A scalable and long-cycle-life 600 Wh kg⁻¹ solid-state lithium metal pouch cell

Key Contributions

• Demonstrates a practical 11 Ah pouch cell format — moving beyond coin-cell lab demonstrations
• Achieves 604.2 Wh/kg gravimetric energy density, among the highest reported for solid-state cells
• Uses carbonate gel electrolyte rather than sulfide or oxide, improving manufacturability
• Surface-modified lithium metal anode suppresses dendrite growth for long cycle life
• Scalable design addresses key criticism that solid-state results don't translate to real cells

Results / Data

• Cell format: 11 Ah pouch cell
• Energy density: 604.2 Wh/kg
• Electrolyte: Carbonate gel (solid-state class)
• Anode: Surface-modified lithium metal
• Long cycle life demonstrated at pouch-cell scale

Source: 600 Wh/kg solid-state lithium metal pouch cell — Nature Communications, 2025