scholarly journals Visualization of Fuel Cell Water Transport and Performance Characterization under Freezing Conditions

2010 ◽  
Author(s):  
Satish G. Kandlikar ◽  
Zijie Lu ◽  
Navalgund Rao ◽  
Jacqueline Sergi ◽  
Cody Rath ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Water Transport ◽  
Cell Water ◽  
Performance Characterization ◽  
And Performance

scholarly journals Numerical modeling and performance prediction of water transport for PEM fuel cell

2019 ◽  
Vol 158 ◽  
pp. 2256-2265 ◽  
Author(s):  
Yangbin Shao ◽  
Liangfei Xu ◽  
Jianqiu Li ◽  
Minggao Ouyang
Keyword(s):  
Numerical Modeling ◽  
Fuel Cell ◽  
Water Transport ◽  
Performance Prediction ◽  
Pem Fuel Cell ◽  
And Performance

Experimental investigation of the role of a microporous layer on the water transport and performance of a PEM fuel cell

2007 ◽  
Vol 170 (1) ◽  
pp. 111-121 ◽  
Author(s):  
Hasan K. Atiyeh ◽  
Kunal Karan ◽  
Brant Peppley ◽  
Aaron Phoenix ◽  
Ela Halliop ◽  
...  
Keyword(s):  
Experimental Investigation ◽  
Fuel Cell ◽  
Water Transport ◽  
Pem Fuel Cell ◽  
Microporous Layer ◽  
And Performance

Effect of Temperature Gradient on End Cell Water Transport in a Polymer Electrolyte Fuel Cell After Shutdown

2009 ◽  
Author(s):  
Manish Khandelwal ◽  
Matthew M. Mench
Keyword(s):  
Boundary Condition ◽  
Fuel Cell ◽  
Temperature Gradient ◽  
Single Cell ◽  
Water Transport ◽  
Thermal Model ◽  
Cell Model ◽  
Single Cell Level ◽  
Cell Water ◽  
Cell Level

In a PEFC stack, end cells are subjected to severe conditions compared to the center cell, sometimes resulting in poor end cell performance and early freeze out. In this work, the concept of using controlled temperature gradients to non-parasitically remove excess water from end cell during PEFC stack shutdown has been numerically investigated. To investigate the end cell water transport, an integrated modeling approach focusing both at stack and single cell level is presented. The stack thermal model is developed to obtain detailed temperature distribution across the PEFC stack. Extending the results of the stack thermal model into a single cell level, a two-phase unit fuel cell model is developed to investigate the water and thermal transport in the PEFC components after shutdown, which for the first time includes thermo-osmotic flow in the membrane. The model accounts for capillary and phase-change induced flow in the porous media, and thermo-osmotic and diffusive flow in the polymer membrane. The single cell model is used to estimate the local water distribution with land/channel boundary condition, and the experimentally validated stack thermal model provided the transient temperature boundary condition to simulate the end cells. Model results indicate that a favorable temperature gradient can be formed in the stack to enhance the water drainage rate, thus enhancing the anode end cell cold start performance.

Current progress and performance improvement of Pt/C catalysts for fuel cells

2020 ◽  
Vol 8 (46) ◽  
pp. 24284-24306
Author(s):  
Xuefeng Ren ◽  
Yiran Wang ◽  
Anmin Liu ◽  
Zhihong Zhang ◽  
Qianyuan Lv ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Fuel Cell ◽  
Energy Conversion ◽  
Performance Improvement ◽  
Electric Energy ◽  
Energy Conversion Efficiency ◽  
High Energy ◽  
Carnot Cycle ◽  
High Energy Conversion Efficiency ◽  
And Performance

Fuel cell is an electrochemical device, which can directly convert the chemical energy of fuel into electric energy, without heat process, not limited by Carnot cycle, high energy conversion efficiency, no noise and pollution.

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