Production of LiNi_(0.6)Mn_(0.2)Co_(0.2).2O_2 via Fast Oxalate Precipitation for Li-Ion

摘要

Lithium-Ion (Li-Ion) battery is one of the secondary battery developed today. One of the important components of Li-Ion is cathode. Lithium Manganese Cobalt (LMCO), the last developed cathode material, had some disadvantage such as not resistant to high temperatures and short cycle performances. While Cathode material of LiNi_(0.6)Mn_(0.2)CO_(0.2).2O_2 had some advantages of good structure stability, higher safety in high temperature and higher capacity. Here in this research the substance of nickel was inserted to the cathode material. The aim of the research was to synthesize LiNi_(0.6)Mn_(0.2)CO_(0.2).2O_2 through simple and fast method of co-precipitation. Metal sulfate of Nickel, Manganese and Cobalt with a certain ratio were reacted with excess of Sodium hydroxide. Metal hydroxide formed was then precipitated with the co-precipitant of oxalic acid and pH adjuster of ammonia. Metal hydroxide obtained was then reacted with Lithium hydroxide in high temperature of solid state. The product yielded was characterized by XRD, FTIR and electrochemical performance analyzer. The result showed that LiNi_(0.6)Mn_(0.2)CO_(0.2).2O_2 with the excess of 7% Lithium gave the good performance with the capacity of 115 mAh/gram. first, second, and third level headings (first level heading)