溶胶-凝胶法氧化铈-氧化钛涂层的成膜行为研究

采用溶胶-凝胶法，以Ce（NO3）3·6H2O和Ti（OC3H7）4为前驱体制备了不同铈钛比的CeO2-TiO2复合薄膜．对溶胶的黏度和粒度等物理性质进行了测试，运用循环伏安和双电位阶跃等方法分析了CeO2-TiO2复合薄膜的电化学性能．结果表明：溶胶的黏度和粒度对镀膜效果和薄膜的电化学性能有着直接的影响；n（Ce）：n（Ti）=3：4，溶胶老化时间为62h时，其黏度为4．5×10^-3 Pa·S，粒度为250nm时，在Li^＋离子注入／脱出过程中，薄膜有较快的电化学响应和较高的电荷容量（4．5mC／cm^2），薄膜具有良好的循环可逆性，可在智能窗、锂离子电池等器件中作为离子储存电极．

Formation and Characterization of Cerium-Titanium Oxide Layer via Sol-Gel Method

CeO2-TiO2 sol and films with different Cerium to titanium ratio were prepared. The sol was characterized by viscosity and particle size. The electrochemical properties and optical property of the corresponding film was measured with cyclic voltammetry, chronoamperometry. The results show that the properties of the film are tightly related to the viscosity and particle size of the sol. The best film was made when the Ce/Ti ratio is 3 ： 4,the aging time is 62 h,the viscosity of the sol was 4.5× 10^-3 Pa.s,and the particle size is 250 nm. The ion storage ability of the film is 4.5 mC/cm^2. Summarized data shows that the developed CeO2-TiO2 layer is suitable for ECD applications.