https://scholars.lib.ntu.edu.tw/handle/123456789/638217
標題: | Efficient Solar-Driven Water Splitting Enabled by Perovskite Photovoltaics and a Halogen-Modulated Metal-Organic Framework Electrocatalyst | 作者: | Li, Xintong Wu, Xin Li, Bo Zhang, Shoufeng Liu, Yizhe Li, Zhen Zhang, Dong Wang, Xue Sun, Qidi Gao, Danpeng Zhang, Chunlei Huang, Wei-Hsiang CHU-CHEN CHUEH Chen, Chi Liang Yang, Shangfeng Xiao, Shuang Wang, Zilong Zhu, Zonglong |
關鍵字: | ligand engineering | metal−organic framework | oxygen evolution | solar-to-hydrogen efficiency | water splitting | 公開日期: | 12-十二月-2023 | 卷: | 17 | 期: | 23 | 來源出版物: | ACS Nano | 摘要: | Solar-driven water splitting powered by photovoltaics enables efficient storage of solar energy in the form of hydrogen fuel. In this work, we demonstrate efficient solar-to-hydrogen conversion using perovskite (PVK) tandem photovoltaics and a halogen-modulated metal-organic framework (MOF) electrocatalyst. By substituting tetrafluoroterephthalate (TFBDC) for terephthalic (BDC) ligands in a nickel-based MOF, we achieve a 152 mV improvement in oxygen evolution reaction (OER) overpotential at 10 mA·cm2. Through X-ray photoelectron spectroscopy (XPS), X-ray adsorption structure (XAS) analysis, theoretical simulation, and electrochemical results, we demonstrated that the introduction of fluorine atoms enhanced the intrinsic activity of Ni sites as well as the transfer property and accessibility of the MOF. Using this electrocatalyst in a bias-free photovoltaic electrochemical (PV-EC) system with a PVK/organic tandem solar cell, we achieve 6.75% solar-to-hydrogen efficiency (ηSTH). We also paired the electrocatalyst with a PVK photovoltaic module to drive water splitting at 206.7 mA with ηSTH of 10.17%. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/638217 | ISSN: | 19360851 | DOI: | 10.1021/acsnano.3c05583 |
顯示於: | 化學工程學系 |
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