Review on Proton Exchange Membrane Fuel Cell’s Metallic Bipolar Plate Fabrication Challenges

Weng, Fang-Bor

doi:10.20964/2022.05.53

Cited by 11 publications

(2 citation statements)

References 83 publications

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“…Usually, the most critical components of a fuel cell stack include the following two parts: BPs and the membrane electrode assembly (MEA) [ 1 ]. The BPs account for 30–50% of the cost of the whole stack, 60–90% of the volume, and 60–85% of the weight [ 2 ]. The functions of the BPs are as follows: conveying the reaction gas, transmitting a current, transferring waste heat, cooling water management, etc.…”

Section: Introductionmentioning

confidence: 99%

“…Conventional metal bipolar plate processing methods include stamping, thermoforming, hydroforming, powder metallurgy molding, electromagnet forming, ultrasonic assisted forming, etc. [ 2 ]. The metal BPs processed by the stamping process have a low cost, high strength, and high production feasibility, and have been applied to automobiles with high power density requirements, such as Toyota Mirai and Hyundai NEXO, which have been sold in the market.…”

Section: Introductionmentioning

confidence: 99%

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Investigation into the Three-Stage Formation of Micro-Channels with Ultra-Thin Titanium Sheets Used for Proton-Exchange Membrane Fuel Cell Bipolar Plates

Xie,

Fang,

Wang

et al. 2024

Materials

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Titanium has a low density and high corrosion resistance. In order to achieve the goal of a lightweight material, and to extend the normal working hour of proton-exchange membrane fuel cells (PEMFCs), ultra-thin titanium plates were chosen to manufacture the key components—bipolar plates (BPs). For the purpose of overcoming the challenges of manufacturing with a large depth to width ratio, a multi-stage formation process was established with characteristics such as high efficiency and a lower price. In this study, the process parameters were examined through an experimental approach. The outcomes show that the channel formed by multistage forming is deeper than that formed by single-stage forming under the same displacement conditions. To achieve greater flow depths, it is recommended to increase the displacements as much as possible during both the first- and second-stage forming processes. The implementation of three-stage forming can effectively reduce the maximum thinning rates within flow channels while improving the overall deformation uniformity. This method deviates from traditional one-stage loading processes by adopting multi-stage loading instead. By employing appropriate mold designs, material deformation and flow can be enhanced throughout gradual loading processes, thereby preventing strain concentration and enhancing the ultimate formation height accuracy within micro-flow channels. Consequently, the proposed three-stage forming process proves highly appropriate for the mass production of BPs utilizing titanium plates.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%