Electrohydrodynamic Atomization Deposition of Fuel Cell Catalyst-Coated Membrane with Structure and Material Gradient Variation

Wang, Da Zhi; Zha, Wen; Zhu, Xiao Hu; Li, Yang; Liang, Jun; Ren, Tao; Luo, Yi; Wang, Xiao Dong; Liu, Chong

doi:10.4028/www.scientific.net/kem.645-646.1156

Cited by 1 publication

(2 citation statements)

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“…Even though the cell performance was not optimal, it showed the robustness and potential of electrospray for the industrial fabrication of fuel cell components . The group continued their investigation in layer-by-layer membrane-electrode assemblies, depositing up to seven layers with a structural gradient in which the porosity of the subsequent layers was modified to improve the performance of the cell …”

Section: Latest Work and Innovative Approachesmentioning

confidence: 99%

“…63 The group continued their investigation in layer-by-layer membrane-electrode assemblies, depositing up to seven layers with a structural gradient in which the porosity of the subsequent layers was modified to improve the performance of the cell. 64 Some innovative deposition approaches are being explored other than the standard cone-jet regime for electrode fabrication. For instance, the use of electrohydrodynamic jet deposition, which is formed at lower potentials than the conejet, resulted in the uniform deposition of fuel cell catalysts.…”

Section: Latest Work and Innovative Approachesmentioning

confidence: 99%

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Electrospray Deposition: A Breakthrough Technique for Proton Exchange Membrane Fuel Cell Catalyst Layer Fabrication

Conde

Ferreira-Aparicio

Chaparro

2021

ACS Appl. Energy Mater.

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This Spotlight article presents the state-of-the-art of electrospray deposition technique applied to the fabrication of proton exchange membrane fuel cell (PEMFC) components, mainly focusing on catalyst layers in gas diffusion electrodes. The atomization of a suspension of particles over a substrate under the influence of a strong electric field results in the growth of a film with macroporous morphology and many interesting properties. This so-called electrospray deposition has reported many noteworthy beneficial effects for the fabrication of the catalyst layers of gas diffusion electrodes of PEMFCs. The electrosprayed catalyst layers prepared from suspensions of catalyst particles and ionomers present a dendritic macroporous morphology with superhydrophobic character that improves the water management inside the cell and increases the performance by ∼20% with respect to standard electrodes prepared by airbrushing. Other interesting effects observed with electrosprayed catalyst layers are increased catalyst utilization and water absorption capabilities of the ionomer, improved performance under nonhumidified conditions, and a reduction in catalyst degradation. In addition, the electrospray deposition decreases platinum losses during fabrication thanks to the attractive electrostatic forces between the ion mist and the substrate compared with regular ink-based spray methods.

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Section: Latest Work and Innovative Approachesmentioning

confidence: 99%

Section: Latest Work and Innovative Approachesmentioning

confidence: 99%