Fabrication of metallic bipolar plates in PEM fuel cell using semi-stamp rubber forming process

Elyasi, Majid; Talebi-Ghadikolaee, Hossein; Hosseinzadeh, Morteza

doi:10.1007/s00170-017-0206-4

Cited by 39 publications

(15 citation statements)

References 19 publications

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“…As is depicted, the final thickness (tf) occurs at the corner radius of the formed plate which implies this area is a critical zone for the thinning phenomenon. It should be noted that the equivalent strain at the onset of localized necking ( ) was used for evaluating the stamped plate from the tearing point of view using Equation (2). In this equation, n and R denote strain hardening exponent and Lankford coefficient, obtained from the tensile test, respectively.…”

Section: Validation Of Simulation Resultsmentioning

confidence: 99%

“…At the cathode side, a reaction comprises proton, electron, oxygen, and catalyst is performed. The formed water is left through the microchannels of the BPP [1][2][3][4][5][6]. Microchannels help better distribution of the hydrogen and oxygen on the BPPs, transmission of the produced electrons and water, and cooling the fuel cell to increase the efficiency.…”

Section: Introductionmentioning

confidence: 99%

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Investigation on Forming of Titanium Bipolar Plates Using Micro-stamping Process

Modanloo

Alimirzaloo

Elyasi

2020

IJE

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Micro-stamping process is one of the most cost-effective methods to manufacture metallic bipolar plates (BPPs). This research investigates the forming of titanium thin sheet as a potential candidate for BPPs in proton exchange membrane fuel cell (PEMFC). In this regard, the process was first simulated using finite element (FE) code Abaqus. Afterward, experimental tests were implemented and the validation of the FE model was confirmed using the experimental results. In the simulations, the corner radius of the die, draft angle, and friction coefficient at die/sheet interface were selected as variable factors. Forming force and thickness reduction as response functions were evaluated. It is demonstrated that the die corner radius has more influence on the maximum punch force compared to the draft angle and friction coefficient. The maximum punch force decreases with increasing the die corner radius. On the other hand, in order to have a lower thickness reduction, a high die corner radius, higher draft angle, and low friction coefficient are required.

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Section: Validation Of Simulation Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Investigation on Forming of Titanium Bipolar Plates Using Micro-stamping Process

Modanloo

Alimirzaloo

Elyasi

2020

IJE

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“…When many cells are connected in one stack, the bipolar plates conduct current between the adjacent cells. Another function of the bipolar plate is to dissipate the generated heat during the chemical reactions [18,19].…”

Section: The Bipolar Platesmentioning

confidence: 99%

Fuel Cells as a Source of Green Energy

Nafil¹,

Majeed²

2020

Thermodynamics and Energy Engineering

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A fuel cell is an effective tool for extracting chemical energy from a special type of gaseous fuel other than fossil fuels. It is expected to be a replacement for thermal engines and rechargeable batteries within the next few years as they are emissionfree and not subjected to Carnot restrictions. The fuel cell can be manufactured in different sizes depending on the amount of energy required, where it can be too small to be used in precision equipment or large enough to work as electrical stations. This proposal shows a demonstration of the principle of work involved in the fuel cells, structure components, and practice ideas to enhance the output power.

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“…A metallic bipolar plate was successfully fabricated using stainless steel SS304 [13] and titanium with a TiN layer [14]. To improve the filling percentage, thinning percentage, and dimensional accuracy, semi-stamp rubber forming was carried out instead of convectional rubber forming [15]. However, the main drawback of the rubber pad forming process is that the life of the rubber pad is not so long and should be replaced after the production of only about 100 plates.…”

Section: Introductionmentioning

confidence: 99%

Investigation on Microsheet Metal Deformation Behaviors in Ultrasonic-Vibration-Assisted Uniaxial Tension with Aluminum Alloy 5052

et al. 2020

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Ultrasonic vibration (UV) is widely used in the forming, joining, machining process, etc. for the acoustic softening effect. For parts with small dimensions, UV with limited output energy is very suitable for the microforming process and has been gaininf more and more attention. In this investigation, UV-assisted uniaxial tensile experiments were carried out utilizing GB 5052 thin sheets of different thicknesses and grain sizes, respectively. The coupling effects of UV and the specimen dimension on the properties of the material were analyzed from the viewpoint of acoustic energy in activating dislocations. A reduction of flow stress was found for the existing acoustic softening effects of UV. Additionally, the residual effects of UV were demonstrated when UV was turned off. The uniform deformation ability of thin sheet could be improved by increasing the hardening exponent with UV. The experimental results indicate that UV is very helpful in improving the forming limit in microsheet forming, e.g., microbulging and deep drawing processes.

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Fabrication of metallic bipolar plates in PEM fuel cell using semi-stamp rubber forming process

Cited by 39 publications

References 19 publications

Investigation on Forming of Titanium Bipolar Plates Using Micro-stamping Process

Investigation on Forming of Titanium Bipolar Plates Using Micro-stamping Process

Fuel Cells as a Source of Green Energy

Investigation on Microsheet Metal Deformation Behaviors in Ultrasonic-Vibration-Assisted Uniaxial Tension with Aluminum Alloy 5052

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