不同方法制备的TiO_2薄膜电极光电性能比较  

Comparison of photoelectrochemical properties of TiO_2 semiconductor electrodes prepared by different methods

作　　者：任志宇[1] 辛柏福[1] 史克英[1] 张新[1] 刘佳[1] 王文佳[1] 井立强[1] 付宏刚[1] 

机构地区：[1]黑龙江大学化学化工与材料学院,黑龙江哈尔滨150080

出　　处：《材料科学与工艺》2006年第6期580-584,共5页Materials Science and Technology

基　　金：国家自然科学基金资助项目(2043103020301006);新世纪人才支持计划资助项目(NCET-04-0341);黑龙江大学杰出青年基金(2005)资助项目

摘　　要：用Doctor-B lade和D ip-Coating方法制备了粒子膜和溶胶-粒子膜两类TiO2纳米晶薄膜电极,利用BAS-100B电化学工作站和IM-6 e交流阻抗仪研究了两种电极的光电化学性能.由光电流和交流阻抗谱(EIS)的测试结果发现,由于引入溶胶,增加了TiO2纳米粒子与基底的附着力,改善了TiO2纳米粒子与基底以及TiO2纳米粒子之间的电性接触,使得溶胶-粒子膜电极的电荷转移电阻远远小于粒子膜电极,提高了溶胶-粒子膜电极的光电流.Two kinds of TiO2 nanostructured porous electrodes, particle-film electrodes and sol-particle-film electrodes, were prepared by means of Doctor-Blade and Dip-Coating methods. The photoelectrochemical properties of as-prepared electrodes were investigated by electrochemical workstation （ BAS - 100B ） and electrical impedance spectroscopy （EIS, IM -6e）. The experimental results of photocurrent and EIS reveal that TiO2 sol introduced to the system can enhance the adhesion between TiO2 nanoparticles and ITO substrate and improve electrical contact between TiO2 nanoparticles and ITO substrate as well as between TiO2 nanoparticles, which result in the charge transfer resistance of the sol-particle-film electrode much smaller than that of the particle-film electrode.

关 键 词：TiO2电极 光电化学性能 EIS 

分 类 号：O643[理学—物理化学]