The EU-funded SeNSE project aims to create next-generation lithium-ion batteries with a silicon-graphite composite anode and a nickel-rich Nickel Manganese Cobalt (NMC) cathode to reach a volumetric energy density of 750 Wh/l. Cycling stability is the key challenge for the adoption of this cell chemistry.
The objective is to reach 2’000 deep cycles by:
- reducing the surface reactivity of the active materials by a combination of novel film-forming electrolyte additives and active materials coatings,
- compensating irreversible lithium losses during the first cycles employing pre-lithiated silicon and providing an on-demand reservoir of excess lithium in the cathode,
- identifying and controlling critical cycling parameters with data provided from in-cell sensors.
The new battery will also provide a battery management system couped to dynamic in-cell sensors to enable faster charging, improved sustainability and recyclability, and reduced production costs.