Polyacrylic acid-Nafion composites as stable catalyst support in PEM fuel cell electrodes

Kayarkatte, Manoj Krishna; Delikaya, Öznur; Roth, Christina

doi:10.1016/j.mtcomm.2018.02.003

Cited by 7 publications

(2 citation statements)

References 26 publications

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“…For example, polymer precursor solutions such as polyacrylonitrile (PAN), when further pyrolyzed, can create a conductive carbon-support network [113,120,[123][124][125][126][127]. Alternative electrospinning solutions (e.g., TiO 2 , NbC, ATO) have been used to create conducting non-carbon-support networks [128][129][130][131][132][133][134]. Ionomer inks have also been electrospun to create proton conductive networks [135][136][137][138][139].…”

Section: Electrospun Electrodesmentioning

confidence: 99%

Advanced Electrode Structures for Proton Exchange Membrane Fuel Cells: Current Status and Path Forward

Yang,

Lee,

Qiao

et al. 2024

Electrochem. Energy Rev.

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Proton exchange membrane fuel cells (PEMFCs) have demonstrated their viability as a promising candidate for clean energy applications. However, performance of conventional PEMFC electrodes, especially the cathode electrode, suffers from low catalyst utilization and sluggish mass transport due to the randomly distributed components and tortuous transport pathways. Development of alternative architectures in which the electrode structure is controlled across a range of length scales provides a promising path toward overcoming these limitations. Here, we provide a comprehensive review of recent research and development of advanced electrode structures, organized by decreasing length-scale from the millimeter-scale to the nanometer-scale. Specifically, advanced electrode structures are categorized into five unique architectures for specific functions: (1) macro-patterned electrodes for enhanced macro-scale mass transport, (2) micro-patterned electrodes for enhanced micro-scale mass transport, (3) electrospun electrodes with fiber-based morphology for enhanced in-plane proton transport and through-plane O2 transport, (4) enhanced-porosity electrodes for improved oxygen transport through selective inclusion of void space, and (5) catalyst film electrodes for elimination of carbon corrosion and ionomer poisoning. The PEMFC performance results achieved from each alternative electrode structure are presented and tabulated for comparison with conventional electrode architectures. Moreover, analysis of mechanisms by which new electrode structures can improve performance is presented and discussed. Finally, an overview of current limitations and future research needs is presented to guide the development of electrode structures for next generation PEMFCs. Graphical Abstract Development of improved electrode architectures with the control of structure on length scales ranging from millimeters to nanometers could enable a new generation of fuel cells with increased performance and reduced cost. This paper presents an in-depth review and critical analysis of recent developments and future outlook on the design of advanced electrode structures.

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Section: Electrospun Electrodesmentioning

confidence: 99%

Advanced Electrode Structures for Proton Exchange Membrane Fuel Cells: Current Status and Path Forward

Yang,

Lee,

Qiao

et al. 2024

Electrochem. Energy Rev.

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“…Lei and coworkers spun a dispersion of boron nitride followed by thermal crosslinking to achieve stable thermally conductive mats for high-temperature thermoregulation. 154 In contrast, catalytic applications were targeted with the surfactant-aided encapsulation of Pt by Sightler et al 155 and further improved by Kayarkatte et al , 156 who added carbon particles to improve conductivity and prevent catalyst erosion at the same time.…”

Section: Dispersion Electrospinningmentioning

confidence: 99%