通过光电化学(PEC)电池将太阳能收集和储存为氢燃料,为未来的能源需求提供了一条清洁和可再生的途径。在多种常用材料中赤铁矿(α-Fe₂O₃)由于其来源丰富、价格低廉、优异的光稳定性等特点,近几十年来一直是研究热点。对PEC水分解用赤铁矿光阳极的最新进展进行了综述。首先,介绍了掺杂手段提高赤铁矿体相电导率。其次,介绍了负载助催化剂和沉积表面钝化层改善赤铁矿表面反应的有效途径。以及引入中间层促进界面传输3个方面进行了综述。展望了PEC水分解用赤铁矿光电极的发展前景和面临的主要挑战。

The collection and storage of solar energy into hydrogen fuel via photo electrochemistry (PEC) cells offers a clean and renewable route to future energy needs.Among a variety of commonly used materials,hematite (α-Fe₂O₃) has been a research hotspot in recent decades due to its abundant source,low price and excellent photostability.This paper presents a review of latest advances in hematite photoanodes for PEC in water hydrolysis.Firstly,it presents the doping means for improving the conductivity of hematite bulk phase.Secondly,it presents effective ways to improve the surface reaction of hematite by loading co-catalysts and depositing surface passivation layers.Finally,it introduces the addition of an intermediate layer to promote interfacial transport.The development prospects of hematite photoanodes for PEC in water hydrolysis and main challenges faced are also foreseen.

李春雷(1963-),男,学士,教授级高级工程师,研究方向为固废的回收利用、光电催化。