Post Li-ion Battery Materials Based on Divalent-Ion (Mg, Zn, Ca) Intercalation Chemistry

Seung-Tae Hong
Daegu Gyeongbuk Institute of Science & Technology(DGIST)
Dec. 1 10:00~10:30


Li ion batteries (LIBs) are one of the most successful energy storage devices for portable electronics application, electrical vehicles, and utility grids. However, there are still strong needs for higher energy density and lower price materials than what the LIB systems can provide. Environmental friendliness, reliability, safety and plentiful sources could be typical advantages of magnesium, zinc and magnesium materials over the lithium. A rechargeable battery utilizing intercalation of divalent ions such as Mg2+, Zn2+ and Ca2+ could be one of the strategies to overcome capacity limit of LIBs, and/or to produce lower price batteries. Mg rechargeable batteries have received attention since the reversible Mg intercalation into the Chevrel phase, Mo6S8, was demonstrated in 2000. Very recently, zinc- or calcium-based rechargeable batteries have also received attention. However, only a limited number of materials have been reported for the successful host materials that can intercalate such divalent ions reversibly. The electrochemical intercalation chemistry is one of emerging research fields for future batteries. In the conference, a recent progress in our exploration for new intercalation chemistry of such divalent ions into various host materials will be presented, utilizing aqueous electrolytes as well as non-aqueous electrolytes.



  • 1991–1994.02, Ph.D., Inorganic Materials Chemistry, Seoul National University (SNU)(Supervisor : Prof. Jin-Ho Choy)
    Thesis: Physicochemical properties of perovskite-related oxides with various dn configurations
  • 1987–1989.02, M.S., Inorganic Solid State Chemistry, SNU (Supervisor : Prof. Jin-Ho Choy)
    Thesis: Preparation and physicochemical characterization of perovskite and scheelite-related oxides
  • 1983-1987.02, B.S. Chemistry, SNU


Professional Career

  • 2012–Present, Associate Professor, Energy Systems Engineering, DGIST (Daegu Kyeongbuk Institute of Science & Technology)
  • 2009-2012.03, Leader of development team for large-scale energy storage (Li-ion technology) and innovative batteries (post-Li ion batteries including magnesium battery)
    LG Chem Research Park, Battery Research & Development
  • 2004-2008.12, Leader of X-ray and inorganic materials analysis & discovery laboratory
    LG Chem Research Park, Corporate Research & Development
  • 2000-2003.12, Senior Research Scientist of Li-ion cathode materials development team
    LG Chem Research Park, Battery Research & Development
  • 1996-1999.12, Post-doc (Supervisor : Prof. John. D. Corbett)
    Dept. of Chemistry, Iowa State Univ. & Ames Laboratory, USA
  • 1994-1996.08, Post-doc (Supervisor : Prof. Arthur W. Sleight)
    Dept. of Chemistry, Oregon State University, USA
  • 1994-1994.09, Researcher, Research Institute for Basic Sciences, SNU
  • 1992.07, Visiting research student, Research Institute for Materials Sciences, Tokyo Institute of Technology, Japan
  • 1990-1991.02, Assistant Researcher
    Research Institute for Basic Sciences, SNU
  • 1988.03-08, 1991.03-08, 1992.03-1993.02, Teaching Assistant, Dept. of Chemistry, SNU
  • 1989.08-1990.02, Army Service, Discharged as a Second Lieutenant