One-dimensional TiO2 nanotube array photoanode for a microfluidic all-vanadium photoelectrochemical cell for solar energy storage,Catalysis Science & Technology

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One-dimensional TiO2 nanotube array photoanode for a microfluidic all-vanadium photoelectrochemical cell for solar energy storage
Catalysis Science & Technology ( IF 4.4 ) Pub Date : 2020-05-26 , DOI: 10.1039/d0cy00342e
Yingying Lin _{1,

2,

3,

4,

5} , Hao Feng _{3,

4,

5,

6,

7} , Rong Chen _{1,

2,

3,

4,

5} , Biao Zhang _{1,

2,

3,

4,

5} , Liang An _{4,

8,

9,

10}

Affiliation

In this work, a highly efficient TiO₂ nanotube array photoanode prepared by anodizing treatment of titanium foil is developed for an all-vanadium photoelectrochemical cell with a miniaturized design for solar energy storage. The highly ordered structure and miniaturization design have the intrinsic advantages of not only providing a large active surface area and plentiful pores but also enhancing mass and electron transport. Consequently, the developed photoanode exhibits both good photoresponse and operation stability under irradiation. Besides, the solar energy storage performance of the microfluidic all-vanadium photoelectrochemical cell with the developed TiO₂ nanotube array photoanode is evaluated under various light intensities and vanadium ion concentrations. The performances of TiO₂ nanotube array photoanodes prepared with different anodizing voltages are also investigated. The obtained results show that an increase in both the light intensity and vanadium ion concentration can improve the performance in terms of photocurrent density and vanadium ion conversion rate. The photoanodes prepared at higher anodizing voltages have larger active surface area and photocatalyst loading, thus leading to the improved performance.

中文翻译：

用于太阳能的微流全钒光电化学电池的一维TiO2纳米管阵列光电阳极

在这项工作中，开发了一种通过对钛箔进行阳极氧化处理而制备的高效TiO ₂纳米管阵列光电阳极，用于具有微型化设计的太阳能存储的全钒光电化学电池。高度有序的结构和小型化设计具有以下固有优势：不仅提供了较大的有效表面积和丰富的孔，而且还增强了质量和电子传输能力。因此，显影的光阳极在照射下显示出良好的光响应和操作稳定性。此外，已开发的TiO ₂微流控全钒光电化学电池的太阳能存储性能在各种光强度和钒离子浓度下评估纳米管阵列光电阳极。还研究了不同阳极氧化电压制备的TiO ₂纳米管阵列光阳极的性能。所获得的结果表明，光强度和钒离子浓度的增加都可以改善光电流密度和钒离子转化率方面的性能。在较高的阳极氧化电压下制备的光阳极具有较大的活性表面积和光催化剂负载，因此导致改善的性能。

更新日期：2020-07-06

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