LAUSR

A comparative study refers to textural and electrochemical properties of different Li-ion battery LiNi0.80Co0.15Al0.05O2 cathode materials (denoted as NCA; being prepared by the sol-gel method using EDTA, glycine and citric acid as complexing agents) have been reported in this work. The textural properties of the as-prepared samples were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM) and powder X-ray diffraction (XRD). Characterization results display that the resultant NCA-EDTA cathode shows the best structural integrity, the best layer structure, and the largest lattice spacing. The initial discharge capacity of the NCA-EDTA electrode synthesized by using EDTA as complexing agents is much larger than those for NCA-glycine and NCA-citric acid. Meanwhile, the resultant NCA-EDTA cathode also exhibits more excellent cycle ability than those of NCA-glycine and NCA-citric acid. In addition, compared with NCA-glycine and NCA-citric acid samples, the NCA-EDTA still shows the largest Li + diffusion coefficient. All these advantages related to the electrochemistry may come down to the structural advantages of the NCAEDTA under the assistant of EDTA in the synthesis processes.