【作者】 袁广中； 王慷慨； 李铭； 伍枝正； 程波； 刘涌； 宋晨路； 韩高荣；

【Author】 YUAN Guangzhong;WANG Kangkai;Li Ming;WU Zhizheng;CHENG Bo;LIU Yong;SONG Chenlu;HAN Gaorong;State Key Laboratory of Silicon Materials and Department of Materials Science and Engineering,Zhejiang University;Key Laboratory of Advanced Materials and Applications for Batteries of Zhejiang Province;

【机构】 浙江大学材料科学与工程学院硅材料国家重点实验室； 浙江省电池新材料与应用技术研究重点实验室；

【摘要】 采用溶胶凝胶法,以钛酸四丁酯,乙酰丙酮和水杨酸做前驱体,溶于乙醇,在石英基板上旋涂后通过900℃退火处理,制备了电阻率低至¹×10^-2Ω·cm的TiO₂-C复合薄膜。复合薄膜中TiO₂处于非晶态,石墨结晶C镶嵌其中起到了提高导电性的结果。通过高分辨透射电子显微镜和拉曼光谱等研究了复合薄膜的结构,并且研究了热处理时间对复合薄膜结构和性能的影响。更多还原

【Abstract】 TiO₂- C composite films are prepared by a sol-gel process.Tetrabutyl titanate,acetylacetone and salicylic acid are dissolved in ethanol as precursors and films are spin coated on quartz substrates.After annealed in vacuum at900 ℃,TiO₂-C nano-composite film with an excellent electrical resistance as low as ¹×10^-2Ω·cm are prepared.TiO₂is amorphous while C is nano-graphite crystallized in the composite film.The nano-graphite in the film facilitate the conductivity of the film.With the help of High resolution transmission electron microscope,Raman spectra,etc.We have studied the structures and the effects of annealing time on the TiO₂- C nano-composite film.更多还原