择优取向对氢化TiO2纳米管阵列电化学性能的影响  

Effect of Preferred Orientation on the Electrochemical Performance of Hydrogenated TiO2 Nanotube Arrays

作　　者：李文奕 张王刚[2,4] 刘一鸣 刘佳孟[2,4] 郭飞 王红霞 Li Wenyi;Zhang Wanggang;Liu Yiming;Liu Jiameng;Guo Fei;Wang Hongxia(Taiyuan University of Technology,Taiyuan 030024,China;Key Laboratory of Interface Science and Engineering in Advanced Materials,Ministry of Education,Taiyuan 030024,China;Shanxi Academy of Analytical Sciences,Taiyuan 030006,China)

机构地区：[1]太原理工大学材料科学与工程学院,山西太原030024 [2]新材料界面科学与工程教育部重点实验室,山西太原030024 [3]山西省分析科学院,山西太原030006 [4]太原理工大学,山西太原030024

出　　处：《稀有金属材料与工程》2020年第5期1643-1649,共7页Rare Metal Materials and Engineering

基　　金：山西省自然科学基金(201801D221140,201801D121099);山西省人才专项(优秀人才科技创新)(201705D2011007);山西省科学仪器设备共享服务平台项目(201805D141005)。

摘　　要：氢化TiO2纳米管阵列具有良好的电化学性能,通过构筑TiO2<001>取向结构可进一步提高氢化TiO2纳米管阵列的电化学性能。本研究以Ti为基底,通过调节阳极氧化法醇-水配比及高温退火工艺的方法制备了具有不同取向程度的锐钛矿型TiO2纳米管阵列,并对具有不同取向度的TiO2纳米管阵列进行相同工艺参数电化学氢化处理,利用SEM、XPS、XRD、TEM及电化学测试等表征手段研究了制备工艺对取向结构的影响以及取向结构对氢化TiO2纳米管阵列电化学性能的影响规律和作用机理。具有高度<001>择优取向结构的氢化TiO2纳米管阵列放电比容量达到了17.31 mF·cm-2,其优异的电化学性能主要归功于氢化与取向结构的协同效应。Hydrogenated TiO2 nanotube arrays exhibit good electrochemical performance,which can be further improved by constructing anatase<001>preferred orientation structure within TiO2 nanotube arrays.The anatase TiO2 nanotube arrays with different degrees of<001>orientation were prepared via adjusting the Glycol-H2O ratio in anodization process and the subsequent annealing.After electrochemical hydrogenation,the as-prepared samples with different degrees of<001>orientation were characterized by SEM,XPS,XRD,TEM and electrochemical measurements.The effects of preparation process on<001>orientated structure were investigated.The mechanism of the enhanced electrochemical properties by orientated structure orientation was discussed.The hydrogenated TiO2 nanotube arrays with highly<001>orientation delivered the charge specific capacitance as high as 17.31 mF·cm-2,which is attributed to the synergetic effects of hydrogenation and<001>oriented structure.

关 键 词：氢化 TIO2纳米管阵列 <001>择优取向 电化学性能 

分 类 号：TN304[电子电信—物理电子学]