The project PRETZEL is divided into the following seven work packages:
WORK PACKAGE 1 – Coordination
This work package is concerned with the general activity of coordination and steering of the activities in view of the time-schedule, project finances and the quality of the results.
WORK PACKAGE 2 – Definition of Specifications and Requirements
This work package will validate the component development tasks. Here the requirements and specifications on the new developed components such as catalysts, membrane electrode assembly (MEA), current collectors, macroporous layers (MPL), bipolar plates (BPP) and especially the design and tolerances will be defined. Also the measurement protocols will be determined and defined in collaboration to the existing standardization activities of the FCH JU and JRC.
This of course takes as long as WP 3 and 4 which will run in parallel in order to guarantee a deep communication between the component development of WP 3 followed by characterization and testing (WP 4).
WORK PACKAGE 3 – Component Manufacture
This work package is the heart of the project and the basis for reaching the FCH2 JU impacts in WP 5 and 6.
In collaboration between the Westfälische Hochschule, GKN Sinter Metals Filters GmbH (GKN) and the Deutsches Zentrum für Luft- und Raumfahrt e.V. (DLR), two approaches will be developed. These are the realizing sufficient and totally dense coatings for the highly conductive, flexible and low cost bipolar plate. This approaches are necessary in order to prevent corrosion and potentially destructive pin holes.
Additionally, GKN and DLR are working on a new current collector approach, which combines the structural benefits of graded porous structures overtaking the mass transport and water distribution function from the bipolar plate. It also optimize the performance at high current densities by applying MPL in contact to the electrodes. This development supports the gas removal at high gas production rates.
In a further collaboration, ARMINES and Soluciones Catalíticas IBERCAT S.L. are developing support materials and catalysts for improved activities, respectively. DLR will help to characterize those materials in terms of activity and stability. Those high performance materials will be used by ADAMANT in order to develop the electrodes used by the Centre for Research and Technology-Hellas (CERTH) producing the membrane electrode assembly.
WORK PACKAGE 4 – Compliance Testing and Characterization
This work package is responsible for the pre-qualification, characterization and testing of all developed and adjusted materials and components from Work Package 3. Universitatea Politehnica Timisoara (UPT), CERTH and DLR are responsible for electrochemical and physical characterization.
WORK PACKAGE 5 – High Pressure Stack
In this work package, the design of the cell frames developed in a currently running project at WHS will be adjusted to suit the cell components developed in Work Package 3. Major tasks will be the integration of the bipolar plates (BPPs) and the porous current distributors (PCDs) in combination with an adequate process media and hydraulic medium conduction. This is crucial in order to guarantee a homogeneous media transport through the single cells as well as a homogeneous temperature distribution. Therefore, the respective flow channels will be designed according to the specifications of the inner cell components (BPPs and PCDs).
Following the validation of the functionality of the component and cell design, a 25 kW stack will be constructed. This includes the modification of the existing high-pressure housing to fulfil the requirements concerning media and current conduction. The stack will be integrated into the test system at WHS.
WORK PACKAGE 6 – 25 kW System Integration
In this work package, the constructed stack from WP5 will be integrated in an existing test facility for test runs with the operating parameters. The system integration comprises, among other things, the elevated temperature and pressure. The engineering for this upgrade will be done by iGas Energy. Finally, long-term testing will provide information on the efficiency and cost reduction potential of the newly developed 25 kW high-pressure electrolysis system.
WORK PACKAGE 7 – Dissemination and Exploitation
This work package will disseminate the project progress and results so that non-participating organisations will be adequately informed of progress and recommendations arising from the work undertaken. This will be achieved in the following ways:
- One internal scientific workshop open to participants and invited stakeholders
- One public scientific workshop open to a wider community
- Publication of the results in scientific journals
- Quarterly project fact sheets
- Internet website