State-of-the-art lithium-ion batteries are well-established energy storage systems with high performance and high safety. But to develop large-scale solid state batteries with, in fact, a volumetric energy density twice as high as in today’s Li-ion batteries includes several challenging tasks:
- Using non-flammable materials
- Avoiding the formation of insulating layers for more safety
- Achieving higher thermal, chemical, electrochemical and mechanical stability