Biology-inspired solid-state battery boosts EV range to 500 miles

Researchers at Georgia Tech have developed a novel solid-state battery that blends lithium with soft sodium metal, significantly reducing the high pressure typically required for solid-state battery operation. This breakthrough addresses a major limitation of solid-state batteries, which usually need heavy and bulky metal plates to maintain pressure, making them impractical for widespread use. By incorporating sodium, which is electrochemically inactive but very soft, the battery maintains better contact with the solid electrolyte under lower pressure, enhancing performance and potentially enabling lighter, longer-lasting batteries. The team drew inspiration from biology, specifically the concept of morphogenesis, to explain how the sodium-lithium combination adapts structurally during battery use. This biological analogy helped them understand the deformable nature of sodium within the battery, which adjusts to changes and improves stability. Funded partly by DARPA, the research promises significant advancements, including electric vehicles capable of traveling 500 miles on a single charge and longer-lasting phone batteries. While commercialization challenges remain, this innovation could mark a major leap forward in battery technology by making solid-state batteries more competitive with current lithium-ion standards.