Unraveling the Intrinsic Structures that Influence the Transport of Charges in TiO2 Electrodes,Advanced Energy Materials

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Unraveling the Intrinsic Structures that Influence the Transport of Charges in TiO2 Electrodes
Advanced Energy Materials ( IF 24.4 ) Pub Date : 2017-09-13 , DOI: 10.1002/aenm.201700886
Jiazang Chen ₁ , Hua Bing Tao ₂ , Bin Liu ₂

Affiliation

TiO₂ is by far the most widely used semiconducting materials for electrodes in (photo)‐electrochemical applications owing to its unique electrical and optical properties combined with the chemical and thermal stability as well as nontoxicity. The electronic processes, especially the transport of charges within the electrodes and interfacial charge transfer, are among the most concerned issues to achieve better solar energy utilization. Towards this end, many approaches, including the development of novel electrode configurations and tuning electronic structures have been devoted to facilitate these electronic processes. Despite the intensive studies, some intrinsic structural features in TiO₂ nanostructures, which are usually hidden from the tangible materials characterization techniques, are far from being consciously concerned. In this review, in addition to briefly summarizing the recent progress in TiO₂ nanostructures for (photo)‐electrochemical applications, the intrinsic structural features in TiO₂ nanostructures, together with the challenges and perspectives involving these features, are emphatically discussed. These intrinsic structural features are shown to have a profound influence on the transport of charges within the TiO₂ electrodes and interfacial charge transfer, and thus it is proposed that the charge transport in TiO₂ electrodes can be efficiently promoted by cognizing and making good use of the intrinsic structural features.

中文翻译：

揭示影响TiO2电极中电荷传输的内在结构

TiO ₂由于其独特的电学和光学特性以及化学和热稳定性以及无毒性，是迄今为止在（光）电化学应用中使用最广泛的电极半导体材料。电子过程，特别是电极内电荷的转移和界面电荷转移，是实现更好的太阳能利用最令人关注的问题。为此，已经致力于许多方法，包括开发新颖的电极配置和调整电子结构，以促进这些电子过程。尽管进行了深入的研究，但TiO _2仍具有一些固有的结构特征通常从有形材料表征技术中隐藏的纳米结构，远没有自觉引起关注。在这篇综述中，除了简要概述用于（光）电化学应用的TiO ₂纳米结构的最新进展之外，还着重讨论了TiO ₂纳米结构的内在结构特征，以及涉及这些特征的挑战和观点。这些固有的结构特征显示出对TiO ₂电极内的电荷传输和界面电荷转移具有深远的影响，因此提出了在TiO ₂中的电荷传输。通过认识和充分利用固有的结构特征，可以有效地促进电极的生长。

更新日期：2017-09-13

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