Sb2Se3-based photocathodes for hydrogen production via photoelectrochemical water splitting
作者单位：College of Physics and Optoelectronic EngineeringShenzhen University
会议名称：《第八届新型太阳能材料科学与技术学术研讨会》
会议日期：2021年
学科分类：081702[工学-化学工艺] 08[工学] 0817[工学-化学工程与技术]
关 键 词：Sb2Se3 photocathodes photoelectrochemical water splitting solar-to-hydrogen
摘 要：Photoelectrochemical(PEC) cells using semiconductor electrodes can efficiently absorb solar energy and perform chemical reactions, which are considered as a very attractive strategy to produce renewable, sustainable, and clean hydrogen energy. Antimony selenide(Sb2 Se3) has been widely investigated for constructing PEC involved photocathodes benefitting of its low cost, low toxicity, suitable band gap, superior optoelectronic properties, and outstanding photo-corrosion stability. Since the first Sb2 Se3 photocathode for PEC water splitting reported by Moon’s group in 2017, extensive research with various architectures and engineering efforts(i.e., absorber engineering, interfaces engineering, co-catalyst engineering and tandem engineering) has been focused on this interesting scenario. During a very short period, it achieved a rapid development in terms of photocurrent from 2 mA cm to 30 mA cm, a record Half-cell solar-to-hydrogen conversion efficiency(η) of 3.8% and a record η exceeding 10%. It undoubtedly demonstrates that SbSe and some analogous chalcogenide semiconductors possess great application potential in clean hydrogen production via PEC water splitting.