F. Daouda, J. Hamelin, P. Benard, S. Kumar Natarajan 
Insitut de recherche sur l'hydrogène, Université du Québec à Trois-Rivières, Trois-Rivières, Québec, Canada
We present a novel multi-layered electrode fabrication technique for polymer electrolyte membrane fuel cells (PEMFCs). This method consists of alternate layers of Pt deposition (0.05 mg/cm²) by sputtering on the painted multi-walled carbon-Nafion layer (CNL) with larger concentration of catalyst particles closer to the membrane. Parametric models were developed and validated by experimental ...
R. Pushpangadan, A. Soman, Arundas R., N. G. Thoppan, S. P. Duttagupta
Department of Electrical Engineering, Indian Institute of Technology Bombay, Mumbai, Maharashtra, India
College of Engineering, Munnar, Kerala, India
PEM fuel cells are very promising for portable applications. A key component of fuel cell is the flow field plate through which hydrogen will reach the anode, oxygen will reach the cathode and electron collection. Flow field plate made of silicon is not a good electrical conductor , so electrical contacts has to be attached to the Gas Diffusion Layer (GDL) for taking the power to outside ...
K. Song, and H. Knickle
Department of Chemical Engineering, University of Rhode Island, Kingston Rhode Island, USA
In this paper we present a study of the time dependent analysis of a metal hydride bed (MHB) which provides constant flow to a fuel cell at required power loading and pressure. The hydrogen gas phase pressure, the hydrogen concentration in the metal hydride and the hydrogen desorption rate are consider as key variables in this study. Both the space scale and time scale analysis are performed. ...
Ford Motor Company
Dr. Bernardi is a Research Engineer with Ford Motor Company in Dearborn, MI. Her research focuses on the analysis and simulation of electrochemical energy-storage and conversion systems. In particular, Dr. Bernardi develops mathematical models that predict system behavior and identify governing physicochemical processes. Experimental investigations support model development, analysis, and ...
R. Pushpangadan, S. S. Dimble, and S. P. Duttagupta
A three Dimensional model of the PEM Fuel cell is implemented using COMSOL Multiphysics and the channel width is varied to study the performance.Effect of channel width on the performance of the cell is studied by varying the width of the channel and keeping channel width to rib ratio constant at 1. Rib width is the width of the GDL area which is not covered by the channel. All other parameters ...
Finite Element Analysis of an Enzymatic Biofuel Cell: The Orientations of a chip inside a blood artery
C. Wang, Y. Parikh, Y. Song, and J. Yang
Mechanical & Materials Science Engineering, Florida International University, Miami, Florida, USA
Output performance of an implantable enzymatic biofuel cell (EBFC) with three- dimensional highly dense micro-electrode arrays has been simulated with a finite element analysis approach. The purpose of this research is to optimize the orientation of this EBFC chip inside a blood artery such that the mass transport of glucose around all the micro-electrodes can be improved and hence output ...
A. Nyman, M. Behm, and G. Lindbergh
Applied Electrochemistry, School of Chemical Science and Engineering, Royal Institute of Technology Stockholm, Sweden
Modeling of mass transport is an important step in evaluating lithium-ion battery electrolytes and understanding cell performance. For high-power applications, concentration gradients in the electrolyte lead to limiting currents, which limit the power-density of the battery. The model has been used for determining a complete set of transport and thermodynamic properties for LiPF6 dissolved in an ...
A. K. R. Paul, K. S. Gandhi, and A. K. Shukla
 Central Electrochemical Research Institute – Madras Unit, CSIR Complex, Taramani, Chennai, Tamil Nadu, India
 Department of Chemical Engineering, Indian Institute of Science, Bangalore , Karnataka, India
 Solid State & Structural Chemistry Unit, Indian Institute of Science, Bangalore , Karnataka, India
Direct borohydride fuel cells (DBFCs) use sodium borohydride (NaBH4) as fuel and hydrogen peroxide (H2O2) as an oxidant. A mathematical model encompassing mass balance of ionic species in different regions of the DBFC is developed. Both the oxidation of sodium borohydride and reduction of hydrogen peroxide are assumed to obey Tafel kinetics. This is combined with boundary conditions ...
Malki, B., Baroux, B.
LTPCM/INPG Grenoble, France
Modelling of pit chemistry in applied polarization mode is carried out using finite element method techniques (FEM). The results lead to the formulation of critical conditions for pit stabilization in terms of pit geometry and applied potential. More detailed computing is performed to compare the stability behaviour of both ferritic AISI 430 and austenitic AISI 304 stainless steels. The ...
X. Yang, and G. Zhang[1-3]
 Micro/Nano Bioengineering Laboratory, Department of Biological and Agricultural Engineering, The University of Georgia
 Nanoscale Science and Engineering Center, The University of Georgia
 Faculty of Engineering, The University of Georgia
Affinity-based sensing often relies on the blockage for electron transfer at an electrode surface due to complimentary binding. Such blockage will reduce the electron transfer rate (ETR) in an electrochemical detection method such as electrochemical impedance spectroscopy (EIS) or cyclic voltammogram (CV). To improve the sensitivity of the CV method, we studied the CV performance of ...