The ambition of INSTABAT is to monitor in operando key parameters of a Li-ion battery cell, in order to provide higher accuracy States of Charge, Health, Power, Energy and Safety (SoX) cell indicators, and thus allowing to improve the safety and the Quality, Reliability and Life (QRL) of batteries. To achieve this goal, INSTABAT will develop a proof of concept of smart sensing technologies and functionalities, integrated into a battery cell and capable of: • performing reliable in operando monitoring (time- and space-resolved) of key parameters (temperature and heat flow; pressure; strain; Li+ concentration and distribution; CO2 concentration; “absolute” impedance, potential and polarization) by means of: (i) four embedded physical sensors (optical fibers with Fiber Bragg Grating and luminescence probes, reference electrode and photo-acoustic gas sensor), (ii) two virtual sensors (based on electro-chemical and thermal reduced models), • correlating the evolution of these parameters with the physico-chemical degradation phenomena occurring at the heart of the battery cell, • improving the battery functional performance and safety, thanks to enhanced BMS algorithms providing in real-time higher accuracy SoX cell indicators (taking the measured and estimated parameters into consideration). Main results will be: (1) proof of concept of multi-sensor platform (cell prototype equipped with physical/virtual sensors, and associated BMS algorithms providing SoX cell indicators in real-time); (2) demonstration of higher accuracy for SoX cell indicators; (3) demonstration of improvement of cell functional performance and safety through two use cases for EV applications; (4) techno-economic feasibility study (manufacturability, adaptability to other cell technologies...). INSTABAT smart cells will open new horizons to improve cell use and performances (e.g. by reducing ageing, allowing the decrease of safety margins, triggering self-healing, facilitating second life, etc.).

THOR aims at developing a cost-effective thermoplastic composite pressure vessel for hydrogen storage both for vehicle and for transportation applications. Thermoplastics appear as a promising solution to the challenges faced by conventional tanks in terms of compatibility with hydrogen service and with mass automotive market requirements. The use of thermoplastic materials, advanced numerical modeling techniques and innovative manufacturing processes will boost the performance, improve safety, enable optimized tank geometry and weight (reduction of 10%) and reduce the cost for mass production (400€/kg of H2 stored for 30 000 tanks/year). A series of tests extracted from demanding automotive standards will validate all the requirements and demonstrate that thermoplastic tanks outperform thermoset ones. The consortium is representative of the hydrogen supply chain, from technology developer to manufacturer and end-user enhancing market uptake: a disruptive technology provider with successful commercial experience of thermoplastic tanks (COVESS), an ambitious Tier One supplier targeting a wide market introduction towards all OEMs (FAURECIA), an industrial gas expert with a long history related to hydrogen and a complementary end-user of tanks for hydrogen supply and refueling station operations (AIR LIQUIDE). This core industrial team is limited in purpose to avoid possible future commercial conflicts of interests and backed up with top research expertise to address all the identified challenges: an innovation center for material research with important tank scale testing capacity (CSM), a technology center in the fields of composite materials, manufacturing, automation, and testing (SIRRIS), academic teams with strong experience of composite materials and non-destructive testing (NTNU) and of thermo-mechanical materials behavior under fire aggression (CNRS) and a technical center with an innovative recycling technology for thermoplastic composites (CETIM-CERMAT).