Nonlinear dynamic mechanism modeling of a polymer electrolyte membrane fuel cell with dead-ended anode considering mass transport and actuator properties

2018 ◽  
Vol 230 ◽  
pp. 106-121 ◽  
Author(s):  
Liangfei Xu ◽  
Chuan Fang ◽  
Jianqiu Li ◽  
Minggao Ouyang ◽  
Werner Lehnert
Keyword(s):  
Fuel Cell ◽  
Mass Transport ◽  
Polymer Electrolyte ◽  
Nonlinear Dynamic ◽  
Polymer Electrolyte Membrane ◽  
Dynamic Mechanism ◽  
Electrolyte Membrane ◽  
Mechanism Modeling

Sensitivity of Thermal Transport and Phase-Change in Thin Porous Layers to the Distribution of the Solid Matrix

2013 ◽  
Author(s):  
Vinaykumar Konduru ◽  
Ezequiel Medici ◽  
Jeffrey S. Allen
Keyword(s):  
Fuel Cell ◽  
Mass Transport ◽  
Polymer Electrolyte ◽  
Solid Phase ◽  
Polymer Electrolyte Membrane ◽  
Operating Conditions ◽  
Transport Layer ◽  
Solid Matrix ◽  
High Water Content ◽  
Electrolyte Membrane

Understanding the water transport in the Porous Transport Layer (PTL) is important to improve the operational performance of polymer electrolyte membrane fuel cells (PEMFC). High water content in the PTL and flow channel decreases the transport of the gas reactants to the polymer electrolyte membrane. Dry operating conditions result in increased ohmic resistance of the polymer electrolyte membrane. Both cases result in decreased fuel cell performance. Multi-phase flow in the PTL of the fuel cell is simulated as a network of pores surrounded by the solid material. The pore-phase and the solid-phase of the PTL are generated by varying the parameters of the Weibull distribution function. In the network model, the mass transfer takes place in the pore-phase and the bulk heat transfer takes place in the both the solid-phase and liquid phase of the PTL. Previous studies have looked at the thermal and mass transport in the porous media considering the pore size distribution. In the present study, the sensitivity of the thermal and mass transport to the different arrangements of the solid-phase is carried out and the effect of different solid-phase distributions on the thermal and liquid transport in PTL of PEM fuel cell are discussed.

Reduced mass transport resistance in polymer electrolyte membrane fuel cell by polyethylene glycol addition to catalyst ink

2019 ◽  
Vol 44 (1) ◽  
pp. 354-361 ◽  
Author(s):  
Hye-Yeong Lee ◽  
Sang-Kyung Kim ◽  
Myeong-Rye Lee ◽  
Dong-Hyun Peck ◽  
Yun Chan Kang ◽  
...  
Keyword(s):  
Polyethylene Glycol ◽  
Fuel Cell ◽  
Mass Transport ◽  
Polymer Electrolyte ◽  
Polymer Electrolyte Membrane ◽  
Electrolyte Membrane

scholarly journals A High Temperature Polymer Electrolyte Membrane Fuel Cell Model for Reformate Gas

2011 ◽  
Vol 2011 ◽  
pp. 1-18 ◽  
Author(s):  
M. Mamlouk ◽  
Tiago Sousa ◽  
Keith Scott
Keyword(s):  
Thin Film ◽  
High Temperature ◽  
Fuel Cell ◽  
Mass Transport ◽  
Polymer Electrolyte ◽  
Polymer Electrolyte Membrane ◽  
Operating Conditions ◽  
Cell Parameters ◽  
Electrolyte Membrane ◽  
Reformate Gas

A one-dimensional model of a high temperature polymer electrolyte membrane fuel cell using polybenzimidazole (PBI) membranes is described. The model considers mass transport through a thin film electrolyte covering the catalyst particles as well as through the porous media. The incorporation of a thin film model describing reactant gas mass transport through electrolyte covering the electrocatalyst is shown to be an essential requirement for accurate simulation. The catalyst interface is represented using a macrohomogeneous model. The influence of carbon monoxide, carbon dioxide, and methane, which would be present in a reformate gas, is considered in terms of the effect on the anode polarisation/kinetics behaviour. The model simulates the influence of operating conditions, cell parameters, and fuel gas compositions on the cell voltage current density characteristics. The model gives good predictions of the effect of oxygen and air pressures on cell behaviour and correctly simulates the mass transport behaviour of the cell. The model with reformate gas shows that additional voltage losses associated with CO poisoning can lead to loss in voltage of tens of mV and thus reduction in power.

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