SUBLIME advances solid state batteries for EVs

The SUBLIME project was focused on developing the next generation sulfide electrolyte solid-state batteries for electric vehicle (EV) applications.

The wide global deployment of EVs is necessary to reduce transport related emissions, as transport is responsible for around a quarter of EU greenhouse gas emissions and more than two thirds of transport-related emissions are from road transport.

SUBLIME’s overall aim is to significantly increase EV adoption by taking on the technical challenges that are presented by consumers’ needs – especially the reduction in the costs of EVs and increasing their capabilities regarding long distance travelling and fast charging.

The SUBLIME concept entails development of a complete value chain from the requirements to testing for new sulfide electrolyte based solid-state battery cells with high capacity and high voltage stability.

SUBLIME proposes the use of high capacity, high voltage electrode materials. The battery will be inherently safe and able to operate at room temperature or lower, thus facilitating the start of the vehicle in a range of broad operating conditions.

Interfaces showing fast Li-ion transport are developed in the project, with partners focussing on developing intimate and (electro)-chemically stable interfaces with strong mechanical properties. The interfaces are specifically designed to increase the stability of the components and the malleable nature of the sulfide enables good interfacial contact.

SUBLIME will bring the sulfide electrolyte solid-state battery technology to TRL 6.

The scale-up to pre-industrial volume ensures that the results are, indeed, scalable to large-volume commercial manufacturing.

SUBLIME will deliver a roadmap to 2030, enabling eventual market entry by a strong constellation of European partners.