Discharge rate and Coulombic efficiency go hand in hand. This is why the innovation of the high CE aluminum-ion battery is a promising improvement for the discharge rate problem of Al-ion batteries. This battery technology works by utilizing a novel electrolyte made from a blend of AlCl3 and urea, formulated in a 1.3:1 molar ratio. This battery operates using aluminum, as the anode and graphite as the cathode. Electrochemically, the battery exhibits distinct voltage plateaus around 1.9 and 1.5 V, with an average discharge of 1.73 V. These clear voltage plateaus offer consistent and predictable energy delivery stages, simplifying battery management and ensuring more stable performance during operation. What sets this battery apart is its outstanding CE of approximately 99.7% and a commendable cathode capacity of about 73 mAh g-1 at a current density of 100 mA g-1. Compared to LIBs, this aluminum-ion prototype presents several advantages. Furthermore, during its operation, in-situ Raman spectroscopy elucidated the chloroaluminate anion's intercalation and deintercalation within the graphite during the battery's charge and discharge cycles 17 . This indicates the formation of a stage 2 graphite intercalation compound when fully charged. Importantly, this battery offers an improved safety profile since its electrolyte is nonflammable, addressing one of the primary concerns with LIBs. Given these attributes, the aluminum-ion battery technology offers a promising solution for future highperformance, cost-effective energy storage needs .