Effect of strengthened road vibration on performance degradation of PEM fuel cell stack

Hou, Yongping; Hao, Dong; Shen, Jianping; Li, Ping; Zhang, Tao; Wang, Hong

doi:10.1016/j.ijhydene.2016.01.072

Cited by 54 publications

(32 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…When the life limit is reached, the bolt threads in those regions may give rise to fretting wear, the possible damage that may cause the torque release. These phenomena are also observed in the experiments , . Furthermore, the possible torque loss may also cause decreasing of the inner pressure and increasing of hydrogen leakage rate and contact resistance.…”

Section: Fatigue Life Analysis Resultsmentioning

confidence: 99%

“…Rajalakshmi et al carried out a sine sweep and random vibrating test on a 3‐axis‐vibrating platform and observed that the torque applied to some tightening bolts was reduced from 14 to 6 N m. The bolt torque release may be caused by the structural failure such as the irreversible plastic deformation and joint wear under vibration . Hou et al made a vibration test for PEMFC stack under strengthened road vibration and found that the external leakage rate from the anodes (H 2 ) increased by 1.73 times. They pointed out that the compression force distribution and performance of sealing structures fluctuated irregularly during the long term vibration, which could lead to the leak rate increase .…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Fatigue Life Analysis of the Proton Exchange Membrane Fuel Cell Stack

et al. 2017

View full text Add to dashboard Cite

Proton exchange membrane fuel cell (PEMFC) stacks usually undergo vibrations during packing, transportation and serving time, in particular for those used in automobiles and portable equipment. Using finite element method (FEM), the response stress of the stack under random vibration is analyzed in the present paper. Based on the Miner fatigue damage theory, the fatigue lifes of fuel cell components (such as bolts, gaskets and PEMs) are assessed. Then the component fatigue life contours under four working conditions, i.e., the three single‐axial (in x‐, y‐ and z‐axis separately) and multi‐axial random vibrations are obtained. Accordingly, the component damage under vibrations in different directions is evaluated. The stress distribution on gasket and PEM will greatly affect their fatigue lifes. Moreover, comparing the fatigue lifes of 4‐bolt‐ and 6‐bolt‐clamping stacks under the same total clamping force, it is found that increasing the bolt number could improve the bolt fatigue lifes.

show abstract

Section: Fatigue Life Analysis Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Fatigue Life Analysis of the Proton Exchange Membrane Fuel Cell Stack

et al. 2017

View full text Add to dashboard Cite

show abstract

“…bolt and gasket, etc.) may be the reason for the bolt torque release [3,35] and hydrogen leakage [16,36]. In addition, comparing the effective masses, the main vibration modes of the stacks can be identified.…”

Section: Discussionmentioning

confidence: 99%

Vibration mode analysis of the proton exchange membrane fuel cell stack

Liu

Wei

et al. 2016

Journal of Power Sources

View full text Add to dashboard Cite

“…Chen et al pointed out that an proper combination of operating parameters helps reduce stack resistance and improve resistance distribution. In addition, shock and vibration also affect the performance and reliability of PEMFC stacks . For PEMDCs in transportation and portable fields, shock, and vibration are inevitable.…”

Section: Introductionmentioning

confidence: 99%

Rapid degradation characteristics of an air‐cooled PEMFC stack

et al. 2020

View full text Add to dashboard Cite

Summary Durability is one of the obstacles to the large‐scale commercialization of proton exchange membrane fuel cell (PEMFC) stacks. Understanding its decay behavior is a prerequisite for improving durability. In this study, rapid degradation characteristics of an air‐cooled PEMFC stack are investigated. Due to the simultaneous presence of various degradation sources, the maximum power of the PEMFC stack has been reduced by 39.6% after just 74.6 h of operations. Performance degradation characteristics are sought by analyzing the cell voltage, temperature distribution, ion chromatography, and surface morphology of the gas diffusion layer. The result shows that abnormal cell voltage and temperature distribution can reflect the problematic location. The fluoride ion emission rate is 0.111 mg/day, which proves that the membrane has been seriously degraded. Contact angle reduction and impurities attached to the surface of the gas diffusion layer lead to the water management failure. It is also found that the main factor for performance degradation could be different under different current conditions. And more information can be found under higher current conditions during monitoring the decay of PEMFCs. This study helps to deepen the understanding of performance degradation characteristics.

show abstract

Effect of strengthened road vibration on performance degradation of PEM fuel cell stack

Cited by 54 publications

References 27 publications

Fatigue Life Analysis of the Proton Exchange Membrane Fuel Cell Stack

Fatigue Life Analysis of the Proton Exchange Membrane Fuel Cell Stack

Vibration mode analysis of the proton exchange membrane fuel cell stack

Rapid degradation characteristics of an air‐cooled PEMFC stack

Contact Info

Product

Resources

About