Effect of assembly error of bipolar plate on the contact pressure distribution and stress failure of membrane electrode assembly in proton exchange membrane fuel cell

Liu, Dong’an; Peng, Linfa; Lai, Xinmin

doi:10.1016/j.jpowsour.2009.12.113

Cited by 42 publications

(12 citation statements)

References 22 publications

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“…In this study, the stress concentration at the interfaces is obvious and the value cannot be ignored for the much stiffness and soft frames. It is obvious that the assembly pressure applied on the cells is normally from 1 to 2 MPa [7], which may generate higher stress concentration at the interfaces. The plasticity behavior is described by the PrandtlReuss theory.…”

Section: Discussionmentioning

confidence: 99%

“…As for the specific details, people can find the frame materials that most closely match their MEAs according to our results. 7, and the highest shear stress is approximately 0.37 MPa. It can be concluded that the softer the frame, the more undesired shear stress concentration will form at the interfaces.…”

Section: Aligned Frame Assemblymentioning

confidence: 94%

“…The stress problems caused by frames can be ascribed to the plane strain problems and the similar assumption has also been adopted in ref. [7]. The generalized plane strain element PLANE182 of four nodes is chosen to estimate more accurately the perpendicular stress in the bidimensional model.…”

Section: Model and Assumptionsmentioning

confidence: 99%

“…In this study, the contact modes between the frames and membrane are bare contact and bonded contact (with no slip allowed) disposed in the FEA by contact pairs and glue operation, respectively [7]. For the contact between the frames and the CCM, the two different contact models are built based on their actual contact assembly situation.…”

Section: Model and Assumptionsmentioning

confidence: 99%

“…Aligned gas channels produced smaller hygrothermal stresses than the alternating alignment of the bipolar plates. Liu et al [7] developed "least squaressupport vector machine (LS-SVM)" simulation and statistical…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Effects of Frame Materials and Structures on Stress Concentration of Membrane Electrode Assembly of PEMFCs

Ye¹,

Zhan²,

Lee³

et al. 2013

Fuel Cells

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A membrane electrode assembly (MEA) is one of the core components of proton exchange membrane fuel cells (PEMFCs) comprising a catalyst coated membrane, gas diffusion electrodes, frames, and seals. By employing a 2D finite element model the mechanical stresses in membrane caused during the cell assembly procedure are analyzed for different MEA frame materials, frame structures and contact behaviors. The stress distributions in the membrane are presented and quantified. A zone with strong nonuniform stresses in the membrane under the end edge of frame/membrane is observed. The stepped frames assembly (SFA) and the bonded contact behaviors have more uniform stress distributions than the aligned frames assembly (AFA) does. The frame materials are not the main factors affecting the stress concentration in membrane for the SFA, while for the AFA the mechanical properties of frame materials should be close to those of the membrane. The results are expected to be helpful for people to select the frame materials and to design frame structures, and can be applied to guide the assembly of PEMFCs.

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Section: Discussionmentioning

confidence: 99%

Section: Aligned Frame Assemblymentioning

confidence: 94%

Section: Model and Assumptionsmentioning

confidence: 99%

Section: Model and Assumptionsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Effects of Frame Materials and Structures on Stress Concentration of Membrane Electrode Assembly of PEMFCs

Ye¹,

Zhan²,

Lee³

et al. 2013

Fuel Cells

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Polymer Electrolyte Membrane Fuel Cells

Specchia

Francia

Spinelli

2011

Electrochemical Technologies for Energy Storage and Conversion

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Flow Manifold Optimization for a Uniform Velocity Distribution in a Laminated Microreactor with Micro‐Pin‐Fin Arrays

et al. 2014

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Velocity uniformity in reaction channels has a significant effect on the performance of laminated microreactors with micro-pin-fin arrays (MPFAR) for hydrogen production. The hydrogen production efficiency can be improved by optimizing the structure of flow manifolds. The relationship between the flow manifold structure and the velocity distribution in the reaction channel with MPFAR is established by an equivalent electrical resistance network model validated via simulation. The effects of the flow manifold structure on the velocity distribution are investigated. The results show that the velocity distribution can be improved by increasing the y-direction coordinate Y pi of the flow manifold inlet tube. The flow manifold structure is optimized for better velocity distribution in reaction channels with different MPFAR widths.

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Effect of assembly error of bipolar plate on the contact pressure distribution and stress failure of membrane electrode assembly in proton exchange membrane fuel cell

Cited by 42 publications

References 22 publications

Effects of Frame Materials and Structures on Stress Concentration of Membrane Electrode Assembly of PEMFCs

Effects of Frame Materials and Structures on Stress Concentration of Membrane Electrode Assembly of PEMFCs

Polymer Electrolyte Membrane Fuel Cells

Flow Manifold Optimization for a Uniform Velocity Distribution in a Laminated Microreactor with Micro‐Pin‐Fin Arrays

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