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Photoinduced Electron Transfer Between Mono-6-p-nitrobenzoyl-ˉ-cyclodextrin and Adamantanamine-Cn-Co/Ni-porphyrins
Hui Huang*,Wen-kui Zhang,Yong-ping Gan,Lei Zhang,Chen Wang
Author NameAffiliationE-mail
Hui Huang* College of Chemical Engineering and Materials Science, Zhejiang University of Technology, Hangzhou 310032, China hhui@zjut.edu.cn, Tel./Fax: +86-571-88320394 
Wen-kui Zhang College of Chemical Engineering and Materials Science, Zhejiang University of Technology, Hangzhou 310032, China  
Yong-ping Gan College of Chemical Engineering and Materials Science, Zhejiang University of Technology, Hangzhou 310032, China  
Lei Zhang College of Chemical Engineering and Materials Science, Zhejiang University of Technology, Hangzhou 310032, China  
Chen Wang College of Chemical Engineering and Materials Science, Zhejiang University of Technology, Hangzhou 310032, China  
Abstract:
Perovskite-type SrTiO3 nanoparticles were synthesized by direct hydrolysis-precipitation method and were employed to modify the surface of the carbon nanotubes to form a SrTiO3/CNTs composite. The photoelectrochemical lithium insertion characteristics of the SrTiO3/CNTs composite under xenon light irradiation were investigated. The results show that the light irradiation has little influence on the specific capacity of the CNTs electrode. However, for the SrTiO3/CNTs electrode irradiated by light, the lithium insertion capacity reaches about 251 mAh/g, much higher than that without light irradiation (170 mAh/g). Cyclic voltammetry test reveals that the light irradiation can remarkably increase the reaction currents of lithium insertion and extraction. This may be attributed to the photo-excited intercalation of Li-ions into the CNTs by the SrTiO3 photocatalyst when irradiated by light.
Key words:  Carbon nanotubes, Strontium titanate, Photo-electrochemical characteristics, Li-ion batteries
FundProject:
表面修饰SrTiO3光催化剂纳米碳管的光电化学嵌锂特性
黄辉*    ,张文魁  ,甘永平  ,张蕾  ,王琛
摘要:
采用直接水解沉淀的方法制备了钙钛矿型SrTiO3纳米粒子,并将其修饰在纳米碳管表面形成SrTiO3/CNTs纳米复合材料,研究了SrTiO3/CNTs电极在氙灯照射下的光电化学嵌锂特性.实验结果表明,光照射对CNTs电极的嵌锂容量影响不大,而SrTiO3/CNTs电极受光照时的嵌锂容量高达251 mAh/g,远高于无光照下的嵌锂容量(170 mAh/g).循环伏安测试也表明光照射可显著提高嵌脱锂反应电流.这可归因于SrTiOa光催化剂受光照射而诱发的纳米碳管嵌锂反应.
关键词:  纳米碳管  钛酸锶  光电化学特性  锂离子电池
DOI:10.1360/cjcp2006.19(5).428.5
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