SPIDER is a European collaborative project that will develop and demonstrate advanced Li-ion battery technologies with significantly improved energy density, cycle life, safety and recyclability. SPIDER stands for Safe and PrelithiatedhIgh energy DEnsity batteries based on sulphur Rocksalt and silicon chemistries. It will bring knowledge-based improvements of Li-ion battery cost, performance, recyclability and safety to enable electric vehicles to rapidly gain marketshare and reduce CO2 emissions. SPIDER spans 2019-2022 and the partners will receive funding from the European Community’s Horizon 2020 Programme (H2020/2014-2020) under Grant Agreement n° 814389.