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Peng S, Liu D, Ying Z, An K, Liu C, Feng J, Bai H, Lo KH, Pan H. Industrial-Si-based photoanode for highly efficient and stable water splitting. J Colloid Interface Sci 2024; 671:434-440. [PMID: 38815378 DOI: 10.1016/j.jcis.2024.05.185] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2024] [Revised: 05/21/2024] [Accepted: 05/23/2024] [Indexed: 06/01/2024]
Abstract
Photoelectrochemical (PEC) water splitting is an effective and sustainable method for solar energy harvesting. However, the technology is still far away from practical application because of the high cost and low efficiency. Here, we report a low-cost, stable and high-performing industrial-Si-based photoanode (n-Indus-Si/Co-2mA-xs) that is fabricated by simple electrodeposition. Systematic characterizations such as scanning electron microscopy, X-ray photoelectron spectroscopy have been employed to characterize and understand the working mechanisms of this photoanode. The uniform and adherent dispersion of co-catalyst particles result in high built-in electric field, reduced charge transfer resistance, and abundant active sites. The core-shell structure of co-catalyst particles is formed after the activation process. The reconstructed morphology and modified chemical states of the surface co-catalyst particles improve the separation and transfer of charges, and the reaction kinetics for water oxidation greatly. Our work demonstrates that large-scale PEC water splitting can be achieved by engineering the industrial-Si-based photoelectrode, which shall guide the development of solar energy conversion in the industry.
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Affiliation(s)
- Shuyang Peng
- Department of Electromechanical Engineering, Faculty of Science and Technology, University of Macau, Macao SAR, China
| | - Di Liu
- Institute of Applied Physics and Materials Engineering, University of Macau, Macao SAR, China
| | - Zhiqin Ying
- Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences (CAS), Ningbo City 315201, PR China
| | - Keyu An
- Institute of Applied Physics and Materials Engineering, University of Macau, Macao SAR, China
| | - Chunfa Liu
- Institute of Applied Physics and Materials Engineering, University of Macau, Macao SAR, China
| | - Jinxian Feng
- Institute of Applied Physics and Materials Engineering, University of Macau, Macao SAR, China
| | - Haoyun Bai
- Institute of Applied Physics and Materials Engineering, University of Macau, Macao SAR, China
| | - Kin Ho Lo
- Department of Electromechanical Engineering, Faculty of Science and Technology, University of Macau, Macao SAR, China.
| | - Hui Pan
- Institute of Applied Physics and Materials Engineering, University of Macau, Macao SAR, China; Department of Physics and Chemistry, Faculty of Science and Technology, University of Macau, Macao SAR, China.
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Liu D, Jiang T, Liu D, Zhang W, Qin H, Yan S, Zou Z. Silicon Photoanode Modified with Work-function-tuned Ni@Fe y Ni 1-y (OH) 2 Core-Shell Particles for Water Oxidation. CHEMSUSCHEM 2020; 13:6037-6044. [PMID: 33022839 DOI: 10.1002/cssc.202002049] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2020] [Revised: 10/05/2020] [Indexed: 06/11/2023]
Abstract
The photoelectrochemical (PEC) water splitting determines by the light absorption and charge extraction/injection. Here, we dispersedly modified the core-shell structured Ni@Niy Fe1-y (OH)2 on Si photoanodes and in-situ electrochemically converted it to Ni@Niy Fe1-y OOH to form a Si/SiOx /Ni@Niy Fe1-y OOH assembly, exhibiting the adjustable band bending and catalytic ability in water oxidation depending closely on the composition of Niy Fe1-y OOH. Combining with the island-like dispersed distribution to maximize the light absorption and the Ni@Niy Fe1-y shell as a high work function and a catalytic layer to simultaneously enlarge charge extraction and injection, the Si/SiOx /Ni@Ni0.7 Fe0.3 OOH assembly achieved an onset potential of 1.0 VRHE , a saturated current density of 35.4 mA cm-2 and a more than 50 h stability in an electrolyte with pH 9 under AM1.5G simulated sunlight irradiation. Our findings suggested that regulating the charge energetics at Si-electrolyte interface by discontinuously modifying a composition-adjustable core-shell structure is a potential route to develop highly efficient PEC devices.
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Affiliation(s)
- Duanduan Liu
- Collaborative Innovation Center of Advanced Microstructures, Jiangsu Key Laboratory for Nano Technology, National Laboratory of Solid State Microstructures, Department of Physics, Nanjing University, No. 22, Hankou Road, Nanjing, Jiangsu, 210093, P. R. China
- Jiangsu Key Laboratory of Artificial Functional Materials, Eco-materials and Renewable Energy Research Center (ERERC), College of Engineering and Applied Sciences, Nanjing University, Hankou Road, 22, Nanjing, Jiangsu, 210093, P. R. China
| | - Tong Jiang
- Jiangsu Key Laboratory of Artificial Functional Materials, Eco-materials and Renewable Energy Research Center (ERERC), College of Engineering and Applied Sciences, Nanjing University, Hankou Road, 22, Nanjing, Jiangsu, 210093, P. R. China
| | - Depei Liu
- Collaborative Innovation Center of Advanced Microstructures, Jiangsu Key Laboratory for Nano Technology, National Laboratory of Solid State Microstructures, Department of Physics, Nanjing University, No. 22, Hankou Road, Nanjing, Jiangsu, 210093, P. R. China
- Jiangsu Key Laboratory of Artificial Functional Materials, Eco-materials and Renewable Energy Research Center (ERERC), College of Engineering and Applied Sciences, Nanjing University, Hankou Road, 22, Nanjing, Jiangsu, 210093, P. R. China
| | - Weining Zhang
- Collaborative Innovation Center of Advanced Microstructures, Jiangsu Key Laboratory for Nano Technology, National Laboratory of Solid State Microstructures, Department of Physics, Nanjing University, No. 22, Hankou Road, Nanjing, Jiangsu, 210093, P. R. China
- Jiangsu Key Laboratory of Artificial Functional Materials, Eco-materials and Renewable Energy Research Center (ERERC), College of Engineering and Applied Sciences, Nanjing University, Hankou Road, 22, Nanjing, Jiangsu, 210093, P. R. China
| | - Hao Qin
- Jiangsu Key Laboratory of Artificial Functional Materials, Eco-materials and Renewable Energy Research Center (ERERC), College of Engineering and Applied Sciences, Nanjing University, Hankou Road, 22, Nanjing, Jiangsu, 210093, P. R. China
| | - Shicheng Yan
- Jiangsu Key Laboratory of Artificial Functional Materials, Eco-materials and Renewable Energy Research Center (ERERC), College of Engineering and Applied Sciences, Nanjing University, Hankou Road, 22, Nanjing, Jiangsu, 210093, P. R. China
| | - Zhigang Zou
- Collaborative Innovation Center of Advanced Microstructures, Jiangsu Key Laboratory for Nano Technology, National Laboratory of Solid State Microstructures, Department of Physics, Nanjing University, No. 22, Hankou Road, Nanjing, Jiangsu, 210093, P. R. China
- Jiangsu Key Laboratory of Artificial Functional Materials, Eco-materials and Renewable Energy Research Center (ERERC), College of Engineering and Applied Sciences, Nanjing University, Hankou Road, 22, Nanjing, Jiangsu, 210093, P. R. China
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Lee SA, Lee TH, Kim C, Choi MJ, Park H, Choi S, Lee J, Oh J, Kim SY, Jang HW. Amorphous Cobalt Oxide Nanowalls as Catalyst and Protection Layers on n-Type Silicon for Efficient Photoelectrochemical Water Oxidation. ACS Catal 2019. [DOI: 10.1021/acscatal.9b03899] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Sol A. Lee
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul 08826, Republic of Korea
| | - Tae Hyung Lee
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul 08826, Republic of Korea
| | - Changyeon Kim
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul 08826, Republic of Korea
| | - Min-Ju Choi
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul 08826, Republic of Korea
| | - Hoonkee Park
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul 08826, Republic of Korea
| | - Seokhoon Choi
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul 08826, Republic of Korea
| | - Jinwoo Lee
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology, Daejeon 34141, Republic of Korea
| | - Jihun Oh
- Graduate School of Energy, Environment, Water and Sustainability, Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology, Daejeon 34141, Republic of Korea
| | - Soo Young Kim
- Department of Materials Science and Engineering, Korea University, Seoul 02841, Republic of Korea
| | - Ho Won Jang
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul 08826, Republic of Korea
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