Sharif Digital Repository

A new approach to optimize the operating conditions of a polymer electrolyte membrane fuel cell based on degradation mechanisms

Author

Roshandel, R.

Pub. Year

2013

Subjects

Degradation model. / Energy systems. / Operation condition. / Optimization. / PEM fuel cell. / Internal and external factors. / Operation conditions. / Optimizing the operating conditions. / Polymer electrolyte membranes. / Stationary applications. / Catalysts. / Degradation. / Impurities. / Proton exchange membrane fuel cells (PEMFC)

Effects of catalyst loading gradient in catalyst layers on performance of polymer electrolyte membrane fuel cells

Author

Roshandel, R.

Pub. Year

2013

Subjects

Modeling. / Non-uniform catalyst. / Agglomerate. / Analytical approach. / Analytical investigations. / Analytical results. / Catalyst layers. / Catalyst loadings. / Catalyst utilization. / Channel directions. / Effect of catalyst. / Experimental validations. / Fuel cell performance. / Fuel cell tests. / Gas diffusion layers. / Land areas. / PEM fuel cell. / Power densities. / Two directions. / Catalysts. / Electrolytes. / Fuel cells. / Models. / Proton exchange membrane fuel cells (PEMFC) / Loading. / Catalyst. / Electrode. / Fuel cell. / Membrane. / Performance assessment. / Polymer.

Degradation based optimization framework for long term applications of energy systems, case study: Solid oxide fuel cell stacks

Author

Roshandel, R.

Publisher

Elsevier Ltd,

Pub. Year

2016

Subjects

DBO (Degradation based optimization) / Degradation cost. / Lifetime profit. / Operating conditions. / Solid oxide fuel cell.

The effects of non-uniform distribution of catalyst loading on polymer electrolyte membrane fuel cell performance

Author

Roshandel, R.

Pub. Year

2007

Subjects

Catalyst activity. / Computer simulation. / Electric currents. / Electrochemical cells. / Porosity. / Catalyst layers. / Electrochemical reactions. / Gas diffusion layers (GDL) / Polymer electrolyte membrane. / Spherical agglomerate models. / Proton exchange membrane fuel cells (PEMFC)

Numerical simulation of non-uniform Gas diffusion layer porosity effect on polymer electrolyte membrane fuel cell performance

Author

Roshandel, R.

Publisher

Materials and Energy Research Center,

Pub. Year

2007

Subjects

Catalysis. / Catalysts. / Cell membranes. / Direct methanol fuel cells (DMFC) / Electrochemistry. / Electrolysis. / Gases. / Membranes. / Polyelectrolytes. / Polymers. / Porosity. / Proton exchange membrane fuel cells (PEMFC) / Simulators. / Applied pressure. / Catalyst layers. / Catalyst loadings. / Cell performance. / Electrical current. / Essential component. / Experimental data. / Gas diffusion layer. / Gas diffusion layers. / Mass transport. / Nonuniform. / Numerical simulation. / Polymer electrolyte. / Polymer electrolyte membrane fuel cells. / Porosity effect. / Porosity variations. / Reactant concentrations. / Simulation. / Two-dimensional mathematical models. / Water generation. / Diffusion in gases.

The effect of variable catalyst loading in electrodes on PEM fuel cell performance

Author

Roshandel, R.

Publisher

American Society of Mechanical Engineers,

Pub. Year

2005

Subjects

Catalysts. / Concentration (process) / Current density. / Electrodes. / Osmosis membranes. / Performance. / Catalyst loading. / Cathode catalyst layers. / Electrochemical reactions. / Proton exchange membrane (PEM) / Fuel cells.