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Peng S, Liu D, An K, Ying Z, Chen M, Feng J, Lo KH, Pan H. n-Si/SiO x /CoO x -Mo Photoanode for Efficient Photoelectrochemical Water Oxidation. Small 2024; 20:e2304376. [PMID: 37649206 DOI: 10.1002/smll.202304376] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Revised: 07/29/2023] [Indexed: 09/01/2023]
Abstract
Green hydrogen is considered to be the key for solving the emerging energy and environmental issues. The photoelectrochemical (PEC) process for the production of green hydrogen has been widely investigated because solar power is clean and renewable. However, mass production in this way is still far away from reality. Here, a Si photoanode is reported with CoOx as co-catalyst for efficient water oxidation. It is found that a high photovoltage of 350 mV can be achieved in 1.0 m K3 BO3 . Importantly, the photovoltage can be further increased to 650 mV and the fill factor of 0.62 is obtained in 1.0 m K3 BO3 by incorporating Mo into CoOx . The Mo-incorporated photoanode is also highly stable. It is shown that the incorporation of Mo can reduce the particle size of co-catalyst on the Si surface, improve the particle-distribution uniformity, and increase the density of particles, which can effectively enhance the light absorption and the electrochemical active surface area. Importantly, the Mo-incorporation results in high energy barrier in the heterojunction. All of these factors are attributed to improved the PEC performance. These findings may provide new strategies to maximize the solar-to-fuel efficiency by tuning the co-catalysts on the Si surface.
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Affiliation(s)
- Shuyang Peng
- Department of Electromechanical Engineering, Faculty of Science and Technology, University of Macau, Macao S. A. R., 999078, China
| | - Di Liu
- Institute of Applied Physics and Materials Engineering, University of Macau, Macao S. A. R., 999078, China
| | - Keyu An
- Institute of Applied Physics and Materials Engineering, University of Macau, Macao S. A. R., 999078, China
| | - Zhiqin Ying
- Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences (CAS), Ningbo City, 315201, P. R. China
| | - Mingpeng Chen
- Yunnan Key Laboratory for Micro/Nano Materials & Technology, School of Materials and Energy, Yunnan University, Kunming, 650091, China
| | - Jinxian Feng
- Institute of Applied Physics and Materials Engineering, University of Macau, Macao S. A. R., 999078, China
| | - Kin Ho Lo
- Department of Electromechanical Engineering, Faculty of Science and Technology, University of Macau, Macao S. A. R., 999078, China
| | - Hui Pan
- Institute of Applied Physics and Materials Engineering, University of Macau, Macao S. A. R., 999078, China
- Department of Physics and Chemistry, Faculty of Science and Technology, University of Macau, Macao S. A. R., 999078, China
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Gao D, Li R, Chen X, Chen C, Wang C, Zhang B, Li M, Shang X, Yu X, Gong S, Pauporté T, Yang H, Ding L, Tang J, Chen J. Managing Interfacial Defects and Carriers by Synergistic Modulation of Functional Groups and Spatial Conformation for High-Performance Perovskite Photovoltaics Based on Vacuum Flash Method. Adv Mater 2023; 35:e2301028. [PMID: 37026996 DOI: 10.1002/adma.202301028] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Revised: 04/03/2023] [Indexed: 06/09/2023]
Abstract
Interfacial nonradiative recombination loss is a huge barrier to advance the photovoltaic performance. Here, one effective interfacial defect and carrier dynamics management strategy by synergistic modulation of functional groups and spatial conformation of ammonium salt molecules is proposed. The surface treatment with 3-ammonium propionic acid iodide (3-APAI) does not form 2D perovskite passivation layer while the propylammonium ions and 5-aminopentanoic acid hydroiodide post-treatment lead to the formation of 2D perovskite passivation layers. Due to appropriate alkyl chain length, theoretical and experimental results manifest that COOH and NH3 + groups in 3-APAI molecules can form coordination bonding with undercoordinated Pb2+ and ionic bonding and hydrogen bonding with octahedron PbI6 4- , respectively, which makes both groups be simultaneously firmly anchored on the surface of perovskite films. This will strengthen defect passivation effect and improve interfacial carrier transport and transfer. The synergistic effect of functional groups and spatial conformation confers 3-APAI better defect passivation effect than 2D perovskite layers. The 3-APAI-modified device based on vacuum flash technology achieves an alluring peak efficiency of 24.72% (certified 23.68%), which is among highly efficient devices fabricated without antisolvents. Furthermore, the encapsulated 3-APAI-modified device degrades by less than 4% after 1400 h of continuous one sun illumination.
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Affiliation(s)
- Deyu Gao
- Macao Institute of Materials Science and Engineering (MIMSE), Faculty of Innovation Engineering, Macau University of Science and Technology, Taipa, Macao, SAR, 999078, P. R. China
- State Key Laboratory of Reliability and Intelligence of Electrical Equipment, School of Materials Science and Engineering, Hebei University of Technology, Tianjin, 300401, P. R. China
| | - Ru Li
- Key Laboratory of Optoelectronic Technology & Systems (Ministry of Education), College of Optoelectronic Engineering, Chongqing University, Chongqing, 400044, P. R. China
| | - Xihan Chen
- SUSTech Energy Institute for Carbon Neutrality, Department of Mechanical and Energy Engineering, Southern University of Science and Technology, Shenzhen, Guangdong, 518055, P. R. China
| | - Cong Chen
- Macao Institute of Materials Science and Engineering (MIMSE), Faculty of Innovation Engineering, Macau University of Science and Technology, Taipa, Macao, SAR, 999078, P. R. China
- State Key Laboratory of Reliability and Intelligence of Electrical Equipment, School of Materials Science and Engineering, Hebei University of Technology, Tianjin, 300401, P. R. China
| | - Chenglin Wang
- State Key Laboratory of Reliability and Intelligence of Electrical Equipment, School of Materials Science and Engineering, Hebei University of Technology, Tianjin, 300401, P. R. China
| | - Boxue Zhang
- Chimie ParisTech, PSL Research University, CNRS, Institut de Recherche de Chimie Paris (IRCP), UMR8247, 11 rue P. et M. Curie, F-75005, Paris, France
| | - Mengjia Li
- State Key Laboratory of Reliability and Intelligence of Electrical Equipment, School of Materials Science and Engineering, Hebei University of Technology, Tianjin, 300401, P. R. China
| | - Xueni Shang
- State Key Laboratory of Reliability and Intelligence of Electrical Equipment, School of Materials Science and Engineering, Hebei University of Technology, Tianjin, 300401, P. R. China
| | - Xuemeng Yu
- SUSTech Energy Institute for Carbon Neutrality, Department of Mechanical and Energy Engineering, Southern University of Science and Technology, Shenzhen, Guangdong, 518055, P. R. China
| | - Shaokuan Gong
- SUSTech Energy Institute for Carbon Neutrality, Department of Mechanical and Energy Engineering, Southern University of Science and Technology, Shenzhen, Guangdong, 518055, P. R. China
| | - Thierry Pauporté
- Chimie ParisTech, PSL Research University, CNRS, Institut de Recherche de Chimie Paris (IRCP), UMR8247, 11 rue P. et M. Curie, F-75005, Paris, France
| | - Hua Yang
- Center for Excellence in Nanoscience (CAS), Key Laboratory of Nanosystem and Hierarchical Fabrication (CAS), National Center for Nanoscience and Technology, Beijing, 100190, P. R. China
| | - Liming Ding
- Institute of High Energy Physics, Chinese Academy of Sciences (CAS), Beijing, 100049, P. R. China
| | - JianXin Tang
- Macao Institute of Materials Science and Engineering (MIMSE), Faculty of Innovation Engineering, Macau University of Science and Technology, Taipa, Macao, SAR, 999078, P. R. China
- Collaborative Innovation Center of Suzhou Nano Science & Technology, Institute of Functional Nano & Soft Materials (FUNSOM), Soochow University, Suzhou, Jiangsu, 215123, P. R. China
| | - Jiangzhao Chen
- Key Laboratory of Optoelectronic Technology & Systems (Ministry of Education), College of Optoelectronic Engineering, Chongqing University, Chongqing, 400044, P. R. China
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Liu D, Zhao J, Kong Y, Ai H, Bai H, Leong CC, Lo KH, Wang S, Ip WF, Lin S, Pan H. Comprehensive Mechanism for CO Electroreduction on Dual-Atom-Catalyst-Anchored N-Doped Graphene. Chemphyschem 2023:e202200937. [PMID: 36849705 DOI: 10.1002/cphc.202200937] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Revised: 01/10/2023] [Accepted: 02/27/2023] [Indexed: 03/01/2023]
Abstract
Carbon neutrality has drawn increasing attention for realizing the carbon cyclization and reducing the greenhouse effect. Although the C1 products, such as CO, can be achieved with a high Faraday efficiency, the targeted production of C2 fuels as well as the mechanism have not been systematically investigated. In this work, we carry out a first-principles study to screen dual-atom catalysts (DACs) for producing C2 fuels through the electrocatalytic carbon monoxide reduction reaction (e-CORR). We find that methanol, ethanol and ethylene can be produced on both DAC-Co and DAC-Cu, while acetate can be achieved on DAC-Cu only. Importantly, methanol and ethylene are preferred on DAC-Co, while acetate and ethylene on DAC-Cu. Furthermore, we show that the explicit solvent can enhance the adsorption and influence the protonation steps, which subsequently affects the protonation and dimerization behavior as well as the performance and selectivity of e-CORR on DACs. We further demonstrate that the C-C coupling is easy to be formed and stabilized if the Integrated Crystal Orbital Hamilton Population (ICOHP) is low because of the low energy barrier. Our findings provide not only guidance on the design of novel catalysts for e-CORR, but an insightful understanding on the reduction mechanism.
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Affiliation(s)
- Di Liu
- Institute of Applied Physics and Materials Engineering, University of Macau, Macao SAR, China
| | - Jia Zhao
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350002, China
| | - Youchao Kong
- Institute of Applied Physics and Materials Engineering, University of Macau, Macao SAR, China
| | - Haoqiang Ai
- Department of Electromechanical Engineering, Faculty of Science and Technology, University of Macau, Macao SAR, China
| | - Haoyun Bai
- Institute of Applied Physics and Materials Engineering, University of Macau, Macao SAR, China
| | - Chon Chio Leong
- Department of Electrical and Computer Engineering, Faculty of Science and Technology, University of Macau, Macao SAR, China
| | - Kin Ho Lo
- Department of Electromechanical Engineering, Faculty of Science and Technology, University of Macau, Macao SAR, China
| | - Shuangpeng Wang
- 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
| | - Weng Fai Ip
- Department of Physics and Chemistry, Faculty of Science and Technology, University of Macau, Macao SAR, China
| | - Sen Lin
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350002, 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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