Influence the Filler Orientation on the Performance of Bipolar Plate

Radzuan, Nabilah Afiqah Mohd; Sulong, Abu Bakar; Somalu, Mahendra Rao

doi:10.17576/jsm-2019-4803-21

Cited by 7 publications

(4 citation statements)

References 48 publications

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“…Kenaf fibers (bast), as shown in Figure 1 a, had an average length between 350 and 400 mm, and were supplied by Lembaga Kenaf dan Tembakau Negara (LKTN, Kelantan), Malaysia. This type of kenaf was selected on the basis of its ability to exhibit excellent mechanical properties without requiring to undergo an alkaline-chemical-treatment process [ 21 ]. Details on the chemical composition of the kenaf fibers are listed in Table 1 .…”

Section: Methodsmentioning

confidence: 99%

“…Therefore, on this basis, orientation studies were conducted by the researchers of this study to enhance the mechanical properties of kenaf composites, especially under high-temperature operations. Some studies also indicated that the fiber orientation of composite materials frequently results in warpage, which degrades their mechanical performance as temperatures increase [ 20 , 21 ]. Hence, this study focused on the effect of temperatures ranging from 30 to 120 °C on the different orientations of kenaf-reinforced polypropylene (PP) composites.…”

Section: Introductionmentioning

confidence: 99%

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Effects of High-Temperature Exposure on the Mechanical Properties of Kenaf Composites

et al. 2020

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Automotive parts, including dashboards and trunk covers, are now fabricated through a compression-molding process in order to produce lightweight products and optimize fuel consumption. However, their mechanical strength is not compromised to avoid safety issues. Therefore, this study investigates kenaf-fiber-reinforced polypropylene composites using a simple combing approach to unidirectionally align kenaf fibers at 0°. The kenaf composite was found to withstand a maximal temperature of 120 °C. The tensile and flexural strengths of the aligned kenaf composites (50 and 90 MPa, respectively) were three times higher than those of the commercialized Product T (between 39 and 30.5 MPa, respectively) at a temperature range of 90 to 120 °C. These findings clearly showed that the mechanical properties of aligned kenaf fibers fabricated through the combing technique were able to withstand high operating temperatures (120 °C), and could be used as an alternative to other commercial natural-fiber products.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effects of High-Temperature Exposure on the Mechanical Properties of Kenaf Composites

et al. 2020

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“…Electrical conductivity of CPCs is determined by the morphology, structure, and orientation of the conductive pathways within the composite materials, which in turn are strongly influenced by the structural properties of the fillers such as shape, aspect ratio, and orientation [89,140,141]. For a filler with a particular particle size, shape, morphology, and aspect ratio, the orientation within a polymer matrix can significantly vary depending on the processing route.…”

Section: Filler Orientationmentioning

confidence: 99%

Processing methods for conductive polymer composite bipolar plates: Effect on plate quality and performance

2023

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Conductive polymer composites (CPCs) have been identified as viable replacements for graphite and metals for polymer electrolyte membrane fuel cell (PEMFC) bipolar plates (BPs). One important factor, apart from composite formulation, that affects the quality and properties of CPC BPs is the processing route. Therefore, understanding the possible processing methods for different matrix-filler combinations and their effects on the quality and properties of the plates can help in controlling and improving the final performance of BPs. This paper reviews the blending and molding techniques for CPC BPs, with a focus on relationship between formulation and processing method. The effects of processing route and conditions on microstructural features of CPC BPs, which affect the performance of the plates are also discussed. Finally, directions for further studies with potential to advance the development of quality and high-performance CPC BPs are highlighted. Identified key areas for further research include control of filler orientation to improve through-plane conductivity, correlation between processing parameters and dimensional accuracy of molded plates, and additive manufacturing of composite BPs.

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“…Fuel cells are generally classified based on their electrolyte and can be grouped into six major kinds of fuel cells, namely, alkaline fuel cells, phosphoric acid fuel cells, molten carbonate fuel cells, solid oxide fuel cells, polymer electrolyte fuel cells, and direct methanol fuel cells 4,5 . Although fuel cell technologies are benign to the environment, numerous works 6‐10 have been conducted and still need to be performed regarding the component materials, such as the electrode, catalyst, and system, for the technology to be sufficiently practical for penetration of the market alongside with other renewable energy sources given the often high manufacturing cost resulting from the use of expensive materials, such as platinum as the catalyst.…”

Section: Introductionmentioning

confidence: 99%

Critical review on development of magnesium alloy as anode inMg‐Airfuel cell and additives in electrolyte

et al. 2021

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Summary This study aimed to provide a critical review of the magnesium‐air fuel cell (MAFC) system to provide readers with an overall comprehension of MAFC, which focuses on the modification of the magnesium anode and properties of saltwater as an electrolyte. Although MAFC is benign to the environment, it is well‐known for its challenging corrosion issue and by‐product deposition that affect its durability for commercialization and long‐term application. Since that MAFC is able to use seawater as electrolyte, it has great potential to be used as an alternative energy option for the marine sector. This journal will dissect the ability of MAFC to be used as a competitive alternative energy. Over the years, researchers have adopted several approaches, such as experimenting with different types of magnesium alloy and anode fabrication techniques, to tackle corrosion problems to alter the microstructure and mechanical properties of the anode in addition to applying a coating protection and using Mg‐based composite material. Furthermore, studies intriguingly and gradually focused on electrolyte formulation with different types of additives to address the debilitating precipitation issue and improve the discharge performance. Given the problems that arise in the system, currently, MAFC commercial products are only suitable as emergency back‐up power. In future work, an improved storage system for MAFC should be built to accommodate the precipitation products while maintaining the desired cell performance.

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Influence the Filler Orientation on the Performance of Bipolar Plate

Cited by 7 publications

References 48 publications

Effects of High-Temperature Exposure on the Mechanical Properties of Kenaf Composites

Effects of High-Temperature Exposure on the Mechanical Properties of Kenaf Composites

Processing methods for conductive polymer composite bipolar plates: Effect on plate quality and performance

Critical review on development of magnesium alloy as anode inMg‐Airfuel cell and additives in electrolyte

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