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Projet R&D Si-DRIVE


Projet R&D Si-DRIVE

Silicon alloying anodes for high energy density batteries comprising lithium rich cathodes and safe ionic liquid-based electrolytes for enhanced high voltage performance.

Si-DRIVE is focusing on developing the next generation of Li-ion batteries based on an ionic liquid-based solid electrolyte, a silicon anode and a cobalt-free cathode.

Si-DRIVE will develop the next generation of rechargeable Li-ion batteries, enabling mass-market electric vehicles at a competitive cost thanks to processed materials and cell chemistry innovations, offering enhanced safety with superior energy density, life and fast charge capability, using sustainable and recyclable components. The technology encompasses amorphous silicon coated with a conductive copper silicide network as the anode with polymer/ionic liquid electrolytes and lithium-rich (cobalt-free) high-voltage cathodes via evolutionary processes, which can be manufactured in Europe. The components have been taken to TRL3 (Technology Readiness Level) through a preliminary lab-scale analysis, with a strategy of component improvement to achieve a prototype demonstration (TRL5) by the end of Si-DRIVE.

In-depth theoretical and experimental studies will probe and control the interfacial processes that have so far limited Li-ion technologies to marginal gains, looking at materials design and eliminating capacity-weakening mechanisms.

Si-DRIVE technology will exceed the stringent requirements of electric vehicle batteries, where safety is paramount, by dramatically improving each component of the Li-ion platform in a competitive, market-driven process over the entire life of the battery. The technology will also need to prove its suitability for reduced energy density second life applications beyond the main life of electric vehicles, prior to cost-effective recycling of materials in line with the circular economy.

The Si-DRIVE consortium has the expertise required from both academic and industrial partners to implement this technology. It will cover materials design and synthesis, electrochemical testing, prototyping and validation of production methods, life cycle assessment and development of recycling processes.

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