Multilayer Progress

The Gold Standard Test* Captures key requirements simultaneously under what we believe are uncompromised test conditions 4-,10-,16-, 24-Layer Capacity Retention Mirrors Single-Layer Cycling Performance Cycle Energy Retention vs Cycle Count 100 80 00 Discharge energy [%] 40 40 60 60 20 20 Charge/Discharge Rate Cathode Loading 1C-1C avg 3.1-3.5 mAh/cm² Current Density 3.1-3.5 mAh/cm² Temperature 25-30 °C Anode Depth of Discharge Area+ Pressure Anode-free Li metal 100% Commercially relevant <~3.4 atm Layers 1, 4, 10, 16 or 24 +Commercially relevant dimensions may vary from 60x75 mm to 70x85 mm depending on cell format 1-layer 4-layer 10-layer 16-layer 24-layer 3rd-party; 1-layer 0 0 100 200 300 400 500 600 700 800 Cycle number QuantumScape® *Our gold-standard test conditions include: average charge/discharge rates of 1C or faster, temperatures of 25 °C, 100% depth of discharge, and externally applied pressure of no more than ~3.4 atmospheres, all simultaneously. 15

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