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Authors
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Aghvami-Panah, M.; Naji, A.; Krause, B.; Pötschke, P.; Ameli, A.
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Title
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Selective localization and hybrid network formation in immiscible polymer blends for high performance bipolar plates of fuel cells
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Date
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12.02.2026
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Number
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0
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Abstract
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Selective localization and hybrid network approaches were exploited through a scalable extrusion process to fabricate bipolar plates (BPPs) based on thermoplastic composites. Ternary conductive filler systems of carbon nanotube (CNT), carbon fiber (CF), and graphite (G) were introduced to a blend of polycarbonate (PC) and high-density polyethylene (HDPE). The blend's morphology and localization of fillers were theoretically and experimentally investigated and the impact of various compositions on electrical and thermal conductivities and strength were expounded. CNT and CF were localized in PC while G was localized at the PC/HDPE interface. The through-plane (T-P) and in-plane (I–P) electrical conductivities (EC) were significantly improved by having localized and hybrid networks. The composite with 3, 10 and 50 wt% of CNT, CF, G, respectively, exhibited the best conductivity performance, having T-P EC, I–P EC, and thermal conductivity of 10.0 S/cm, 61.1 S/cm, and 3.93 W/m·K, respectively. This work demonstrates a great potential of PC based hybrid composite blends for scalable BPP applications. This work demonstrates a great potential of PC based hybrid composite blends for scalable BPP applications.
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Publisher
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Elsevier
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Wikidata
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Citation
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Composites Science and Technology 278 (2026) 111574
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DOI
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https://doi.org/10.1016/j.compscitech.2026.111574
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Tags
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