以锐钛矿相TiO2粉末和氢氧化钠作原料,应用化学合成法,于高温高压反应釜中制备TiO2纳米管.TEM、XRD分析显示,所得产物为锐钛矿相四方结构的TiO2纳米管.恒流充放电、循环伏安法测试表明,该TiO2纳米管首次嵌锂容量达260 mA.h/g,可逆容量高,有希望成为未来一种较好的新型锂离子电池负极材料.
Titanium oxide nanotubes were prepared by hydrothermal treatment of anatase-type TiO_(2) powders and NaOH solution in an autoclave.Transmission Electron Microscopy and X-ray Diffraction showed that the product is anatase-type TiO_(2) nanotubes.The constant charge-discharge current and cyclic voltammetry exhibited the TiO_(2) nanotubes have a large initial lithium insertion capacity of 260 mA·h/g and good reversibility.This study indicates that TiO_(2) nanotubes might be a good negative electrode materical for second lithium battery in the future.
[1]W interM,Besenhard J O,SpahrM E,et al.Insertionelectrode m aterials for rechargeab le lith ium batteries[J].Adv.M ater.,1998,10:725.
[2]Idota Y,Kubota T,M atsufu ji A,et al.Tin-basedamorphous oxide:a h igh capac ity lith ium-ion storagem aterial[J].Sc ience,1997,276:1395~1397.
[3]Poizot D,Laruelle S,G rugeon S,et al.Nano-sizedtransition-m etal oxides as negative-electrode m aterial forlith ium-ion batteries[J],Nature,2000,407:496~499.
[4]Tomoko Kasuga.Form ation of titan ium oxide nanotubesusing chem ical treatm ents and the ir characteristic prop-erties[J].Th in Solid F ilm s,2005,10:141~145.
[5]W ilhelm O,Pratsin is S E.E lectrochem ical perform anceof granu lated titan ia nanopartic les[J].Journal of PowerSources,2004,134:197~201.
[6]Y ing Lan(兰英),L iu Jian-wen(刘建文),Gao Xue-p ing(高学平),et al.E lecrtochem ical lith ium insertionof nanosized TiO2[J].E lectrochem isitry(in Ch inese),2004,10(2):133~136.
[7]Gao Xue-p ing,Zhou Huai-yong.Preparation and E lec-trochem ical characterization of anatase nanorods for lith i-um-Inserting electrode m aterial[J].Phys.chem.,2004,108:2868~2872.
[8]N ie cha geng(聂茶庚),Gong zheng liang(龚正良),Sun lan(孙岚),et al.L ith ium insertion into TiO2(B)nanobelts synthesizedby the“soft chem ical”m ethod[J].E lectrochem istry(in Ch inese).2004,10(3):330~333.
[9]X ie De B in(解德滨),Shen Jun(沈军),Q in Ren X in(秦仁喜),et al.E lectrical property and L i intercalationof carbon aerogels[J].M aterials Review(in Ch inese),2005,5(19):271~273.