New Avenue for Limiting Degradation in NanoLi₄Ti₅O₁₂ for Ultrafast-Charge Lithium-Ion Batteries: Hybrid...

Lithium titanium oxide (Li₄Ti₅O₁₂)-based cells are a very promising battery technology for ultrafast-charge-discharge and long-cycle-life batteries. However, the surface reactivity of lithium titanium oxide in the presence of organic electrolytes continues to be a problem that may cause expansion of pouch cells. In this study, we report on the development of a simple and economical grafting method for forming hybrid polymer-Li₄Ti₁₅O₁₂ nanoparticles, which can be successfully applied in lithium-ion batteries. This method utilizes a low-cost and scalable hydrophobic polymer that is applicable in industrial processes. The hybrid materials demonstrated exceptional capability for preventing the degradation of cells in accelerated aging and operating over 150 cycles at 1C and 45 °C.