Yang-Kook Sun

Research Professor of Chemical Engineering

Office:
Phone: 312.567.5111
Fax: 312.567.8874
Email: ysun5@iit.edu
Web:

Expertise

Education

• M.S. from Seoul National University (Mat. Sci., 1985)
• Ph. D. form Seoul National University (Mat. Sci., 1992)

Research

Current Projects

Awards/Honors

Patents

• “A process for prepararing cathode active material by a sol-gel method”, Y. K. Sun, S. H. Jin, USP 591409 (1999).
• “Methods of preparaing cathode materials for lithium secondary batteries”, Y. K. Sun, Y.-R. Kim, K.-S. Kim, D.-W. Kim, JP 3007066 (1999).
• “Methods of preparaing cathode materials for lithium secondary batteries”, Y. K. Sun, Y.-R. Kim, K.-S. Kim, D.-W. Kim, USP 6071489 (2000).
• “Methods of preparaing lithium ion polymer battery”, D.-W. Kim, Y.-R. Kim, Y. K. Sun, B.K. Oh, C.-W.- Baik, JP 3080227 (2000).
• “Methods of preparaing lithium ion polymer battery”, Inventor: D.-W. Kim, Y.-R. Kim, Y. K. Sun, B.K. Oh, C.-W.- Baik, USP 6268087 (2001).
• “Electrode active materials for lithium secondary batteries, method for preparaing the same, and lithium battries using the same”, Y. K. Sun, S.H. Park, PCT KR2002/01786 (2002).
• “Method for producing lithium composite oxide for use as positive electrode active material for lithium secondary batteries”, Inventor: Y. K. Sun, PCT KR2004/001006 (2004).
• “Cathode active material for lithium secondary battery, processing the same and for use in the same process”, Y. K. Sun, M.H. Lee, Y.J. Kang, K.H. Kim, PCT KR2004/002980 (2004).
• “Double-layer cathode active materials for lithium secondary batteries, method for preparaing the active materials, and lithium secondary batteries using the active materials”, Inventor: Y. K. Sun, M.-H. kim, H.-S. Shin,PCT KR2005/001193 (2005).
• “3V class spinel complex oxides as cathode active materials for lithium secondary batteries, method for preparaing the same by carbonate coprecipitation, and lithium secondary using the same”, Y. K. Sun, S.H. Park, S.W. Oh, PCT KR2005/003195 (2005).
• “Surface treated cathode active material and its manufacturing method”, Y. K. Sun, J.-M. Han, PCT KR2006/00987 (2006).
• “Process of precipitation for spheric manganese carbonate and the products produced thereby”, Y. K. Sun, D. K. Lee, S.H. Park, PCT KR2006/001170 (2006).
• “Layered core-shell cathode active materials for lithium secondary batteries, method for preparaing thereof and lithium secondary batteries using the same”, Y. K. Sun, D. K. Lee, S.H. Park, PCT KR2006/001201 (2006).
• “Positive active material for lithium battery, Method of preparaing the same, and lithium battery including the samee”, Y. K. Sun, B.C. Park , PCT KR2006/005767 (2006) .

Books

Selected Publications

Synthesis and Electrochemical Properties of Li[Ni0.45Co0.1Mn0.45-xZrx]O2 (x=0, 0.02) via co-precipitation Method, H. J. Bang, B.-C. Park, J. Prakash and Y. -K. Sun, J. of Power Sources, 174, 565-568 (2007).

Effect of AlF3 Coating Amount on High Voltage Cycling Performances of LiCoO2, Y.-K. Sun, S.-W. Cho, S.-T. Myung, K. Amine, I. Belharouak, and Jai Prakash, Electrochimica Acta, 53, 1013-1019 (2007).

Improvement of Electrochemical Performances of Li[Ni0.8Co0.1Mn0.1]O2 Cathode Materials by Fluorine Substitution, S.-W. Woo, B.-C. Park, C. S. Yoon, S.-T. Myung, Jai Prakash, and Y.-K. Sun, J. of Electrochem. Soc., 154, A649-A655 (2007).

Structural transformation of Li[Ni0.5-xCo2xMn0.5-x]O2 (2x ≤ 0.1) during High Voltage Cycling (4.5 V), B.-C. Park, H. J. Bang, C. S. Yoon, S.-T. Myung, Jai Prakash, and Y.-K. Sun, J. of Electrochem. Soc., 154, A520-A526 (2007).

Microwaves Synthesis of Spherical Li[Ni0.4Co0.2Mn0.4]O2 Powders as a Positive Electrode Material for Lithium Batteries, Ki-Soo Lee, Seung-Taek Myung, and Yang-Kook Sun, Chem. Mater., 19, 2727-2729 (2007).

High capacity Li[Li0.2Ni0.2Mn0.6]O2 cathode materials via carbonate co-precipitation method, D.-K. Lee, S.-H. Park, K. Amine, H J Bang, J. Prakash, and Y.-K. Sun, J. of Power Sources, 162(2), 1346-1350 (2006).

Hydrothermal synthesis of nano-sized anatase TiO2 powders for lithium secondary anode materials, Sung Woo Oh, Sang-Ho Park and Yang-Kook Sun, Journal of Power Sources, 161, 1314-1318 (2006).

Improved Electrochemical Cycling Behavior of ZnO-coated Li1.05Al0.1Mn1.85O3.95F0.05 Spinel at 55 oC, Jung-Min Han, Seung-Taek Myung, Yang-Kook Sun, J. of Electrochem. Soc., 153, A1290-A1295 (2006).

Significant Improvement of High Voltage Cycling Behavior AlF3-Coated LiCoO2 Cathode, Y.-K. Sun, J.-M. Han, S.-T. Myung, S.W. Lee, and K. Amine, Electrochem. Commun., 8, 821-826 (2006).

Novel Core-shell Structured Li[(Ni0.8Co0.2)0.8(Ni0.5Mn0.5)0.2]O2 via Coprecipitation as Positive Electrode Material for Lithium Secondary Batteries, Yang-Kook Sun, Seoung-Taek Myung, Ho-Suk Shin, Young Chan Bae, and Chong Seong Yoon, J. of Phy. Chem. B,. 110, 6810-6815 (2006).

Low-Temperature Synthesis of LixMn0.67Ni0.33O2 (0.2 < x < 0.33) Nanowires with a Hexagonal Layered Structure, Dae Hoon Park, Seung Tae Lim, Seong-Ju Hwang, Chong-Seung Yoon, Yang-Kook Sun, and Jin-Ho Choy, Adv. Mater., 17, 2834–2837 (2005).

Synthesis and Characterization of Li[(Ni0.8Co0.1Mn0.1)0.8(Ni0.5Mn0.5)0.2]O2 with the Micro-scale Core-shell Structure as the Positive Electrode Material for Lithium Batteries”, Yang-Kook Sun, Seung-Taek Myung, Myung-Hoon Kim, Jai Prakash, and Khalil Amine, Journal of the American Chemical Society, 127, 13411-13418 (2005).

Improvement of High-Voltage Cycling Behavior of Surface-Modified Li[Ni1/3Co1/3Mn1/3]O2 Cathodes by Fluorine Substitution for Li-Ion Batteries, G..-H. Kim, J.-H. Kim, S.-T. Myung, K. Amine, and Y.-K. Sun, J. Electrochem. Soc., 152, A1707-A1713 (2005).

X-ray absorption spectroscopic investigation of metal-oxygen bond covalency for charge compensation in Li-ion battery cathode Li[Ni1/3Co1/3Mn1/3]O2 material, M.G. Kim, H.J. Shin. J.-H. Kim, S.H. Park, Y.-K. Sun, J. of Electrochem. Soc., 152, A1320-A1328 (2005).

LiNi0.5Mn1.5O4 showing reversible phase transition on 3 V Region, S.-H. Park, S.-W. Oh, C.S. Yoon, S.-T. Myung, and Y.-K. Sun, Electrochemical & Solid State Letters, 8, A163-A167 (2005).

In-situ Studies of LixMn2O4 and LiAl0.17Mn1.83O3.97S0.03 Cathode By Isothermal Micro Calorimetery, H.J. Bang, Y.-K. Sun, Jai Prakash, J. Electrochem. Soc., 152, A421-428 (2005).

Improved electrochemical performance of Li-doped natural graphite anode for lithium secondary batteries, Young Tae Lee, Chong Seung Yoon, and Yang-Kook Sun, J. of Power Sources, 139, 230-234 (2005).

Synthetic Optimization of Li[Ni1/3Co1/3Mn1/3]O2 via Co-precipitation, M.-H. Lee, Y.-J. Kang, S.-T. Myung, and Y.-K. Sun, Electrochimica Acta., 50. 939-948 (2004).

Synthesis and Electrochemical Properties of Li[Ni1/3Co1/3Mn(1/3-x)Mgx]O2-yFy via Coprecipitation, G.-H. Kim, S.-T. Myung, H. J. Bang, Jai Prakash, and Y.-K. Sun, Electrochemical & Solid State Letters, 7, A477-A480 (2004).

Effect of Ti Substitution for Mn on the Structure of LiNi0.5Mn1.5-xTixO4 and Their Electrochemical Properties as Lithium Intercalation Material, J.-H. Kim, S.-T. Myung, C. S. Yoon, I.-H. Oh, and Y.-K. Sun, J. Electrochem. Soc., 15, A1911-1918 (2004).

Comparative study of LiNi0.5Mn1.5O4 cathodes having two crystallographic structures: Fd3m and P4332, J.-H. Kim, S.T. Myung, C.S. Yoon, S.G. Kang, and Y.-K. Sun, Chemistry of Materials, 16, 906-914 (2004).

The Effect of ZnO Coating on Electrochemical Cycling Behavior of Spinel LiMn2O4 Cathode Materials at Elevated Temperature, Y.-K. Sun, K.-J. Hong, and Jai Prakash, J. Electrochem. Soc., 150(7), A970-972 (2003).

Structural Characterization of Li[Li0.1Ni0.35Mn0.55]O2 Cathode Material for Lithium Secondary Batteries, J.-H. Kim, C.S. Yoon, and Y.-K. Sun, J. Electrochem. Soc., 150, A538-542 (2003).

Synthesis and electrochemical properties of sulfur doped Li0.7MnO2-ySy material for lithium secondary batteries, S.H. park, Y.S. Lee and Y.-K. Sun, Electrochemistry Communications, 5, 124-128 (2003).

Surface structural change of ZnO-coated LiNi0.5Mn1.5O4 spinel as 5 V cathode materials at elevated temperature, Y.-K. Sun, C.S. Yoon, and I.-H. Oh, Eelectrochimca Acta, 48, 503-506 (2003).

Professional Society Memberships