scholarly journals Subfreezing operation of polymer electrolyte fuel cells: Ice formation and cell performance loss

2012 ◽  
Vol 65 ◽  
pp. 127-133 ◽  
Author(s):  
Jeffrey Mishler ◽  
Yun Wang ◽  
Partha P. Mukherjee ◽  
Rangachary Mukundan ◽  
Rodney L. Borup
Keyword(s):  
Fuel Cells ◽  
Polymer Electrolyte ◽  
Polymer Electrolyte Fuel Cells ◽  
Cell Performance ◽  
Ice Formation ◽  
Performance Loss

TiO2-nanowire/MWCNT composite with enhanced performance and durability for polymer electrolyte fuel cells

2017 ◽  
Vol 3 (1) ◽  
Author(s):  
S. Vinod Selvaganesh ◽  
P. Dhanasekaran ◽  
Santoshkumar D. Bhat
Keyword(s):  
Fuel Cells ◽  
Polymer Electrolyte ◽  
Hybrid Composite ◽  
Carbon Support ◽  
Polymer Electrolyte Fuel Cells ◽  
Cell Performance ◽  
Pt Catalyst ◽  
Composite Support ◽  
Tio2 Nanowire ◽  
Key Parameter

AbstractDurability is a major issue and has been the growing focus of research for the commercialization of polymer electrolyte fuel cells (PEFCs). Corrosion of carbon support is a key parameter as it triggers the Pt catalyst degradation and affects cell performance, which in turn affects the longevity of the cells. Herein, we describe a hybrid composite support of TiO

Measurement of a new parameter representing the gas transport properties of the catalyst layers of polymer electrolyte fuel cells

2016 ◽  
Vol 18 (18) ◽  
pp. 13066-13073 ◽  
Author(s):  
Hiroshi Iden ◽  
Atsushi Ohma ◽  
Tomomi Tokunaga ◽  
Kouji Yokoyama ◽  
Kazuhiko Shinohara
Keyword(s):  
Fuel Cells ◽  
Fuel Cell ◽  
Transport Properties ◽  
Polymer Electrolyte ◽  
Gas Transport ◽  
Polymer Electrolyte Fuel Cells ◽  
Cell Performance ◽  
Fuel Cell Performance ◽  
Catalyst Layers ◽  
Gas Transport Properties

The optimization of the catalyst layers is necessary for obtaining a better fuel cell performance and reducing fuel cell cost.

Plasma Surface Modification of Carbon Electrodes for Polymer Electrolyte Fuel Cells (EFC 2005-86319)

2006 ◽  
Vol 3 (3) ◽  
pp. 322-326 ◽  
Author(s):  
K.-F. Chiu ◽  
M. Y. Hsieh
Keyword(s):  
Fuel Cells ◽  
Polymer Electrolyte ◽  
Inductively Coupled Plasma ◽  
Proton Exchange Membrane ◽  
Polymer Electrolyte Fuel Cells ◽  
Proton Exchange ◽  
Cell Performance ◽  
Carbon Surface ◽  
Carbon Electrodes ◽  
Plasma Treatments

Carbon electrodes are one of the key materials in polymer electrolyte fuel cells (PEFC), or proton exchange membrane fuel cells (PEMFC). The electrodes should allow water or water vapor, which is produced by the redox reactions, to flow out of the cells efficiently. In the meantime, the catalysis reactions are not interfered. In this study, the carbon electrodes for PEMFC have been modified in terms of the hydrophobic and hydrophilic properties by plasma irradiation. The process utilized inductively coupled plasma (ICP) driven by applying radio frequency (rf) power on an induction coil. A pure Ar, O2, and Ar∕O2 gas mixture were used as the plasma gas. Only one side of the sample has been treated. The material properties of the plasma treated and untreated carbon electrodes were investigated by Raman spectroscopy, Fourier transformed infrared spectroscopy (FTIR), and scanning electron microscopy (SEM). FTIR results show the plasma treatments effectively modified the functional groups on the carbon surface, and therefore the hydrophilic and hydrophobic properties of the surface. SEM and Raman spectra data suggested that the ion bombardment during plasma treatments alters the surface morphology and carbon bonding structures of the samples, which also result in a hydrophilic surface. The treated carbon electrodes were used as cathodes and have been packed with commercial carbon anodes and catalyst coated membrane to form 5cm×5cm fuel cells. The current-voltage polarization curves of these fuel cells were measured and compared. The test results show the feasibility of improving the cell performance by plasma treated electrodes. The feasibility of altering the hydrophobic and hydrophilic properties by plasma treatment has been demonstrated. The capillary effect due to the unbalanced hydrophilicity between the treated and untreated electrode surfaces may be responsible for the improved cell performance.

Numerical Analysis of Effects of Silica Coating for Use in Pt Catalyst on Cell Performance of Polymer Electrolyte Fuel Cells

2020 ◽  
Vol MA2020-02 (33) ◽  
pp. 2103-2103
Author(s):  
Kayoung Park ◽  
Magnus So ◽  
Masaki Goto ◽  
Sakae Takenaka ◽  
Yoshifumi Tsuge ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Numerical Analysis ◽  
Polymer Electrolyte ◽  
Silica Coating ◽  
Polymer Electrolyte Fuel Cells ◽  
Cell Performance ◽  
Pt Catalyst

Improvement of cell performance in catalyst layers with silica-coated Pt/carbon catalysts for polymer electrolyte fuel cells

2020 ◽  
Vol 45 (3) ◽  
pp. 1867-1877 ◽  
Author(s):  
Kayoung Park ◽  
Tomohiro Ohnishi ◽  
Masaki Goto ◽  
Magnus So ◽  
Sakae Takenaka ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Polymer Electrolyte ◽  
Polymer Electrolyte Fuel Cells ◽  
Cell Performance ◽  
Catalyst Layers ◽  
Carbon Catalysts
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