L. Lam, and R. Darling
University of Washington
Many physical systems contain sequential modes of operation. The sequence is one-way and switching between modes is dependent upon specific internal parameters of the system itself. While COMSOL provides the flexibility to perform time-domain simulation and time-based modifications of boundary conditions, simulating sequential systems based upon internal physical variables in COMSOL can be a ...
M. N. Nandanwar, S. K. Gupta
Indian Institute of Science, Bangalore, India
Failure of conventional lead-acid battery is attributed to degradation of solid active mass (PbO2 and PbSO4 ). A number of research efforts are underway worldwide to overcome degradation of active mass to improve the cycle life of lead-acid batteries. Soluble lead-acid flow battery (SLFB) is a new kind of lead-acid flow battery in which products of discharge remain in dissolved state. SLFB ...
Ziegler, C., Tranitz, M., Schumacher, J.O.
Fraunhofer Institute for Solar Energy Systems, Freiburg, Germany
A mathematical model of planar self-breathing fuel cells is developed and validated. The geometry of the model is a two-dimensional symmetric element of a planar self-breathing fuel cell. The multicomponent transport of the species is considered as well as the couplings between the transport processes of heat, charge, and mass, and the electrochemical reactions. The cell model is validated ...
Department of Chemistry, University of Firenze, Sesto Fiorentino, FI, Italy
Microelectrodes demonstrate that modeling is crucial for understanding the behavior of complex electrochemical systems. The use of the finite element methods in electrochemistry may be of much more general interest for its ability to handle complex geometries. In this context a software such as COMSOL Multiphysics® allows a straightforward way to the set up models including coupling of ...
Simulating Performance and Species Crossover in a Vanadium Redox Flow Battery using COMSOL Multiphysics
E. Agar, K. Knehr, C. Dennison, and E. Kumbur
Electrochemical Energy Systems Lab.
Dept. of Mechanical Eng. and Mechanics
Vanadium redox flow batteries (VRBs) are a promising new energy storage technology designed for use in long term applications such as uninterruptible power supply and coupling with renewable energy sources (i.e. wind and solar). Crossover is the undesired transport of vanadium ions through the ion exchange membrane during operation and is a major factor limiting the overall efficiency and ...
B. Bozzini, S. Maci, I. Sgura, R. Lo Presti, and E. Simonetti
Dipartimento di Ingegneria dell’Innovazione, Università del Salento, Lecce, Italy
Dipartimento di Matematica, Università del Salento, Lecce, Italy
ENEA Casaccia, Dipartimento TER, Centro Ricerche Casaccia, S. Maria di Galeria, Roma, Italy
This paper describes the numerical modeling of a key material-stability issue within the realm of Molten Carbonate Fuel Cells (MCFC). The model describes the morphological and attending electrocatalytic evolution of porous NiO electrodes and is apt to predict electrochemical observables that can be recorded during Fuel Cell operation. The model has been validated with original experimental data ...
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 ...
E. M. Fontes
Catella Generics AB
Computational mathematical modeling has allowed scientists and engineers to perform better, faster, and more economical virtual experiments. Through mathematical modeling, an application expert can simulate performance characteristics during different operating conditions and thereby accelerate the pace of understanding new electrochemical system in relation to specific application ...
Modeling of Next Generation Energy Systems by Using COMSOL: Fuel Cell, High Power Lithium Ion Battery, and Dye-Sensitized Solar Cell
Samsung SDI CAE Team
In this presentation we present methods for modeling alternative energy sources such as Fuel Cells and Solar Cells. The presentation also considers aspects of the modern world and what impact the high consuming of energy sources will have on tomorrow's society. This presentation is written in Korean. --------------------------------- Keynote speaker's biography: Jake Kim received ...
Numerical Modeling of the Electrochemical Behaviour of Metallic Alloys based upon Experimental Measurements at the Macro- and Microscale
H. Krawiec1, V. Vignal2, and R. Akid3
1AGH University of Science and Technology, Krakow, Poland
2ICB, UMR 5209 CNRS, Université de Bourgogne, Dijon, France
3Sheffield Hallam University, Sheffield, UK
Micro capillary-based techniques allow the interrogation of single metallurgical sites and are therefore becoming increasingly popular for the investigation of the electrochemical behavior of metallic phases and non-metallic heterogeneities in alloys. This study was carried out to assess the differences between current measurements made using a 'closed' micro-capillary system (the electrochemical ...