High voltage, room temperature single-ion polymer electrolyte for safer all solid state lithium metal batteries

The greatest challenges towards the worldwide success of battery-powered electric vehicles revolve around the safety,

energy density, and cost of the battery technologies. Solid-state polymer electrolytes and lithium metal anode address

these challenges by replacing the flammable and unstable liquid electrolytes and enabling dendrite-free cycling of

high-energy lithium metal cells manufactured by sustainable and cost-effective processing. The PSIONIC project

advances the development of all-solid-state battery technology by employing amorphous cross-linked Polyethylene

oxide (PEO) laminated on the thin lithium foil at the anode and high voltage cathode coated with a single-ion conductive

polymer. This will allow to replace the flammable and unstable liquid electrolytes and enabling dendrite-free cycling

of high-energy lithium metal cells manufactured by sustainable processing. Special attention will be devoted to the

optimization of interfaces between the active material and polymer electrolyte. Materials selection will enable the use

of the manufacturing technology available at BlueSolutions, which is readily scalable, based on sustainable processing

using solvent-free extrusion. PSIONIC is aiming to develop cells with a safety hazard level 2, since no liquid component

will be in the cell at the end of the project.

The research and innovation actions carried under the PSIONIC project will not only just contribute to the technological

advancements of all-solid-state Li-ion batteries in terms of safety, reliability, performance, cost, and sustainability, but

will also enable higher uptake by the electromobility sector and end consumers, paving a pathway towards climate

neutrality, and green energy transition.