Application of Nanomaterials in Fuel Cells

A special issue of Nanomaterials (ISSN 2079-4991). This special issue belongs to the section "Energy and Catalysis".

Deadline for manuscript submissions: closed (31 July 2021) | Viewed by 3279

Special Issue Editor


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Guest Editor
Université Grenoble Alpes, CEA-LITEN, Grenoble, France
Interests: PEM fuel cells with a special interest on Neutron and X-ray characterizations

Special Issue Information

Dear Colleagues,

A Special Issue of Nanomaterials called Nanomaterials for Fuel Cells has been launched. Fuel cells either based on ceramic or polymer-conducting electrolytes (SOFCs or PEMFCs) are multi-physic and multi-scale green energy conversion systems that are very efficient and are already on the commercial market for specific applications. However, for large-scale dissemination, these systems still need to be improved in terms of performance, lifetime, and production costs. The necessary electro-catalysts are nanoparticles dispersed in thick electrodes. They require contact with the reactant gases and the electron and ion conductive materials and stability for long-term operation. The nanoscale structure is also crucial in solid electrolytes to insure transport properties. This Special Issue is open original research on new developments of nanostructured materials and a better understanding of the fuel cell operation especially at a molecular scale including operando experiments and modeling the field. Degradation and recycling studies and also developments of new efficient alternative materials for fuel cells and water electrolyzers will also be included.

Dr. Gerard Gebel
Guest Editor

Manuscript Submission Information

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Keywords

  • fuel cells
  • PEMFC
  • SOFC
  • electrocatalyst
  • solid electrolytes
  • degradation processes
  • recycling

Published Papers (1 paper)

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Research

13 pages, 2914 KiB  
Article
Scalable Sacrificial Templating to Increase Porosity and Platinum Utilisation in Graphene-Based Polymer Electrolyte Fuel Cell Electrodes
by Theo A. M. Suter, Adam J. Clancy, Noelia Rubio Carrero, Marie Heitzmann, Laure Guetaz, Paul R. Shearing, Cecilia Mattevi, Gérard Gebel, Christopher A. Howard, Milo S. P. Shaffer, Paul F. McMillan and Dan J. L. Brett
Nanomaterials 2021, 11(10), 2530; https://doi.org/10.3390/nano11102530 - 28 Sep 2021
Cited by 3 | Viewed by 2670
Abstract
Polymer electrolyte fuel cells hold great promise for a range of applications but require advances in durability for widespread commercial uptake. Corrosion of the carbon support is one of the main degradation pathways; hence, corrosion-resilient graphene has been widely suggested as an alternative [...] Read more.
Polymer electrolyte fuel cells hold great promise for a range of applications but require advances in durability for widespread commercial uptake. Corrosion of the carbon support is one of the main degradation pathways; hence, corrosion-resilient graphene has been widely suggested as an alternative to traditional carbon black. However, the performance of bulk graphene-based electrodes is typically lower than that of commercial carbon black due to their stacking effects. This article reports a simple, scalable and non-destructive method through which the pore structure and platinum utilisation of graphene-based membrane electrode assemblies can be significantly improved. Urea is incorporated into the catalyst ink before deposition, and is then simply removed from the catalyst layer after spraying by submerging the electrode in water. This additive hinders graphene restacking and increases porosity, resulting in a significant increase in Pt utilisation and current density. This technique does not require harsh template etching and it represents a pathway to significantly improve graphene-based electrodes by introducing hierarchical porosity using scalable liquid processes. Full article
(This article belongs to the Special Issue Application of Nanomaterials in Fuel Cells)
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