▎ 摘　　要

Ag3PO4/grapheme co-doped WO3 electrochromic films were prepared by dip-coating on FTO glass substrate and annealed at 300 degrees C for 2 h. The electrochromic properties of the films were tested by means of cyclic voltammetry. The film has an amorphous structure that positive ions and electrons can be easily inserted into the structure. As a result, the film could change the color rapidly. The Ag(3)PO(4 )doped WO3 film had good optical property, i.e. for colour bleached condition, its transmittance is about 62.0%. The Ag3PO4 doped WO3 sol was co-doped with graphene 0.01, 0.05 and 0.1 wt% displayed low electrochromic properties than the film undoped graphene because the reduced graphene oxide (rGO) used in this experiment had oxygen more than 8%, had low electrical property and multilayered structure.