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Pan W, Zhang Y, Leong KW, Zhang Y, Mao J, Wang Y, Zhao X, Luo S, Leung DYC. Unlocking the Potential of 2D MoS 2 Cathodes for High-Performance Aqueous Al-Ion Batteries: Deciphering the Intercalation Mechanisms. Small Methods 2023:e2301206. [PMID: 38059756 DOI: 10.1002/smtd.202301206] [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] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Revised: 11/08/2023] [Indexed: 12/08/2023]
Abstract
In recent years, there have been significant advancements in Al-ion battery development, resulting in high voltage and capacity. Traditionally, only carbon-based materials with layered structures and strong bonding capabilities can deliver superior performance. However, most other materials exhibited low discharge voltages of 1.4 V, especially in aqueous Al-ion battery systems lacking anion intercalation. Thus, the development of high-voltage cathode materials has become crucial. This study introduces 2D MoS2 as a high-performance cathode for aqueous Al-ion batteries. The material's interlayer structure enables the intercalation of AlCl4 - anions, resulting in high-voltage intercalation. The resulting battery achieved a high voltage of 1.8 V with a capacity of 750 mAh g-1 , contributing to a high energy density of 890 Wh kg-1 and an impressive retention rate of ≈100% after 200 cycles. This research not only sheds light on the high-voltage anion-intercalation mechanism of MoS2 but also paves the way for the further development of advanced cathode materials in the field of Al-ion batteries. By demonstrating the potential of using 2D MoS2 as a cathode material, this finding can lead to the development of more efficient and innovative energy storage technologies, ultimately contributing to a sustainable and green energy future.
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Affiliation(s)
- Wending Pan
- Department of Mechanical Engineering, the University of Hong Kong, Hong Kong, 999077, China
| | - Yulong Zhang
- College of Mechatronics and Electrical Engineering, Hebei Agricultural University, Baoding, 071001, China
| | - Kee Wah Leong
- Department of Mechanical Engineering, the University of Hong Kong, Hong Kong, 999077, China
| | - Yingguang Zhang
- Department of Mechanical Engineering, the University of Hong Kong, Hong Kong, 999077, China
| | - Jianjun Mao
- Department of Chemistry, the University of Hong Kong, Hong Kong, 999077, China
| | - Yifei Wang
- School of Mechanical Engineering and Automation, Harbin Institute of Technology, Shenzhen, 510006, China
| | - Xiaolong Zhao
- Department of Mechanical Engineering, the University of Hong Kong, Hong Kong, 999077, China
| | - Shijing Luo
- Department of Mechanical Engineering, the University of Hong Kong, Hong Kong, 999077, China
| | - D Y C Leung
- Department of Mechanical Engineering, the University of Hong Kong, Hong Kong, 999077, China
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