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DOI	10.1039/d0ee02397c
	Earth-abundant Cu-based metal oxide photocathodes for photoelectrochemical water splitting
	Li C.; He J.; Xiao Y.; Li Y.; Delaunay J.-J.
发表日期	2020
ISSN	17545692
起始页码	3269
结束页码	3306
卷号	13 期号:10
英文摘要	Photoelectrochemical (PEC) solar-fuel conversion is a promising approach to converting energy from sunlight into storable chemical fuels. The development of low cost, highly efficient, and stable semiconductor-based photoelectrodes is a key step in realizing economically viable PEC energy conversion on a global scale. The p-type Cu-based metal oxides possess a wide range of bandgap values and favorable band edges relative to the water splitting redox couples, thus providing promising candidates for PEC solar conversion applications. However, the improvement of the PEC performance for the binary and ternary copper-based metal oxides is severely hindered by the chemical instability and/or unsatisfactory optoelectronic properties. Thus, a fundamental understanding of the key limitations, improvement strategies, and progress of these materials is critical to design high performance and stable photocathodes. Here, we outline the development of p-type binary and ternary Cu-based metal oxide photocathodes, discuss the merits and major challenges of these p-type materials, and present the latest research effort in modifying the materials towards high-performance photocathodes. The critical strategies that have been successfully employed for Cu2O-based solar cells and photocathodes are emphasized to offer guidelines to advance emerging Cu-based photocathodes. Emphasis is placed on the determination of the faradaic efficiency and onset potential of hydrogen generation for the modified photocathodes to properly evaluate the performance and design tandem devices that achieve bias-free solar water splitting. Furthermore, perspectives regarding emerging issues yet to be addressed for the development of Cu-based metal oxide photocathodes with high photocurrent and photovoltage are also presented. © The Royal Society of Chemistry.
英文关键词	Conversion efficiency; Costs; Field emission cathodes; Hydrogen production; Metals; Oxide minerals; Photocathodes; Photocurrents; Photoelectrochemical cells; Solar cells; Chemical instability; Faradaic efficiencies; Hydrogen generations; Improvement strategies; Optoelectronic properties; Photoelectrochemical water splitting; Photoelectrochemicals; Solar water splitting; Copper oxides
语种	英语
来源期刊	Energy & Environmental Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/189522
作者单位	School of Materials, Sun Yat-sen University, Guangzhou, 510275, China; Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu, 610054, China; School of Engineering, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8656, Japan
推荐引用方式 GB/T 7714	Li C.,He J.,Xiao Y.,et al. Earth-abundant Cu-based metal oxide photocathodes for photoelectrochemical water splitting[J],2020,13(10).
APA	Li C.,He J.,Xiao Y.,Li Y.,&Delaunay J.-J..(2020).Earth-abundant Cu-based metal oxide photocathodes for photoelectrochemical water splitting.Energy & Environmental Science,13(10).
MLA	Li C.,et al."Earth-abundant Cu-based metal oxide photocathodes for photoelectrochemical water splitting".Energy & Environmental Science 13.10(2020).