The influence of CO on the current density distribution of high temperature polymer electrolyte membrane fuel cells

2011 ◽  
Vol 56 (25) ◽  
pp. 9467-9475 ◽  
Author(s):  
M. Boaventura ◽  
H. Sander ◽  
K.A. Friedrich ◽  
A. Mendes
Keyword(s):  
Fuel Cells ◽  
High Temperature ◽  
Density Distribution ◽  
Polymer Electrolyte ◽  
Current Density ◽  
Polymer Electrolyte Membrane ◽  
Current Density Distribution ◽  
Electrolyte Membrane

scholarly journals Thermal management of high-temperature polymer electrolyte membrane fuel cells by using flattened heat pipes

2020 ◽  
pp. 135-135
Author(s):  
Krerkkiat Sasiwimonrit ◽  
Wei-Chin Chang
Keyword(s):  
Fuel Cells ◽  
High Temperature ◽  
Temperature Distribution ◽  
Temperature Gradient ◽  
Heat Pipe ◽  
Polymer Electrolyte ◽  
Current Density ◽  
Polymer Electrolyte Membrane ◽  
Electrolyte Membrane ◽  
Heating And Cooling

High-temperature polymer electrolyte membrane fuel cell (HT-PEMFC) is a clean energy conversion device that generates electricity directly from the electrochemical reaction. Since the working temperature is about 160 ?C, the heating and cooling mechanisms are critical factors to maintain the optimal working condition and prevent the cell from degradation. Simulation models of HT-PEMFC were built for investigating the temperature distribution on the working area of fuel cells and temperature gradient across the stack. The ordinary method of heating by using heating pads and cooling by applying forced convection air was compared with the heat pipe heating and cooling technique. The results showed that heat pipe provided a more uniform temperature distribution and current density across the fuel cells stack. The temperature gradient of 0.214?C/cell during heating and 0.054?C/cell during cooling processes were observed. Meanwhile, only 0.44 mA cm-2/cell of current density gradient was found.

scholarly journals Correlating high temperature thin film ionomer electrode binder properties to hydrogen pump polarization

2021 ◽  
Author(s):  
Gokul Venugopalan ◽  
Deepra Bhattacharya ◽  
Subarna Kole ◽  
Cameron Ysidron ◽  
Polyxeni P. Angelopoulou ◽  
...  
Keyword(s):  
Thin Film ◽  
Fuel Cells ◽  
High Temperature ◽  
Polymer Electrolyte ◽  
Polymer Electrolyte Membrane ◽  
Pem Fuel Cells ◽  
Profound Impact ◽  
Electrolyte Membrane ◽  
Electrode Binder ◽  
Hydrogen Pump

Ionomer electrode binders are important materials for polymer electrolyte membrane (PEM) fuel cells and electrolyzers and have a profound impact on cell performance. Herein, we report the effect of two...

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