择优取向对氢化TiO2纳米管阵列电化学性能的影响 |
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引用本文: | 李文奕,张王刚,刘一鸣,刘佳孟,郭飞,王红霞.择优取向对氢化TiO2纳米管阵列电化学性能的影响[J].稀有金属材料与工程,2020,49(5):1643-1649. |
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作者姓名: | 李文奕 张王刚 刘一鸣 刘佳孟 郭飞 王红霞 |
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作者单位: | 太原理工大学,太原理工大学,太原理工大学,太原理工大学,太原理工大学,太原理工大学 |
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基金项目: | 山西省自然科学基金资助(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) |
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摘 要: | 氢化TiO_2纳米管阵列具有良好的电化学性能,通过构筑TiO_2001取向结构可进一步提高氢化TiO_2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TiO_2纳米管阵列,并对具有不同取向度的TiO_2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TiO_2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TiO_2纳米管阵列放电比容量达到了17.31mF·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。
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关 键 词: | 氢化 TiO2纳米管阵列 <001>择优取向 电化学性能 |
收稿时间: | 2019/3/5 0:00:00 |
修稿时间: | 2019/3/21 0:00:00 |
The effect of preferred orientation on the electrochemical performance of hydrogenated TiO2 nanotube arrays |
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Abstract: | 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 via adjusting the Glycol-H2O ratio in anodization process and the subsequent annealing atmosphere. 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 was 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 can attribute to the synergetic effects of hydrogenation and <001> oriented structure. |
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Keywords: | Hydrgenation TiO2 nanotube arrays <001> preferred orientation electrochemical performance |
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