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Dr. Sikha's research interests
are directed towards the understanding of electrochemical power
sources (batteries, fuel cells, capacitors) through mathematical
modeling and experimental analyses. His recent research involves
identification of suitable parallel/series combination of different
electrochemical power sources (hybrid system) to suit the power and
energy requirements of specific applications. His research also
involves theoretical studies on Electrochemical Impedance Spectroscopy
(EIS) and its utility as a tool to identify and understand reaction
mechanisms, transport processes and material degradation in
electrochemical systems.
Research Interests
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Fundamental Modeling of Electrochemical Systems:
Batteries/Fuel Cells/Electrochemical Capacitors and Corrosion
Systems.
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Hybrid Power Sources: Experimental, Modeling and Optimization
studies of the combination of batteries/fuel
cells/capacitors/reformers/power electronics etc. used as hybrid
power source for specific applications.
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Electrochemical Impedance Spectroscopy: Theory and
Experiments-Application to predict degradation of Li-ion batteries.
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Parameter Estimation and Optimization: Using mathematical
approach to estimate parameters and optimize electrochemical
systems.
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Material Synthesis: Electrode preparation and performance
analysis through electrochemical and surface characterization
techniques.
Selected Publications
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Godfrey Sikha and R. E. White, “An
analytical expression for the Impedance Response of an Insertion
Electrode cell”, J. Electrochem. Soc.,154(1), A43
(2007). [PDF]
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Godfrey Sikha, R. E. White and B. N.
Popov, “A Mathematical Model for a Lithium–ion
Battery/Electrochemical capacitor Hybrid System”, J. Electrochem.
Soc.,152(8), A1682 (2005). [PDF]
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Godfrey Sikha, B. N. Popov and R. E.
White, “Effect of Porosity on the Capacity Fade of a Lithium Ion
Battery: Theory”, J. Electrochem. Soc.,151 (7), A1104
(2004). [PDF]
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Godfrey Sikha and Branko N. Popov,
“Performance Optimization of a Battery–Capacitor Hybrid System”,
J. Power Sources, 134, 130 (2004). [PDF]
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Godfrey Sikha, P. Ramadass, B. Haran, R.
E. White and Branko N. Popov, “Comparison of the Capacity Fade of
Sony US 18650 cells charged with different protocols”, J. Power
Sources, 122 (1), 67 (2003).[PDF]
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