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<p>Among various fuel cell types, proton exchange membrane fuel cells (PEMFCs) are particularly promising due to their low operating temperatures, high energy density, and excellent scalability. These advantages enable the utilization of PEMFCs in both stationary power generation and various mobility applications, such as drones and fuel cell electric vehicles. However, broader adoption in mobility applications requires achieving higher volumetric power density. This review examines two next-generation strategies that address this challenge by moving beyond traditional PEMFC structures: flow-channel-integrated GDLs and foam-based GDL-less flow fields. Both approaches integrate multiple component functions into a single porous medium, effectively reducing cell thickness and interfacial resistance while significantly enhancing mass transport characteristics. We comprehensively analyze the electrochemical performance, transport mechanisms, and structural advantages of each approach, while also identifying key technical challenges that require further resolution. This review aims to stimulate broader research interest in these promising integrated structures, which demonstrate significant potential for advancing the development of next-generation PEMFCs.</p>

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Flow Channels-Integrated Porous Media and Foam-Based Gas Diffusion Layer-Less Flow Fields as Next-Generation Strategies for Proton Exchange Membrane Fuel Cells: A Review of Recent Advances

  • 期刊论文

  • 发表日期：

    2026年2月3日

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  • Gyutae Park,
  • Seonghyeon Yang,
  • Jiwon Baek,
  • Dongjin Kim,
  • Junseo Youn,
  • Youngjae Cho,
  • Subin Jeong,
  • Jooyoung Lim,
  • Junghyun Park,
  • Taehyun Park

摘要

Among various fuel cell types, proton exchange membrane fuel cells (PEMFCs) are particularly promising due to their low operating temperatures, high energy density, and excellent scalability. These advantages enable the utilization of PEMFCs in both stationary power generation and various mobility applications, such as drones and fuel cell electric vehicles. However, broader adoption in mobility applications requires achieving higher volumetric power density. This review examines two next-generation strategies that address this challenge by moving beyond traditional PEMFC structures: flow-channel-integrated GDLs and foam-based GDL-less flow fields. Both approaches integrate multiple component functions into a single porous medium, effectively reducing cell thickness and interfacial resistance while significantly enhancing mass transport characteristics. We comprehensively analyze the electrochemical performance, transport mechanisms, and structural advantages of each approach, while also identifying key technical challenges that require further resolution. This review aims to stimulate broader research interest in these promising integrated structures, which demonstrate significant potential for advancing the development of next-generation PEMFCs.