The structure of LiCoO_2 films prepared with the pulsed laser deposition(PLD)method was characterized by XRD,Raman spectroscopy and SEM,and their electrochemical properties were evaluated with cyclic voltammetry(CV).Results showed that the LiCoO_2 films deposited at 600℃have a well-crystallized columnar HT-LiCoO_2 structure with the average grain size less than 100 nm and a strong[001]preferred orientation,while these films contain trace amount of Co_3O_4.CV tests indicated that the HT-LiCoO_2 films have go...