On the global demands of high power, high electrochemical energy storage and conversion technologies, efforts of developing commercially-viable fuel cells (FC) greatly prevailed for several decades. However, during the recent 10 years or so, the FC developers one by one, have perished or suspended their effort, particularly for portable applications while the efforts of developing new electrode materials for lithium-ion batteries (LIB) and even new rechargeable battery chemistry are still flourishing strong due to the prospect of more ubiquitous applications not only in powering consumer electronics but also in EVs, HEVs and even Grid-scale power plants.
In this presentation, fuel cells and rechargeable batteries are compared, and on-going efforts in developing new battery chemistries are briefly mentioned. Some results from the research activities in the portable power at Duracell will be also discussed.
- PhD, Electrochemistry, Case Western Reserve University, Cleveland, Ohio, USA
- MS, Physical Chemistry, Seoul National University, Seoul, Korea
- BS, Chemistry, Seoul National University, Seoul, Korea
- 2017-Present, Electrochemical Energy Science, LLC: Founder; consulting in disposable and rechargeable consumer battery technologies; research and development in new battery chemistries. (currently on leave: Brain Pool Program by KOFST, LIB materials research at Sungkyunkwan University, July 1 – December 31, 2017)
- 2000-2016, Duracell Technology Center: Principal Scientist/Program manager on development of new Li-ion battery materials, advanced alkaline batteries, metal-air platforms and battery modeling/simulations; monitoring/evaluating external technologies on electrochemical energy storage/conversion and other portable power technologies including fuel cell programs on both PEMFC and DMFC systems; consulting executive management on global R&D programs. During this tenure, developed specialty battery pack for pregnancy test kit P&G Clearblue® (2008), optimized charging circuit for household product Swiffer® (2007). Participated in advancing Duracell 9V battery pack safety (2007), developed decomposition filters for emission gases from DMFCs (2004), led high throughput computational/experimental battery material screening efforts (2006), developed new catalysts for zinc-air batteries (2002), led alkaline battery model development (2010), involved in new alkaline product development (Duralock and Quantum 2013), developed a Li-MnO2 button cell safety device (2015), electrochemical voltage conversion (2016) and transformative battery materials (2016). Acquired many training on R&D program and team management. Also served as a review panel members for many DOE funding programs in previous years.
- 1998-2000, T/J Technologies (division of former A123): PI in multi-million dollar NSF, DOE and NIST programs on nano-materials for Li-ion batteries and fuel cell catalysts.
- 1992-1998, Case Western Reserve University: Research faculty/Instructor, co-PI in DOE and DOD programs on DMFCs (PBI-based MEAs), nonlinear optics (SHG and SFG) for metal-solution interfaces and passive film characterization on Li metal surface, correlating electrolyte conductivity and dielectric properties of solvents for Li-ion batteries, structure/phase of NiOOH and its cycle life for rechargeable Ni-MH batteries. Established the methodology of in situ x-ray absorption spectroscopy based on synchrotron x-ray. Consultants for Energizer and Rayovac corporations. Taught Physical Chemistry both lecture and laboratory classes. Guided many PhD students.
- 1989-1992, British Petroleum Research, America (former Standard Oil): developed nonlinear optical methods (SHG and SFG) for in situ studies of catalytic reaction at gas/solid and solution/solid interfaces. Continuum generation by optical compression of chirped pulses.
Awards and Honors
- 2017, Awardee of “Brain Pool” administrated by Korea Federation of Science and Technology
- 2010, Elected for “Scientist in Industry”, ULTRA program, Korean Federation of Science and Technology Societies
- 1996-1997, The Electrochemical Society (ECS), Cleveland Section Chairman (1997) and Vice Chairman (1996)
- 1994-1995, Korean Scientists and Engineers Association, Ohio Chapter, Chairman (1995) and Vice Chairman (1994)
- Organized and chaired ECS symposia; many invited seminars at international conferences, universities and national labs
- 60+ publications in peer-reviewed journals and 12 patents in batteries and fuel cells. Lists of publications and patents are available upon request