Nanowerk October 24, 2023
Researchers at MIT have introduced Li-garnet Li7La3Zr2O12−d (LLZO) as a suitable ceramic due to its high Li+ conductivity and wide electrochemical stability window. However, high sintering temperatures raise concerns about the cathode interface stability, production costs, and energy consumption for scalable manufacture. They developed a “sinter-free” route to stabilize cLLZO as films at half of its sinter temperature. They established a time-temperature-transformation (TTT) diagram which captured the amorphous-to-crystalline LLZO transformation based on crystallization enthalpy analysis and confirmed stabilization of thin-film cLLZO at record low temperatures of 500 °C. According to the researchers their findings pave the way for low-temperature processing via TTT diagrams, which can be used for battery cell design targeting reduced carbon footprints in manufacturing… read more. Open Access TECHNICAL ARTICLE
