SSH2S

Fuel Cell Coupled Solid State Hydrogen Storage Tank

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 Obiettivo del progetto (Objective)

'The main objective of SSH2S is to develop a full tank-FC integrated system according to the requirements of the call and to demonstrate its application on a real system. A new class of material for hydrogen storage (i.e. MM'(BH4)n mixed boroydrides) as well as an allready known system (Li-Mg-N-H) will be explored. A new concept of solid state hydrogen tank (i.e. combination of two materials) will be investigated. The application of hydrogen tank on real system will be experimented with a 1 kW prototype on High Temperature Polymer Electrolyte Membrane (HTPEM) fuel cells. On the basis of the results obtained in the first part of the project, a ON/OFF milestone will be considered. If suitable performances will be obtained for the prototype integrated system, a scale up of the tank will be applied to a 5 kW APU. The final goal is to clearly demonstrate the applicability of the proposed integrated system in real applications. This final step in the project will allow a critical analysis of the system cost. For this goal, a consortium has been developed with the following expertises: • Materials development, synthesis and characterisation: UNITO, IFE, KIT, JRC • Tank design and production: DLR, TD, KIT, UNITO, JRC • Tank-FC integration and demonstration: DLR, TD, SER, CRF, UNITO The consortium is well balanced among research centres, for basic materials research and modelling, and industries, for system development and test. All research centres are members of N.ERGHY and one industry is member of the IG of the FCH-JU. Two industries are SME.'

Introduzione (Teaser)

A novel tank to store hydrogen in a solid state for use by fuel cells in cars could have significant impact on manufacturers and consumers. High energy density, compact size and increased safety are among the promised benefits.

Descrizione progetto (Article)

Hydrogen storage is a key enabling technology for the widespread use of hydrogen and fuel cell technologies in power systems (e.g. electric grids) and transportation. Currently, hydrogen for automotive use is stored in the form of compressed high-pressure gas, limiting both efficiency and safety.

Solid-state hydrogen storage is a viable alternative to compressed gas having higher energy density, less extreme operating conditions and less danger of explosions. Although proven suitable for stationary applications such as power grids, the technology needs to be adapted for light transport vehicles (LTVs). Scientists initiated the EU-funded project 'Fuel cell coupled solid state hydrogen storage tank' (SSH2S) to address this. Two hydrogen storage materials will be tested in a single solid-state hydrogen storage tank and fully integrated with a fuel cell for use in LTVs.

The materials consist of well studied mixed lithium amide/magnesium hydride and a new class of materials, mixed borohydrides. Scientists evaluated potential materials through a combination of modelling and experimental characterisation. Promising materials were selected based on improved energy capacity and efficiency, resistance to cycling and stable thermal behaviour. The team expects synergistic positive effects from the combination of materials leading to fast kinetics of the hydrogen binding and release (sorption reaction) by the storage materials. A prototype hydrogen storage tank has been designed with the help of two fluid dynamics models and a lab-scale version has undergone validation.

During the final project period, researchers will produce and test the scaled-up version of their novel solid-state hydrogen storage tank for use in LTVs. Success is expected to have important impact on large manufacturers, small businesses and consumers through safe and eco-friendly transport applications.