Magnesium and Zinc Ion Host Materials for Post Li Ion Battery

Seung-Tae Hong
Seung-Tae Hong
DGIST, Korea
15:00~15:45, November 21st, 2014

Abstract :

Li ion batteries (LIB) 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 and zinc materials over the lithium. A rechargeable battery utilizing intercalation of divalent ions such as Mg2+ and Zn2+ could be one of the strategies to overcome capacity limit of LIB, 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-based rechargeable batteries have also received attention. However, only a few materials have been reported for the successful host materials that can intercalate such divalent ions reversibly. The electrochemical intercalation chemistry is one of newly 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.


Research Interests

  • Multivalent (Mg2+, Zn2+, Al3+) and Na+ ion battery materials
  • Solid state ionic conductors (Li+, Na+)
  • Solid state chemistry
  • X-ray and neutron crystallography
  • Phosphor materials for White LED application


Professional Career

  • 2012 – present : Associate Professor, DGIST, Korea
  • 2000 – 2012 : Project Leader, Battery R&D, LG Chem Research Park, Korea
  • 1996 – 1999 : Research Associate, Dept. of Chemistry, Iowa State Univ. & Ames Laboratory, USA
  • 1994 – 1996 : Research Associate, Dept. of Chemistry, Oregon State University, USA