi, T. Ha, J. Park, Y.S. Lee, H.N. Han, J. Lee, J.H. Shim, "Mechanochemical synthesis of Ce3Al11 powder and its catalytic effect on the hydrogen sorption properties of NaAlH4", Journal of Alloys and Compounds, 784 (2019) 313-318.Main Research Skills Achieved1. Design and machining skills for building in situ experimental tools(e.g. in situ hydrogen-pressurized setup for diffraction-based system, in situ hydrogen desorption setup for TG-QMS system)2. In situ high-resolution X-ray diffraction analysis with high temperature or high hydrogen pressure - Korea Institute of Science and Technology , Republic of Korea3. In situ hydrogen desorption analysis with TG-QMS - Korea Institute of Science and Technology , Republic of Korea4. Nano X-ray Photoelectron Spectroscopy analysis - Pohang Accelerator Laboratory, Republic of Korea5. X-ray spectrometry - Pohang Accelerator Laboratory, Republic of Korea6. ThermoCalc software7. FactSage software8. MatCalc software9. Thermal analysis : DSC (Netzsch), HP-DSC (Netzsch), TGA (Netzsch).10. Gas analysis : QMS (Netzsch)11. X-ray diffractometer (Bruker)12. X-ray Photoelectron Spectroscopy (PHI)13. Gas sorption measurement equipment (Setaram, Micromeritics)14. Machine learning