Review of Conductive Polymer Coatings for Metallic Bipolar Plates in Proton Exchange Membrane Fuel Cells

JOURNAL OF POLYMER MATERIALS, Journal Year: 2025, Volume and Issue: 0(0), P. 1 - 10

Published: Jan. 1, 2025

Proton exchange membrane fuel cells (PEMFCs) have gained increasing interests as promising power sources due to their ability convert hydrogen and oxygen directly into electricity with high efficiency zero greenhouse gas emissions.Bipolar plates (BPs) are considered a critical component of PEMFCs, serving collect current, separate gases, distribute the flow field, conduct heat.This paper reviews technical status advancements in BP materials, special focus on strategies for enhancing interfacial contact resistance (ICR) corrosion through conductive polymer (CP) coatings.First, commonly used materials PEMFCs summarized.Then, advantages limitations various coatings metallic BPs discussed.Finally, recent progress CP BPs, aimed at achieving low ICR, is comprehensively reviewed.

Language: Английский

PEMFC bipolar plates fabricated via 3d printing using twin-screw extruded graphene/polyaniline: Fabrication, characterization, and performance evaluation

Energy Sources Part A Recovery Utilization and Environmental Effects, Journal Year: 2025, Volume and Issue: 47(1), P. 5634 - 5653

Published: Feb. 21, 2025

This study explores the potential of graphene-infused polyaniline (PANI) composite-based bipolar plates (BPPs) for Polymer Electrolyte Membrane Fuel Cells (PEMFCs), developed via twin-screw extrusion and Fused Deposition Modeling (FDM). Analyzing composites with varying graphene proportions (2 to 12 wt%), Plates D E containing 8wt% 10 wt% respectively emerged as superior, showcasing in-plane conductivities 82.15 S/cm 82.35 S/cm, through-plane 20.61 20.56 S/cm. While approaching US Department Energy's (US DoE) target 100 conductivity, these results highlight challenges in balancing conductivity optimization other properties. Both exceeded DoE benchmarks thermal mechanical strength, demonstrating values up 20.19 W/mK exceeding 40 MPa. In a single-cell PEMFC configuration, achieved power densities 471 mW/cm2 551 mW/cm2, accentuating their practicability. Further advancements are anticipated, next phase this study, poised explore functionalization into oxide (GO), thereby refining electrical characteristics through strategic chemical modifications. approach aims surmount existing limitations further elevate performance BPPs.

Language: Английский

Preparation and properties and performance study of chopped carbon fiber/polyvinylidene fluoride/expanded graphite composite bipolar plates utilizing surface-coated carbon nanotubes

Journal of Solid State Electrochemistry, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 19, 2024

Language: Английский