High-Rates Capability of High Nickel-Free Cobalt NMA as Cathode for Lithium-Ion Batteries
LiNi0.9Mn0.1-xAlxO2 (Li-NMA) cathodes (x = 0.01, 0.03, 0.05) were synthesized via co-precipitation and calcination. XRD confirmed a well-formed hexagonal structure. LiNi0.9Mn0.07Al0.03O2 (NMA 973) exhibited superior electrochemical performance, showing lower redox peak separation, the smallest charge transfer resistance (29.69 Ω cm-2), and a high specific discharge capacity of 172 mAh g-1 at 0.1C after 100 cycles. It also demonstrated excellent capacity at high current density (1C).
