Efficient Hole Extraction from a Hole‐Storage‐Layer‐Stabilized Tantalum Nitride Photoanode for Solar Water Splitting |
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| Authors: | Guiji Liu Ping Fu Lingyu Zhou Pengli Yan Chunmei Ding Dr. Jingying Shi Prof. Can Li |
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| Affiliation: | 1. State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian National Laboratory for Clean Energy, 457 Zhongshan Road, Dalian 116023 (China).;2. University of Chinese Academy of Sciences, Beijing, 100049 (P. R. China);3. School of Chemical Engineering & Technology, Harbin Institute of Technology, Harbin, 150001 (P. R. China) |
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| Abstract: | ![]()
One of the major hurdles that impedes the practical application of photoelectrochemical (PEC) water splitting is the lack of stable photoanodes with low onset potentials. Here, we report that the Ni(OH)x/MoO3 bilayer, acting as a hole‐storage layer (HSL), efficiently harvests and stores holes from Ta3N5, resulting in at least 24 h of sustained water oxidation at the otherwise unstable Ta3N5 electrode and inducing a large cathodic shift of ≈600 mV in the onset potential of the Ta3N5 electrode. |
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| Keywords: | onset potential photoelectrochemistry photostability tantalum nitride water splitting |
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