Synthesis and electrochemical properties of nanorod-shaped LiMn_(1.5)Ni_(0.5)O_4 cathode materials for lithium-ion batteries

摘要

Nanorod-shaped LiMn_(1.5)Ni_(0.5)O_4 cathode powders were synthesized by a co-precipitation method with oxalic acid. Their structures and electrochemical properties were characterized by SEM, XRD and gal-vanostatic charge-discharge tests. The resulting nanorod-shaped LiMn_(1.5)Ni_(0.5)O_4 cathode active materials delivered a specific discharge capacity of 126 mAh g~(-1) at 0.1 C rate. These active materials exhibited better capacity retention and higher rate performance than those of LiMn_(1.5)Ni_(0.5)O_4 cathode powders with irregular morphology.