Qiu Yongcai, Pan Zhenghui, Chen Haining, Ye Daiqi, Guo Lin, Fan Zhiyong, Yang Shihe
Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control, School of Environment and Energy, South China University of Technology, Guangzhou 510006, China; State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, China.
Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control, School of Environment and Energy, South China University of Technology, Guangzhou 510006, China; Department of Materials Science and Engineering, National University of Singapore, Singapore 117574, Singapore.
Sci Bull (Beijing). 2019 Sep 30;64(18):1348-1380. doi: 10.1016/j.scib.2019.07.017. Epub 2019 Jul 16.
Solar energy driven photoelectrochemical (PEC) water splitting is a clean and powerful approach for renewable hydrogen production. The design and construction of metal oxide based nanoarray photoanodes is one of the promising strategies to make the continuous breakthroughs in solar to hydrogen conversion efficiency of PEC cells owing to their owned several advantages including enhanced reactive surface at the electrode/electrolyte interface, improved light absorption capability, increased charge separation efficiency and direct electron transport pathways. In this Review, we first introduce the structure, work principle and their relevant efficiency calculations of a PEC cell. We then give a summary of the state-of the-art research in the preparation strategies and growth mechanism for the metal oxide based nanoarrays, and some details about the performances of metal oxide based nanoarray photoanodes for PEC water splitting. Finally, we discuss key aspects which should be addressed in continued work on realizing high-efficiency metal oxide based nanoarray photoanodes for PEC solar water splitting systems.
太阳能驱动的光电化学（PEC）水分解是一种用于可再生制氢的清洁且高效的方法。基于金属氧化物的纳米阵列光阳极的设计与构建是使PEC电池在太阳能到氢能转换效率方面不断取得突破的有前景的策略之一，这是因为它们具有若干优势，包括在电极/电解质界面处增强的反应表面、改善的光吸收能力、提高的电荷分离效率以及直接的电子传输途径。在本综述中，我们首先介绍PEC电池的结构、工作原理及其相关的效率计算。然后，我们总结了基于金属氧化物的纳米阵列的制备策略和生长机制的最新研究，以及基于金属氧化物的纳米阵列光阳极用于PEC水分解的性能的一些细节。最后，我们讨论了在继续致力于实现用于PEC太阳能水分解系统的高效基于金属氧化物的纳米阵列光阳极的工作中应解决的关键问题。
