Solid Power’s all-solid-state batteries have demonstrated energy densities of about 330 Wh/kg at their 22-layer automotive-scale cells, with a roadmap aiming to surpass 400 Wh/kg. This already exceeds most commercially available lithium-ion batteries today and represents a significant advancement in energy density compared to conventional batteries.
QuantumScape is not directly mentioned in the provided search results, so to compare, we reference publicly known figures: QuantumScape has reported solid-state battery energy densities in the range of approximately 400-500 Wh/kg in their technology demonstrations, aiming to enable longer range electric vehicles with faster charging.
For a broader context, other companies like Samsung SDI are targeting around 500 Wh/kg with their solid-state batteries, nearly doubling the typical 270 Wh/kg energy density of current lithium-ion EV batteries. This suggests that QuantumScape’s and Samsung’s targets are higher than Solid Power’s current demonstrated values, although Solid Power is actively developing toward surpassing 400 Wh/kg.
Summary Comparison
| Company | Energy Density (Wh/kg) | Notes |
|---|---|---|
| Solid Power | ~330 Wh/kg demonstrated, aiming >400 Wh/kg | Automotive-scale cells, near commercialization |
| QuantumScape | ~400 – 500 Wh/kg (publicly reported target) | Higher energy density goals, still in development |
| Samsung SDI | ~500 Wh/kg | Next-gen oxide solid-state batteries, mass production targeted by 2026 |
In conclusion, Solid Power’s batteries currently show high energy densities around 330 Wh/kg with plans to exceed 400 Wh/kg, while QuantumScape aims for somewhat higher energy densities around 400-500 Wh/kg, positioning its technology as potentially having greater specific energy than Solid Power’s current batteries.
Original article by NenPower, If reposted, please credit the source: https://nenpower.com/blog/how-does-the-energy-density-of-solid-powers-batteries-compare-to-quantumscapes/
