tio2纳米管的制备表征及储氢性能-研究.doc

PAGE PAGE IV TiO2纳米管的制备及储氢性能研究 摘要 作为一种新型的清洁能源，氢的廉价制取、安全高效储存、与输送及规模应用是当今研究的重点课题，而氢的储存是氢能应用的关键。优良的储氢材料是突破储氢技术的重点。本文主要研究TiO2纳米管的制备及其储氢性能。①采用阳极氧化法分别在有机和无机电解液中制备TiO2纳米管，通过SEM、XRD、EDS分析表征其表面形貌、组成成份，结果显示有机溶剂中制备的TiO2纳米管管径大约180nm左右；无机溶剂中制备出TiO2纳米管管径在70-100nm左右，管长在300nm以内。②利用脉冲电沉积技术将PbO2沉积在TiO2纳米管上，通过SEM、XRD、EDS对其进行表征。应用循环伏安和充放电实验研究了沉积PbO2前后TiO2纳米管的储氢性能。结果表明，TiO2纳米管具有储氢性能；储氢量为0.01wt%，表面沉积一层PbO2后储氢量有所提高达到0.1wt%。 关键词：TiO2纳米管；阳极氧化；储氢 The study of Preparation and hydrogen-storage capacity of TiO2 nanotubes Abstract Hydrogen becomes a new-type cleaning energy, hydrogen storage has become one of most important subjects currently. The paper mainly study on the preparation and the hydrogen-storage performance of TiO2 nanotube .①The TiO2 nanotube was prepared in the organic and inorganic solution by anodization . Morphology、structure and ingredients was characterized by SEM、XRD、EDS. The results show that the diameter of TiO2 nanotube in the organic solution and inorganic solution is about 180nm and 75nm ,respectively, length is less than 300nm in inorganic solution. ②PbO2 is deposited on the substrate of TiO2 nanotube by the pulse electrodeposition method. And the sample was detected by SEM、XRD、EDS. The hydrogen-storage performance of TiO2 nanotube is discussed through the Cyclic Voltammetry and charge- discharge cycling. The result indicates that TiO2 nanotube possess storage performance; The hydrogen-storage capacities of the TiO2 nanotube was 0.01wt%. TiO2NT/ PbO2 hydrogen-storage capacities was 0.1 wt%. Key words: TiO2 nanotube；anodize；hydrogen-storage 目　　录 摘要 HYPERLINK \l _Toc1615 Ⅰ HYPERLINK \l _Toc8398 Abstract Ⅱ TOC \o 1-3 \h \u HYPERLINK \l _Toc18416 第一章 绪论 1 HYPERLINK \l _Toc6022 1.1引言 1 HYPERLINK \l _Toc23742 1.2储氢材料的研究现状 2 HYPERLINK \l _Toc25996 1.2.1储氢合金 2 HYPERLINK \l _Toc9432 1.2.2金属有机骨架材料 3 1.2.3金属氢化物储氢材料 4 1.2.4碳质储氢材料 4 HYPERLINK \l _Toc2272 1.3 TiO2纳米管 5 HYPERLINK \l _Toc7421 1.3.1 TiO2纳米管的制备 6 HYPERLINK \l _Toc7421 1.3.2 TiO2纳米管的形成机理 9 H