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Breakthrough Makes Lithium Metal Batteries Both Fire-Safe and Long-Lasting

Researchers develop lithium metal batteries that combine fire safety with long life using a new electrolyte and interface design. Breakthrough enables stable cycling with flame retardants.

This research directly addresses two of the biggest hurdles preventing widespread adoption of lithium metal batteries: safety concerns and limited lifespan. For consumers, this means future electric vehicles could offer significantly longer range on a single charge while eliminating fire risks that have plagued some current lithium-ion batteries. For industries like renewable energy and aerospace, it enables more reliable, high-capacity storage solutions that can operate safely under demanding conditions. By solving the fundamental trade-off between flame retardancy and performance, this advancement accelerates the timeline for practical lithium metal batteries, which could lead to cheaper, safer, and more powerful energy storage across transportation, electronics, and grid infrastructure—ultimately supporting the global transition to sustainable energy systems.