Synthesis, chemical and electrochemical characterization of novel electrode materials for batteries and fuel cells. Understanding the mechanisms and structural by chemical, electrochemical, and spectroscopic techniques. Morphological characterization by BET area, particle-size distribution, porosimetry, X-ray diffraction, SIMS, SEM, EDS techniques.
Rechargeable battery systems such as nickel-metal hydride, Li-ion, and Li-polymer. Diagnostic studies of rechargeable batteries AC impedance, area-specific impedance analysis, CV, pressure-heat measurements during cell cycling and correlation with calorimetric studies. Performance evaluation under constant current, dynamic stress tests (DST) and pulse discharge. Failure mechanisms using XRD, SEM, EDS, and electrochemical techniques.
Development of aqueous and nonaqueous electrochemical double layer and galvanic capacitors for high power applications.
Kinetics of oxygen reduction and generation on electrode surface by AC impedance, rotating disk and rotating ring disk methods.
"A Novel Flame-Retardant Additive for Li-ion Batteries," Jai Prakash and Chang-Woo Lee, U.S. Patent, No. 6,455,200 (2002).
"Nickel Metal Hydride Cells Designed for High Rate/Low Temperature Performance, U.S. Patent No. 6,287,724 (2001).
"Method and Device for Enhancing Smart Battery Performance," R. Hudson, S. Rahman, T. Thayer, J. Prakash, and N. Banes, U.S. Patent No. 6,023,151 (2000).
"A New Pseudo-Capacitor Device for Aqueous Electrolytes," J. Prakash, M. Thackeray, D. Dees, D. R. Vissers, and K. M. Myles, U.S. Patent No. 5,841,627 (1998).
"High Power Sodium/Metal Chloride Batteries," L. Redey, D. R. Vissers, J. Prakash, and K. M. Myles, U.S. Patent No. 5,536,593 (1996).
"Improved Sodium/Nickel Chloride Cells," L. Redey, D. R. Vissers, J. Prakash, and K. M. Myles, U.S. Patent No. 5,532,078 (1996).
"Electrochemical Cell, Bromine or Iodine Containing Additives Incorporated During Charging to Improve Cell Capacity or Power," L. Redey, D. R. Vissers, and J. Prakash, U.S. Patent No. 5,340,668 (1994).
"Electrochemical Cell," L. Redey, D. R. Vissers, and J. Prakash, U.S. Patent No. 5,283,135 (1994).
"The effects of metal ions (Ni, Mn, and Co) on the structural and thermal stabilities of Ni-rich Li[Ni1-x-yCoxMny]O2 studied by in-situ high temperature XRD", Yang-Kook Sun, H. J. Bang, Dong-Hui Kim, Young Chan Bae, and Jai Prakash, Journal of the Electrochemical Society 155 (12), pp. A952-A958
“Analysis of the Galvanostatic Intermittent Titration Technique (GITT) as Applied to a Lithium-Ion Porous Electrode,” Dennis Dees, Shigehiro Kawauchi, Daniel Abraham, and Jai Prakash, Journal of Power Sources, (Available online)
“Optimization of microwave synthesis of Li[Ni0.4Co0.2Mn0.4]O2 as a positive electrode material for lithium batteries,” K. Lee, S. Myung, J. Prakash, H. Yashiro, and Y.K. Sun, Electrochmi. Acta, 53 (2008) 3065.
“Electrochemical and thermal characterization of AlF3 coated Li[Ni0.8Co0.15Al0.05]O2 cathode in Li-ion cells, H. Kim, B. Park, S. Myung, K. Amine, J. Prakash, and Y. K. Sun, J. Power Sources, 179 (2008) 347.
“Improvement of Electrochemical Performance of Li[Ni0.8Co0.15Al0.05]O2 Cathode Materials by AlF3 coating at Various Temperatures” Byung-Chun Park, Hyung-Bae Kim, Hyun Joo Bang, Jai Prakash, and Yang-Kook Sun, Ind. Eng. Chem. Res. 47, (2008) 3876.
“Comparative study of Li[Ni1/3Co1/3Mn1/3]O2 cathode material synthesized via different synthetic routes for asymmetric electrochemical capacitor applications, J.-H. Yoon, H.J. Bang, Jai Prakash, Y.-K. Sun, Materials Chemistry and Physics 110 (2008) 222–227.
Electrochemical modeling of Li-ion positive electrodes during hybrid pulse power characterization tests, Dennis Dees, E. Gunen, D. Abraham, A. Jansen, and J. Prakash, J. of Electrochem. Soc., 155(8), A603, 2008.
A Model for the Electroreduction of Molecular Oxygen, W.E. Mustain and J. Prakash, J. Electrochem. Soc, 154, A668 (2007).
“Kinetics and Mechanism for the Oxygen Reduction Reaction on Polycrystalline Cobalt-Palladium Electrocatalysts in Acid Media,” W.E. Mustain and J. Prakash, J. Power Sources, 170, 28 (2007).
“A Novel Flow Field Design for the Effective Water Transport in Polymer Electrolyte Fuel Cells,” Shabab Amiruddin, Bing Li, and Jai Prakash, ECS Trans. 11, 703 (2007).
“Kinetic studies of Oxygen Reduction Reaction on Palladium-Nickel Alloy,” Bing Li, Shabab Amiruddin, and Jai Prakash, ECS Trans. 11, 235 (2007).
“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. Power Sources, 174, 565 (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. Electrochem. Soc., 154 (7) A649-A655 (2007).
“Synthesis and Electrochemical properties of spherical spinel Li1.05M0.05Mn1.9O4 (M = Mg and Al) as a cathode material for lithium ion batteries by co-precipitation method,” K.-S. Lee, H.J. Bang, S.-T. Myung, J. Prakash, K. Amine and Y.-K. Sun, J. Power Sources, 174, 726 (2007).
“Thermal and Electrochemical investigations of MCMB/LiNi1/3Co1/3Mn1/3O2 using LiBoB as an Electrolyte Additive,” W. Lu, Z. Chen, H. Joachin, Jai Prakash, and K. Amine, J. Power Sources, 163, 1074 (2007).
“Structural transformation of Li[Ni0.5-xCo2xMn0.5-x]O2 (2x<0.1) charged in high voltage range (4.5 V),” B. Park, H. Bang, C. Yoon, S. Myung, J. Prakash, and Y. K. Sun, J. Electrochem. Soc., 154(6), A520 (2007).
“CoPdx Oxygen Reduction Electrocatalysts for Polymer Electrolyte Membrane and Direct Methanol Fuel Cells,” W.E. Mustain, K. Kepler and J. Prakash, Electrochim. Acta, 52, 2102 (2006).
“Effect of sulfur doping on morphology and electrochemical performance of LiNi0.5Mn1.5O4-x spinel material in 3V region,” Yang -Kook Sun, Sung Woo Oh, and Chong Seung Yoon, H. Bang, and J. Prakash, J. Power Sources, 161, 19 (2006).
“Hydrogen Sorption on Palladium-doped sepiolite carbon nanofibers,” C. Back, G. Sandi, J. Hranisavljevic, and J. Prakash, J. Phys. Chem. B., 110, 16225 (2006).
“Investigations of Carbon-Supported CoPd3 Catalysts as Oxygen Cathodes in PEM Fuel Cells,” W. E. Mustain, Keith Kepler, Jai Prakash, Electrochemistry Communications, 8-3, 406 (2006).
“A Review of Li-ion Cell Chemistries and their Potential use as Hybrid Electric Vehicles,” H. Yang, S. Amiruddin, H. J. Bang, Y.-K. Sun, and J. Prakash, J. Ind. Eng. Chem., 12(1), 12-38 (2006).
“Electrochemical performance of spherical 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. Power Sources, 162(2), 1346 (2006).
“Contribution of the Structural Changes of LiNi0.8Co0.15Al0.05O2 Cathode on the Exothermic Reactions in Li-ion Cells,” H. Bang, H. Joachin, H. Yang, K. Amine, Jai Prakash, J. Electrochem. Soc., 153 4 A731-A737 (2006).
“Determination of the Reversible and Irreversible Heats of LiNi0.8Co0.2O2/Mesocarbon Microbead Li-ion Cell Reactions using Isothermal Microcalorimetery,” Wenquan Lu, Hui Yang, and Jai Prakash, Electrochim. Acta, 51(7), 1322-1329 (2006).