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Fuel Cell Ionomers from Durable Aromatic Hydrocarbon Polymers of Intrinsic Microporosity

Project description

Sustainable materials for efficient hydrogen fuel cells

Transportation is a major source of greenhouse gas emissions, contributing to climate change. Hydrogen fuel cells are a clean solution, as they generate electricity without emissions. These fuel cells rely on proton exchange membranes (PEMs) coated with catalyst layers to work efficiently. However, the chemicals currently used in these membranes may be banned due to environmental concerns, prompting the need for safer alternatives. Supported by the Marie Skłodowska-Curie Actions programme, the PIMIonFuelCell project will develop new materials called aromatic hydrocarbon polymers with intrinsic microporosity. These polymers are highly durable and permeable, improving fuel cell performance. The project focuses on creating optimised catalyst-coated membranes to enhance efficiency and help fuel cells become a more sustainable energy source.

Objective

Vehicular transportation is responsible for a third of greenhouse gas emissions globally. Hydrogen fuel cells, comprising of a proton exchange membrane (PEM) coated with catalyst layers (CLs) and sandwiched between gas diffusion layers, generate electrical energy with high efficiency and zero emission. The concern regarding a potential ban by the European Union on the use of per- and polyfluoroalkyl-type ‘forever chemicals’ that are currently used as PEMs and CL ionomers prompts us to seek sustainable alternatives, such as aromatic hydrocarbons (AH).
Significant progress has been made to use AHs as PEMs, due to their excellent thermal stability and eco-friendly synthesis. However, presently the specific adsorption of aromatic constituents on the noble metal catalyst and low gas permeability in the CL causes a performance penalty, thus aggravating the use of AHs as catalyst ionomer.
The aim of this project is to address these issues by developing a new class of catalyst ionomers based on AH polymers with intrinsic microporosity (PIMs). AH PIMs are expected to improve FC performance: as highly gas permeable ionomer in the CL, they facilitate chemical reactions and improve interfacial compatibility between CLs and PEM.
Using chemically durable polyphenylenes as scaffold we propose to synthesize a range of AH PIMs with enhanced gas permeability and chemical durability (objective 1-2, University of Yamanashi). Catalyst ink formulations will be prepared and coated on both sides of best-in-class AH-based PEMs to obtain catalyst coated membranes (CCMs) with optimized morphology, electrochemical surface area, electrochemical activity and ionic conductivity (objective 3-4). Finally, the performance and durability of the novel CCMs will be evaluated in the single fuel cell at University of Freiburg (objective 5). This project will contribute to the increased market penetration of the fuel cell technology and to the realisation of a more sustainable society.

Fields of science (EuroSciVoc)

Keywords

Programme(s)

Topic(s)

Funding Scheme

HORIZON-TMA-MSCA-PF-GF - HORIZON TMA MSCA Postdoctoral Fellowships - Global Fellowships

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Call for proposal

(opens in new window) HORIZON-MSCA-2023-PF-01

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Coordinator

ALBERT-LUDWIGS-UNIVERSITAET FREIBURG
Net EU contribution
€ 290 627,04
Address
FAHNENBERGPLATZ
79098 Freiburg
Germany
Region
Baden-Württemberg Freiburg Freiburg im Breisgau, Stadtkreis
Activity type
Higher or Secondary Education Establishments
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Total cost
No data

Partners (1)