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在O3 /O2 气氛中采用 35 5nm激光烧蚀金属钛靶的反应性沉积薄膜方法 ,成功地在镀ITO膜的玻璃基片上制备了纳米锐钛矿相TiO2 薄膜电极 .用循环伏安法研究了在Li/TiO2 电池中TiO2 薄膜电极的电化学嵌入Li离子的行为 .由现场快速紫外可见吸收光谱实时监测TiO2 薄膜电极的显色特性 ,在波长 42 0和 6 5 0nm附近出现 2个明显的吸收峰 ,并发现TiO2 薄膜电极的吸收谱的涨落过程与Li离子的嵌入和脱嵌过程具有相关性与可逆性 ,表明该纳米TiO2 薄膜电极具有高质量的光电化学性能 .
A nanosized anatase TiO2 thin film electrode was successfully fabricated on a glass substrate coated with ITO film using a reactive deposition thin film method of 35 5nm laser ablation of a titanium metal target in an O3 / O2 atmosphere. By cyclic voltammetry, Electrochemical Insertion of Li Ion into TiO2 Thin Film Electrodes in Li / TiO2 Batteries The colorimetric properties of TiO2 thin film electrodes were monitored in situ by fast UV-visible absorption spectroscopy with two distinct absorptions around 42 0 and 65 0 nm It was found that the fluctuation of the absorption spectrum of TiO2 thin film electrode was correlated and reversible with the embedding and deintercalation processes of Li ions, indicating that the TiO2 thin film electrode possesses high quality photoelectrochemical properties.