Scientists Develop Safer Battery to Boost EV Range in U.S

Researchers at Oak Ridge National Laboratory (ORNL) have made significant advancements in solid-state battery technology, potentially doubling the energy density for electric vehicles (EVs). This new battery design utilizes flexible and durable sheets of solid-state electrodes, measuring just 30 micrometers thick, which could enhance energy storage capabilities to 500 watt-hours per kilogram. Previous solid-state batteries faced challenges in durability and scalability, limiting their application in EVs despite their use in smaller devices like pacemakers and RFID tags. The innovative approach taken by the ORNL scientists involves a polymer that creates a strong yet flexible thin film, improving energy density beyond current solid-state and liquid lithium-ion technologies. The balance between binder material and ion conduction is crucial, as more binder enhances film quality but reduces conductivity, while less binder improves conduction but compromises quality. Safety is a significant concern with traditional lithium-ion batteries, which can produce hazardous chemicals during fires and have a risk of reigniting. The new solid-state technology developed by ORNL is non-volatile, eliminating the risks associated with conventional battery fires. This advancement could lead to safer electric vehicles, addressing both performance and safety issues. If successfully developed and implemented, this new generation of batteries could revolutionize the electric vehicle market by providing longer driving ranges and enhanced safety features, making EVs more appealing to consumers and potentially accelerating the transition to electric mobility.