Li(Ni0.40Mn0.40Co0.15Al0.05)O2: A promising positive electrode material for high-power and safe lithium-ion batteries

► First test of 'NMCA', an alternative material to the currently commercial ones (NCA). ► Promising results in power tests at 30 °C and −20 °C. ► Structural stability after long range cycling at 40 °C and 20 °C in a small potential window. ► Significantly improved thermal stability vs. industrial NCA.