LiLaPO_4-coated LiINi_(0.5)Co_(0.2)Mn_(0.3)]O_2 and AlF_3-coated LiINi_(0.5)Co_(0.2)Mn_(0.3)]O_2 blend composite for lithium ion batteries

摘要

A blended composite of LiLaPO_4-coated LiINi_(0.5)Co_(0.2)Mn_(0.3)]O_2 and AIF_3-coated LiINi_(0.5)Co_(0.2)Mn_(0.3)]O_2 was tested as the cathode of lithium secondary batteries. The rate capability, cyclic performance, and thermal stability of the blended electrode were characterized and compared with pristine, AlF_3-coated, and LiLaPO_4-coated electrodes. The blended sample showed good cyclic performance and thermal stability, which implies that blending these two cathode coatings were effective in obtaining their advantages and lessening their weaknesses.