Doo Young Kim
1. Advanced catalyst support material for polymer exchange membrane fuel cells (PEMFCs)
Limited lifetime of Pt electrocatalyst and the deterioration of catalytic activity during the extended running cycles are the critical hurdles for launching PEMFC in the commercial market, especially in the transportation application. Our approach to improve catalyst durability is to develop the alternative and efficient catalyst support materials. We will develop non-traditional sp3-bonded carbon (conductive diamond) and metal oxide materials and will characterize using a variety of methods including X-ray diffraction, Raman spectroscopy, electron microscopy, and electrochemical test.
2. Efficient energy storage devices such as supercapacitor and batteries.
We will pursue the research to develop highly efficient energy storage materials with high energy/power densities and high cyclic stability. We will carry out the research with a variety of carbon materials (graphene nanoplatelets (GNP), sp3-bonded carbon (diamond & diamond-like carbon)), which can be further modified with conductive polymers to give the pseudo-capacitance. We are also interested in modifying the electrode surface and interface via electrochemical method in order to tailor the electronic and electrochemical properties.
3. Neuroscience and electrochemistry.
To detect the release or uptake of neurotransmitter in biological tissue (e.g. brain tissue) are important research area and critical for understanding the metabolism and development of related drugs. Electrochemical method is a powerful method of identifying and quantifying the neurotransmitters. We will pursue the research to develop the microelectrode with high selectivity and sensitivity, together with spectroscopic method.
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Liang Guo, Kim, Doo Young, Grace Muna, Prerna Sonthalia, Ka Leng Soh, Weng Poo Kang, Jimmy L. Davidson, and Greg M. Swain. “The Electroactivity of Diamond Microelectrode Arrays for Ru(NH3)6+3/+2 and Fe(CN)6-3/-4 and Their Characterization by Scanning Electrochemical Microscopy”, submitted
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Kim, Doo Young; Yang, Juchan; Kim, Hyoun Woo; Swain, Greg M.“Voltammetric and Capacitance Behavior of sp3 and sp2 Carbon Powders: A Comparison of an Aqueous Electrolyte and an Ionic Liquid”, submitted
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Kim, Doo Young; Wang, Jian; Yang, Juchan, Kim, Hyoun Woo; Swain, Greg M.,“Electrolyte and Temperature Effects on the Electron Transfer Kinetics of Fe(CN)6-3/-4 at Boron-Doped Diamond Thin Film Electrodes”, J. Phys. Chem. C (2011), 115(20), 10026
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Sasaki, Isao; Swope, Vernon M.; Ay, Ayten; Kim, Doo Young; Swain, G. M. “Microstructureal Stability of Electrically Conducting Diamond Powder during Potentiostatic Polarization in Aqueous Acid as Probed Using Electrochemical Methods and In Situ Raman Spectroscopy” J. Electrochem. Soc. (2011) accepted for publication
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Hyoun Woo Kim, Hyo Sung Kim, Han Gil Na, Ju Chan Yang, Rino Choi, Jae Kyeong Jeong, Chongmu Lee, Kim, Doo Young“One-step fabrication and characterization of silica-sheathed ITO nanowire” Journal of Solid State Chemistry, (2010), 183, 249
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Kim, Doo Young; Merzougui, Belabbes; Swain, Greg M., “Preparation and Characterization of Glassy Carbon Powder Modified with a Thin Layer of Boron-Doped Ultrananocrystalline Diamond (B-UNCD)”, Chemistry of Materials (2009),21(13), 270
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Kim, Doo Young; Grey, John K.;Barbara, Paul F. “A Bimodal Density of States for Conjugated Polymers”, Synthetic Metals (2006),156(2-4), 33
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Lee, Young Jong; Kim, Doo Young; Barbara, Paul F.,“Effect of Sample Preparation andExcitation Conditions on the Single Molecule Spectroscopy of Conjugated Polymers”Journal of Physical Chemistry B (2006), 110(20), 9739.
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Grey, John K.; Kim, Doo Young; Lee, Young Jong; Gutierrez, Jose J.; Luong, Nam; Ferraris, John P.; Barbara, Paul F., “Single Molecule Studies of Electronic Energy Transfer in a Diblock Conjugated Polymer”Angew. Chem. Int. Ed. (2005), 44(38), 6207.
