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Enabling an integrated tantalum nitride photoanode to approach the theoretical photocurrent limit for solar water splitting
Liu, Guiji1,2; Ye, Sheng1; Yan, Pengli1; Xiong, Fengqiang1; Fu, Ping1,2; Wang, Zhiliang1,2; Chen, Zheng1,2; Shi, Jingying1; Li, Can1
Source PublicationENERGY & ENVIRONMENTAL SCIENCE
2016
ISSN1754-5692
DOI10.1039/c5ee03802b
Volume9Issue:4Pages:1327-1334
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences ; Technology ; Life Sciences & Biomedicine
WOS SubjectChemistry, Multidisciplinary ; Energy & Fuels ; Engineering, Chemical ; Environmental Sciences
WOS Research AreaChemistry ; Energy & Fuels ; Engineering ; Environmental Sciences & Ecology
WOS KeywordHOLE-STORAGE-LAYER ; CHARGE-TRANSPORT ; TA3N5 PHOTOANODE ; OXYGEN EVOLUTION ; PHOTOELECTRODES ; SPECTROSCOPY ; PHOTOVOLTAGE ; ELECTRODES ; EFFICIENCY
AbstractThe feasibility of photoelectrochemical (PEC) water-splitting cells relies on the development of high-performance photoanodes. Significant progress has been made in the discovery of narrow bandgap semiconductors as promising photoanodes. However, the rational design of photoanode architecture that brings the potentials of narrow bandgap semiconductors into fruition for efficient PEC water oxidation still remains a key challenge. Herein, we show a highly efficient photoanode system consisting of a tantalum nitride (Ta3N5) semiconductor for light harvesting, hole-storage layers (Ni(OH)(x)/ferrhydrite) that mediate interfacial charge transfer from Ta3N5 to coupled molecular catalysts (Co cubane and Ir complex) for water oxidation and a TiOx blocking layer that reduces the surface electron-hole recombination. The integrated Ta3N5 photoanode exhibits a record photocurrent of 12.1 mA cm(-2) at 1.23 V vs. the reversible hydrogen electrode (RHE), which is nearly its theoretical photocurrent limit under sunlight (12.9 mA cm(-2)), suggesting that almost each pair of photogenerated charge carriers in Ta3N5 has been efficiently extracted and collected for solar water splitting.
Language英语
WOS IDWOS:000374351200019
PublisherROYAL SOC CHEMISTRY
Citation statistics
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/170799
Collection中国科学院大连化学物理研究所
Corresponding AuthorShi, Jingying; Li, Can
Affiliation1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian Natl Lab Clean Energy,Collaborat Innovat C, Zhongshan Rd 457, Dalian 116023, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Liu, Guiji,Ye, Sheng,Yan, Pengli,et al. Enabling an integrated tantalum nitride photoanode to approach the theoretical photocurrent limit for solar water splitting[J]. ENERGY & ENVIRONMENTAL SCIENCE,2016,9(4):1327-1334.
APA Liu, Guiji.,Ye, Sheng.,Yan, Pengli.,Xiong, Fengqiang.,Fu, Ping.,...&Li, Can.(2016).Enabling an integrated tantalum nitride photoanode to approach the theoretical photocurrent limit for solar water splitting.ENERGY & ENVIRONMENTAL SCIENCE,9(4),1327-1334.
MLA Liu, Guiji,et al."Enabling an integrated tantalum nitride photoanode to approach the theoretical photocurrent limit for solar water splitting".ENERGY & ENVIRONMENTAL SCIENCE 9.4(2016):1327-1334.
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