The Impact of the Operational Parameters on the PEM Fuel Cell Long-Term Performance

2016 ◽  
Vol 71 (1) ◽  
pp. 233-238 ◽  
Author(s):  
V. Andrea ◽  
P. d. S. P. Oliveira ◽  
E. I. Santiago ◽  
M. Linardi
Keyword(s):  
Fuel Cell ◽  
Pem Fuel Cell ◽  
Operational Parameters ◽  
Long Term Performance ◽  
Term Performance ◽  
The Impact

Long-term performance analysis of an HT-PEM fuel cell based micro-CHP system: Operational strategies

2015 ◽  
Vol 147 ◽  
pp. 582-592 ◽  
Author(s):  
Behzad Najafi ◽  
Alireza Haghighat Mamaghani ◽  
Fabio Rinaldi ◽  
Andrea Casalegno
Keyword(s):  
Fuel Cell ◽  
Performance Analysis ◽  
Pem Fuel Cell ◽  
Operational Strategies ◽  
Chp System ◽  
Long Term Performance ◽  
Term Performance

Effect of MEA activation method on the long-term performance of PEM fuel cell

2019 ◽  
Vol 242 ◽  
pp. 602-611 ◽  
Author(s):  
Mohammad Mohammadi Taghiabadi ◽  
Mohammad Zhiani ◽  
Valter Silva
Keyword(s):  
Fuel Cell ◽  
Pem Fuel Cell ◽  
Activation Method ◽  
Long Term Performance ◽  
Term Performance

scholarly journals Microstructure Evolution in a Solid Oxide Fuel Cell Stack Quantified with Interfacial Free Energy

Energies ◽  
2021 ◽  
Vol 14 (12) ◽  
pp. 3476
Author(s):  
Tomasz A. Prokop ◽  
Grzegorz Brus ◽  
Janusz S. Szmyd
Keyword(s):  
Free Energy ◽  
Fuel Cell ◽  
Solid Oxide Fuel Cell ◽  
Microstructure Evolution ◽  
Ion Beam ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Long Term Performance ◽  
Term Performance

Degradation of electrode microstructure is one of the key factors affecting long term performance of Solid Oxide Fuel Cell systems. Evolution of a multiphase system can be described quantitatively by the change in its interfacial energy. In this paper, we discuss free energy of a microstructure to showcase the anisotropy of its evolution during a long-term performance experiment involving an SOFC stack. Ginzburg Landau type functional is used to compute the free energy, using diffuse phase distributions based on Focused Ion Beam Scanning Electron Microscopy images of samples taken from nine different sites within the stack. It is shown that the rate of microstructure evolution differs depending on the position within the stack, similar to phase anisotropy. However, the computed spatial relation does not correlate with the observed distribution of temperature.

Platinum and Mixed Platinum-Metal Monolayer Fuel Cell Electrocatalysts: Design, Activity and Long-term Performance Stability

2019 ◽  
Vol 3 (1) ◽  
pp. 31-36 ◽  
Author(s):  
Radoslav R. Adzic ◽  
Junliag Zhang ◽  
Minhua Shao ◽  
Kotaro Sasaki ◽  
Miomir Vukmirovic ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Platinum Metal ◽  
Design Activity ◽  
Long Term Performance ◽  
Term Performance

scholarly journals Does Corporate Charitable Giving Help Sustain Corporate Performance in China?

2019 ◽  
Vol 11 (5) ◽  
pp. 1491 ◽  
Author(s):  
Keling Wang ◽  
Yaqiong Miao ◽  
Ching-Hui Su ◽  
Ming-Hsiang Chen ◽  
Zhongjun Wu ◽  
...  
Keyword(s):  
Charitable Giving ◽  
Corporate Performance ◽  
Sales Growth ◽  
Short Term ◽  
Return On Equity ◽  
Long Term Performance ◽  
Term Performance ◽  
The Impact ◽  
Total Sales

We examined whether corporate charitable giving (CCG) in China benefits corporate performance (CP) in terms of sales growth (SG), return on asset (ROA), return on equity (ROE), and Tobin’s Q (TQ), and revealed several findings. First, testing shows variation in the impact of CCG on CP. Whereas the ratio of corporate charitable giving (RCCG) to total sales revenue does not significantly enhance SG, ROA, and ROE, it is positively related to TQ. Second, the positive relationship between RCCG and TQ originates from non-state-owned firms (NSOFs) rather than state-owned firms (SOFs). Third, Chinese firms may use CCG as traditional philanthropy to enhance long-term performance instead of strategically using it to generate short-term performance. Lastly, an inverted U-shaped relationship exists between RCCG and TQ, especially for NSOFs.

The Use of Laboratory-Measured and Strain-Gauge Backcalculated Asphalt Stiffness for Rutting Performance Prediction

2019 ◽  
Vol 2673 (3) ◽  
pp. 323-333
Author(s):  
Erdem Coleri ◽  
John T. Harvey
Keyword(s):  
Performance Prediction ◽  
Strain Gauge ◽  
Asphalt Concrete ◽  
Laboratory Tests ◽  
Concrete Materials ◽  
Long Term Performance ◽  
Term Performance ◽  
The Impact

Laboratory tests are conducted with asphalt concrete materials to determine the expected in-situ performance. In addition, laboratory test results are commonly used in mechanistic-empirical design methods for material characterization to improve the predictive accuracy of the models. However, the effectiveness of laboratory tests in characterizing the long-term performance of asphalt concrete materials needs to be validated to be able to use the results for pavement design and long-term performance prediction. Inaccurate performance characterization and prediction can directly affect the decision-making process for pavement maintenance, rehabilitation, and reconstruction and result in unexpected early failures in the field. The major objective of this study is to determine the impact of using laboratory-measured asphalt stiffness on the prediction accuracy of mechanistic-empirical models. In addition, the effect of using linear-elastic modeling assumptions (layered elastic theory) and neglecting the nonlinearity of pavement response at high load levels (and/or at high strain levels for weaker structures) on the predicted rutting performance was determined. In this study, the effectiveness of the use of laboratory asphalt stiffness tests for in-situ asphalt stiffness characterization was determined by comparing the rutting performance predicted using laboratory-measured stiffness to rutting predicted using strain-gauge backcalculated stiffness. It was determined that laboratory tests are able to characterize the in-situ stiffness characteristics of the asphalt mix used in this study and the stiffness characterization process suggested in this study can provide reliable rutting performance predictions. Results of this study are only applicable to tested rubberized asphalt concrete mixtures.

scholarly journals Long-term performance of a plant microbial fuel cell with Spartina anglica

2010 ◽  
Vol 86 (3) ◽  
pp. 973-981 ◽  
Author(s):  
Ruud A. Timmers ◽  
David P. B. T. B. Strik ◽  
Hubertus V. M. Hamelers ◽  
Cees J. N. Buisman
Keyword(s):  
Fuel Cell ◽  
Microbial Fuel Cell ◽  
Spartina Anglica ◽  
Plant Microbial Fuel Cell ◽  
Long Term Performance ◽  
Term Performance

Ultra-low platinum content fuel cell anode electrocatalyst with a long-term performance stability

2004 ◽  
Vol 49 (22-23) ◽  
pp. 3873-3877 ◽  
Author(s):  
K Sasaki ◽  
J.X Wang ◽  
M Balasubramanian ◽  
J McBreen ◽  
F Uribe ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Platinum Content ◽  
Cell Anode ◽  
Long Term Performance ◽  
Term Performance ◽  
Fuel Cell Anode
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