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Innovative Solid Oxide Electrolyser Stacks for Efficient and Reliable Hydrogen Production

Innovative Solid Oxide Electrolyser Stacks for Efficient and Reliable Hydrogen Production

Objective

The RelHy project targets the development of novel or improved, low cost materials (and the associated manufacturing process) for their integration in efficient and durable components for the next generation of electrolysers based on Solid Oxide Electrolysis Cells (SOEC). It is specifically tailored for 1) Optimisation of novel or improved cell, interconnect and sealing materials, 2) Achievement of innovative designs for SOE stacks to improve durability. As such, it is positioned as a bridge between currently good performing electrolysis cells and their efficient and reliable integration into advanced stacks to pave the way for the production of a new generation of electrolysers. To achieve these goals, the RelHy project is based on the coupled development of instrumented single repeat units and stacks and of associated simulation tools (from cell to stack scale). This mixed experimental and simulation approach will be used on several batches of materials - to give specifications for novel or improved materials and evaluate them, where special attention is paid to material compatibility (between electrodes, electrolyte, coating, interconnects and sealing). - to propose innovative designs able to overcome the present limiting parameters and to increase stack reliability, durability and performance. These material and design innovations will be validated at laboratory scale on a 25-cell stack prototype and its competitiveness will be assessed. Since the project is centered on R&D activities, the RelHy multidisciplinary European consortium is merging expertise from two university laboratories and three research centres already recognised for material development and cell production, instrumentation and testing, and modelling (DTU-Risoe, Imperial College, ECN, EIFER and CEA) and also from a fuel cell stack manufacturer that can produce electrolyser stacks (TOFC) and from an energy company (HELION) that can specify the operation conditions and assess the competitiveness of the innovative electrolyser prototype and its potential integration. The main issue addressed in the project is the simultaneous achievement of both, lifetime (degradation close to 1% for 1000 hr on single repeat units at 800°C) and efficiency (0.03 to 0.04 gH2/cm2/hr, i.e. approximately 1 A/cm2 with water utilisation >60% and a stack efficiency > 90%). These operation points and degradation values will yield an efficiency of up to 80% (LHV) at the system level with >99% availability. Cost issues will also be addressed by considering cost effective materials and processes in order to meet the “non energy” 1€/kg H2 target.
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Coordinator

COMMISSARIAT A L ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES

Address

Rue Leblanc 25
75015 Paris 15

France

Activity type

Higher or Secondary Education Establishments

EU Contribution

€ 659 970

Administrative Contact

Florence Lefebvre-Joud (Dr.)

Participants (6)

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DANMARKS TEKNISKE UNIVERSITET

Denmark

EU Contribution

€ 635 635,75

EIFER EUROPAISCHES INSTITUT FUR ENERGIEFORSCHUNG EDF KIT EWIV

Germany

EU Contribution

€ 367 790

STICHTING ENERGIEONDERZOEK CENTRUM NEDERLAND

Netherlands

EU Contribution

€ 529 638

IMPERIAL COLLEGE OF SCIENCE TECHNOLOGY AND MEDICINE

United Kingdom

EU Contribution

€ 381 381

TOPSOE FUEL CELL A/S

Denmark

EU Contribution

€ 257 885,25

AREVA STOCKAGE D'ENERGIE SAS

France

EU Contribution

€ 67 496

Project information

Grant agreement ID: 213009

Status

Closed project

  • Start date

    1 January 2008

  • End date

    31 December 2011

Funded under:

FP7-ENERGY

  • Overall budget:

    € 4 534 759

  • EU contribution

    € 2 899 796

Coordinated by:

COMMISSARIAT A L ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES

France