WO₃/Cu composite film electrodes were synthesized by hydrothermal combined electrodeposition method. Characterization of samples was conducted by SEM, XRD and XPS, which showed WO₃/Cu composite films had been synthesized. The diffusion coefficient, reversibility, response time, coloration efficiency and transmission rate of the samples were obtained by electrochemical and spectral measurements. The photocurrent and photoelectric catalysis degradation efficiency of the samples were obtained by photocurrent and photoelectric catalysis measurements. The WO₃/Cu composite films improve electrochromic performance, photocurrent and photoelectric catalytic activity compared with pure WO₃ nanoblocks, and the WO₃/Cu composite film obtained by depositing Cu nanoparticles at 50 s shows the highest electrochromic performance, photocurrent and photoelectric catalytic activity. Meanwhile, the direct photocatalytic and electric catalytic activity of the composite film are also discussed. The combined effects of the lower band gap and the Schottky junction lead to significant enhancement in the electrochromic and photoelectrochemical properties of the WO₃/Cu composite film.

采用水热联合电沉积法合成了WO _{3 /Cu复合膜电极。}通过SEM、XRD和XPS对样品进行表征，结果表明合成了WO _{3 /Cu复合薄膜。}通过电化学和光谱测量获得样品的扩散系数、可逆性、响应时间、着色效率和透射率。通过光电流和光电催化测量获得样品的光电流和光电催化降解效率。与纯WO ₃纳米块相比， WO ₃ /Cu复合薄膜提高了电致变色性能、光电流和光电催化活性，并且WO ₃50 s沉积Cu纳米颗粒获得的/Cu复合薄膜表现出最高的电致变色性能、光电流和光电催化活性。同时，还讨论了复合膜的直接光催化和电催化活性。较低带隙和肖特基结的综合作用导致WO ₃ /Cu复合膜的电致变色和光电化学性能显着增强。