Effect of Operating Conditions on the Acidity of H2/Air PEM Fuel Cells' Water

2019 ◽  
Vol 16 (2) ◽  
pp. 543-550 ◽  
Author(s):  
Aboubakr M. Abdullah ◽  
Takeyoshi Okajima ◽  
F. Kitamura ◽  
Takeo Ohsaka
Keyword(s):  
Fuel Cells ◽  
Pem Fuel Cells ◽  
Operating Conditions

scholarly journals Overall and local effects of operating conditions in PEM fuel cells with dead-ended anode

2017 ◽  
Vol 42 (7) ◽  
pp. 4690-4698 ◽  
Author(s):  
Yupeng Yang ◽  
Xu Zhang ◽  
Liejin Guo ◽  
Hongtan Liu
Keyword(s):  
Fuel Cells ◽  
Pem Fuel Cells ◽  
Operating Conditions ◽  
Local Effects

Taguchi Approach in Combination with CFD Simulation as a Technique for the Optimization of the Operating Conditions of PEM Fuel Cells

2020 ◽  
Vol 45 (9) ◽  
pp. 7587-7597
Author(s):  
Yassine Amadane ◽  
Hamid Mounir ◽  
Abdellatif El Marjani ◽  
Hafsa Bouhrim ◽  
Muhammad Adnan Rafi
Keyword(s):  
Fuel Cells ◽  
Cfd Simulation ◽  
Pem Fuel Cells ◽  
Operating Conditions ◽  
Taguchi Approach

Gas flow field with obstacles for PEM fuel cells at different operating conditions

2015 ◽  
Vol 40 (5) ◽  
pp. 2303-2311 ◽  
Author(s):  
Muhittin Bilgili ◽  
Magdalena Bosomoiu ◽  
Georgios Tsotridis
Keyword(s):  
Fuel Cells ◽  
Flow Field ◽  
Gas Flow ◽  
Pem Fuel Cells ◽  
Operating Conditions ◽  
Gas Flow Field

Imaging of Water Profiles in PEM Fuel Cells Using Neutron Radiography: Effect of Operating Conditions and GDL Composition

2019 ◽  
Vol 11 (1) ◽  
pp. 411-422 ◽  
Author(s):  
R. Mukundan ◽  
John R. Davey ◽  
Tommy Rockward ◽  
Jacob S. Spendelow ◽  
Bryan Pivovar ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Neutron Radiography ◽  
Pem Fuel Cells ◽  
Operating Conditions

Characterizing Performance of a PEM Fuel Cell for a CMET Balloon

2011 ◽  
Author(s):  
Denise A. McKahn ◽  
Whitney McMackin
Keyword(s):  
Fuel Cells ◽  
Fuel Cell ◽  
Mass Density ◽  
Pem Fuel Cell ◽  
Pem Fuel Cells ◽  
Cell Polarization ◽  
Operating Conditions ◽  
Design Parameters ◽  
Design System ◽  
Power Densities

We present the design of a multi-cell, low temperature PEM fuel cell for controlled meteorological balloons. Critical system design parameters that distinguish this application are the lack of reactant humidification and cooling due to the low power production, high required power mass-density and relatively short flight durations. The cell is supplied with a pressure regulated and dead ended anode, and flow controlled cathode at variable air stoichiometry. The cell is not heated and allowed to operate with unregulated temperature. Our prototype cell was capable of achieving power densities of 43 mW/cm2/cell or 5.4 mW/g. The cell polarization performance of large format PEM fuel cell stacks is an order of magnitude greater than for miniature PEM fuel cells. These performance discrepancies are a result of cell design, system architecture, and reactant and thermal management, indicating that there are significant gains to be made in these domains. We then present design modifications intended to enable the miniature PEM fuel cell to achieve power densities of 13 mW/g, indicating that additional performance gains must be made with improvements in operating conditions targeting achievable power densities of standard PEM fuel cells.

Thermodynamic Analysis of the Performance of an Irreversible PEMFC

2018 ◽  
Vol 388 ◽  
pp. 350-360 ◽  
Author(s):  
Chang Jie Li ◽  
Ye Liu ◽  
Zhe Shu Ma
Keyword(s):  
Fuel Cells ◽  
Fuel Cell ◽  
Proton Exchange Membrane ◽  
Pem Fuel Cells ◽  
Proton Exchange ◽  
Operating Conditions ◽  
Operating Pressure ◽  
Controllable Factors ◽  
Temperature Operating ◽  
Exchange Membrane

An irreversible model of proton exchange membrane fuel cells working at steady-state is established, in which the irreversibility resulting from overpotentials, internal currents and leakage currents are taken into account．In this paper, the irreversibility of fuel cell is expounded mainly from electrochemistry. The general performance characteristic curves are generated including output voltage, output power and output efficiency. In addition, the irreversibility of a class of PEMFC is studied by changing the operating conditions (controllable factors) of the fuel cell, including effect of operating temperature, operating pressure and leakage current. The results provide a theoretical basis for both the operation and optimal design of real PEM fuel cells．

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