1
|
Zhang JY, Xia C, Su Y, Zu L, Zhao Z, Li P, Lv Z, Wang J, Mei B, Lan K, Zhao T, Zhang P, Chen W, Zaman S, Liu Y, Peng L, Xia BY, Elzatahry A, Li W, Zhao D. Boosted Oxygen Kinetics of Hierarchically Mesoporous Mo 2C/C for High-current-density Zn-air Battery. Small 2024; 20:e2307378. [PMID: 38009801 DOI: 10.1002/smll.202307378] [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: 08/25/2023] [Revised: 10/25/2023] [Indexed: 11/29/2023]
Abstract
The high-current-density Zn-air battery shows big prospects in next-generation energy technologies, while sluggish O2 reaction and diffusion kinetics barricade the applications. Herein, the sequential assembly is innovatively demonstrated for hierarchically mesoporous molybdenum carbides/carbon microspheres with a tunable thickness of mesoporous carbon layers (Meso-Mo2C/C-x, where x represents the thickness). The optimum Meso-Mo2C/C-14 composites (≈2 µm in diameter) are composed of mesoporous nanosheets (≈38 nm in thickness), which possess bilateral mesoporous carbon layers (≈14 nm in thickness), inner Mo2C/C layers (≈8 nm in thickness) with orthorhombic Mo2C nanoparticles (≈2 nm in diameter), a high surface area of ≈426 m2 g-1, and open mesopores (≈6.9 nm in size). Experiments and calculations corroborate the hierarchically mesoporous Mo2C/C can enhance hydrophilicity for supplying sufficient O2, accelerate oxygen reduction kinetics by highly-active Mo2C and N-doped carbon sites, and facilitate O2 diffusion kinetics over hierarchically mesopores. Therefore, Meso-Mo2C/C-14 outputs a high half-wave potential (0.88 V vs RHE) with a low Tafel slope (51 mV dec-1) for oxygen reduction. More significantly, the Zn-air battery delivers an ultrahigh power density (272 mW cm-2), and an unprecedented 100 h stability at a high-current-density condition (100 mA cm-2), which is one of the best performances.
Collapse
Affiliation(s)
- Jun-Ye Zhang
- Laboratory of Advanced Materials, Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, and State Key Laboratory of Molecular Engineering of Polymers, School of Chemistry and Materials, Fudan University, Shanghai, 200433, P. R. China
| | - Chenfeng Xia
- School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan, 430074, P. R. China
| | - Yaqiong Su
- School of Chemistry, Xi'an Jiaotong University, Xi'an, 710049, P. R. China
| | - Lianhai Zu
- Laboratory of Advanced Materials, Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, and State Key Laboratory of Molecular Engineering of Polymers, School of Chemistry and Materials, Fudan University, Shanghai, 200433, P. R. China
| | - Zaiwang Zhao
- Laboratory of Advanced Materials, Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, and State Key Laboratory of Molecular Engineering of Polymers, School of Chemistry and Materials, Fudan University, Shanghai, 200433, P. R. China
| | - Peng Li
- School of Chemistry, Xi'an Jiaotong University, Xi'an, 710049, P. R. China
| | - Zirui Lv
- Laboratory of Advanced Materials, Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, and State Key Laboratory of Molecular Engineering of Polymers, School of Chemistry and Materials, Fudan University, Shanghai, 200433, P. R. China
| | - Jiazheng Wang
- College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, P. R. China
| | - Bingbao Mei
- Shanghai Institute of Applied Physics, Shanghai Synchrotron Radiation Facility, Chinese Academy of Sciences, Shanghai, 201204, P. R. China
| | - Kun Lan
- Laboratory of Advanced Materials, Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, and State Key Laboratory of Molecular Engineering of Polymers, School of Chemistry and Materials, Fudan University, Shanghai, 200433, P. R. China
| | - Tiancong Zhao
- Laboratory of Advanced Materials, Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, and State Key Laboratory of Molecular Engineering of Polymers, School of Chemistry and Materials, Fudan University, Shanghai, 200433, P. R. China
| | - Pengfei Zhang
- Laboratory of Advanced Materials, Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, and State Key Laboratory of Molecular Engineering of Polymers, School of Chemistry and Materials, Fudan University, Shanghai, 200433, P. R. China
| | - Weinan Chen
- Laboratory of Advanced Materials, Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, and State Key Laboratory of Molecular Engineering of Polymers, School of Chemistry and Materials, Fudan University, Shanghai, 200433, P. R. China
| | - Shahid Zaman
- School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan, 430074, P. R. China
| | - Yi Liu
- Laboratory of Advanced Materials, Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, and State Key Laboratory of Molecular Engineering of Polymers, School of Chemistry and Materials, Fudan University, Shanghai, 200433, P. R. China
| | - Liang Peng
- Laboratory of Advanced Materials, Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, and State Key Laboratory of Molecular Engineering of Polymers, School of Chemistry and Materials, Fudan University, Shanghai, 200433, P. R. China
| | - Bao Yu Xia
- School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan, 430074, P. R. China
| | - Ahmed Elzatahry
- Department of Physics and Materials Science, College of Arts and Sciences, Qatar University, PO Box 2713, Doha, 2713, Qatar
| | - Wei Li
- Laboratory of Advanced Materials, Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, and State Key Laboratory of Molecular Engineering of Polymers, School of Chemistry and Materials, Fudan University, Shanghai, 200433, P. R. China
| | - Dongyuan Zhao
- Laboratory of Advanced Materials, Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, and State Key Laboratory of Molecular Engineering of Polymers, School of Chemistry and Materials, Fudan University, Shanghai, 200433, P. R. China
| |
Collapse
|