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Bai X, Lu S, Song P, Jia Z, Gao Z, Peng T, Wang Z, Jiang Q, Cui H, Tian W, Feng R, Liang Z, Kang Q, Yuan H. Heterojunction of MXenes and MN 4-graphene: Machine learning to accelerate the design of bifunctional oxygen electrocatalysts. J Colloid Interface Sci 2024; 664:716-725. [PMID: 38492372 DOI: 10.1016/j.jcis.2024.03.073] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Revised: 02/18/2024] [Accepted: 03/10/2024] [Indexed: 03/18/2024]
Abstract
Oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) are essential for the development of excellent bifunctional electrocatalysts, which are key functions in clean energy production. The emphasis of this study lies in the rapid design and investigation of 153 MN4-graphene (Gra)/ MXene (M2NO) electrocatalysts for ORR/OER catalytic activity using machine learning (ML) and density functional theory (DFT). The DFT results indicated that CoN4-Gra/Ti2NO had both good ORR (0.37 V) and OER (0.30 V) overpotentials, while TiN4-Gra/M2NO and MN4-Gra/Cr2NO had high overpotentials. Our research further indicated orbital spin polarization and d-band centers far from the Fermi energy level, affecting the adsorption energy of oxygen-containing intermediates and thus reducing the catalytic activity. The ML results showed that the gradient boosting regression (GBR) model successfully predicted the overpotentials of the monofunctional catalysts RhN4-Gra/Ti2NO (ORR, 0.39 V) and RuN4-Gra/W2NO (OER, 0.45 V) as well as the overpotentials of the bifunctional catalyst RuN4-Gra/W2NO (ORR, 0.39 V; OER, 0.45 V). The symbolic regression (SR) algorithm was used to construct the overpotential descriptors without environmental variable features to accelerate the catalyst screening and shorten the trial-and-error costs from the source, providing a reliable theoretical basis for the experimental synthesis of MXene heterostructures.
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Affiliation(s)
- Xue Bai
- School of Mechanical Engineering, Shaanxi University of Technology, Hanzhong, Shaanxi 723001, China; Shaanxi Key Laboratory of Industrial Automation, Shaanxi University of Technology, Hanzhong, Shaanxi 723001, China
| | - Sen Lu
- School of Mechanical Engineering, Shaanxi University of Technology, Hanzhong, Shaanxi 723001, China; Shaanxi Key Laboratory of Industrial Automation, Shaanxi University of Technology, Hanzhong, Shaanxi 723001, China
| | - Pei Song
- School of Mechanical Engineering, Shaanxi University of Technology, Hanzhong, Shaanxi 723001, China; Shaanxi Key Laboratory of Industrial Automation, Shaanxi University of Technology, Hanzhong, Shaanxi 723001, China
| | - Zepeng Jia
- School of Mechanical Engineering, Shaanxi University of Technology, Hanzhong, Shaanxi 723001, China; Shaanxi Key Laboratory of Industrial Automation, Shaanxi University of Technology, Hanzhong, Shaanxi 723001, China
| | - Zhikai Gao
- School of Mechanical Engineering, Shaanxi University of Technology, Hanzhong, Shaanxi 723001, China; Shaanxi Key Laboratory of Industrial Automation, Shaanxi University of Technology, Hanzhong, Shaanxi 723001, China
| | - Tiren Peng
- School of Mechanical Engineering, Shaanxi University of Technology, Hanzhong, Shaanxi 723001, China; Shaanxi Key Laboratory of Industrial Automation, Shaanxi University of Technology, Hanzhong, Shaanxi 723001, China
| | - Zhiguo Wang
- School of Mechanical Engineering, Shaanxi University of Technology, Hanzhong, Shaanxi 723001, China; Shaanxi Key Laboratory of Industrial Automation, Shaanxi University of Technology, Hanzhong, Shaanxi 723001, China
| | - Qi Jiang
- School of Mechanical Engineering, Shaanxi University of Technology, Hanzhong, Shaanxi 723001, China; Shaanxi Key Laboratory of Industrial Automation, Shaanxi University of Technology, Hanzhong, Shaanxi 723001, China
| | - Hong Cui
- School of Mechanical Engineering, Shaanxi University of Technology, Hanzhong, Shaanxi 723001, China; Shaanxi Key Laboratory of Industrial Automation, Shaanxi University of Technology, Hanzhong, Shaanxi 723001, China.
| | - Weizhi Tian
- College of Mechanical & Electrical Engineering, Shaanxi University of Science & Technology, Xi'an, Shaanxi 710021, China.
| | - Rong Feng
- School of Mechanical Engineering, Shaanxi University of Technology, Hanzhong, Shaanxi 723001, China; Shaanxi Key Laboratory of Industrial Automation, Shaanxi University of Technology, Hanzhong, Shaanxi 723001, China
| | - Zhiyong Liang
- School of Mechanical Engineering, Shaanxi University of Technology, Hanzhong, Shaanxi 723001, China; Shaanxi Key Laboratory of Industrial Automation, Shaanxi University of Technology, Hanzhong, Shaanxi 723001, China
| | - Qin Kang
- School of Mechanical Engineering, Shaanxi University of Technology, Hanzhong, Shaanxi 723001, China; Shaanxi Key Laboratory of Industrial Automation, Shaanxi University of Technology, Hanzhong, Shaanxi 723001, China
| | - Hongkuan Yuan
- School of Physical Science and Technology, Southwest University, Chongqing 400715, China
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