Solid Power SPAC Presentation Deck

The Most Advanced Known Solid Electrolytes Only Solid Power develops and produces at pilot scale and tests in large format cells on a scalable production line Conductivity Low Density Ni-Rich Cathode Compatibility Solid Power Current R&D Material Solid Power DCRC TOYOTA LiSipSCI Li Metal Stability Dendrite Resistance LLZO I ■ Best all-around solid electrolyte materials produced using low-cost, scalable processes ▪ All precursors are common, commercial-grade materials produced in very large quantities, except Li₂S Products and Technology ■ ■ Li₂S production is expected to significantly increase with commercialization of sulfide all- solid-state batteries Li₂S precursor is being developed in-house and via partners Designed for low cost and optimized for mass production A portion of Li₂S production will occur in-house Currently producing up to 100 kg per month of solid electrolyte, which will need to be scaled to 500,000 kg per month by vehicle start of production Solid Power's current electrolyte and future R&D chemistry is posed to outperform competing sulfides Solid Power's electrolytes offer the best combination of conductivity and cell-level performance Solid Power is researching more innovative, high throughput electrolyte processes to further drive competitive advantage 25

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