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Jing C, Huang L, Tao S, Chen Y, Zhang S, Dong W, Ling F, Tang X, Li Y, Feng L, Zhang Y. Construction of MoB@LDH heterojunction and its derivates through phase and interface engineering for advanced supercapacitor applications. J Colloid Interface Sci 2024; 660:10-20. [PMID: 38241858 DOI: 10.1016/j.jcis.2023.12.184] [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: 12/05/2023] [Revised: 12/24/2023] [Accepted: 12/30/2023] [Indexed: 01/21/2024]
Abstract
Layered double hydroxide (LDH) has been attracted widespread attention in supercapacitor due to their unique layered structure and associated advantages. However, the inherent limitations of low electrical conductivity and reaction kinetics rate of LDH restrict its widespread application. Various modification techniques, such as heterojunction formation, phosphorization and introduction of phosphorus vacancies, are employed to modify LDH with the goal of improving the electrochemical performance. Preparation of composite materials using MoB MBene as conductive template and phosphorization are the effective ways for enhancing the electrical conductivity of electrode materials. MoB MBene is prepared using a modified method that combines NaOH etching and a high-temperature hydrothermal process. The presence of phosphorus vacancy is beneficial for enhancing the kinetics rate during electrode reactions. Through the synergistic effect of various modification methods, MP2 demonstrates an optimal electrochemical performance with a superior specific capacitance of 1731.19F/g (238.28 mAh g-1) at 1 A/g. It also demonstrates an impressive rate capacity of 81.28 % at 10 A/g and maintains a satisfactory capacitance retention of 88.14 % after 5000 cycles. In addition, a fabricated MP2//AC ASC device achieves an impressive energy density of 39.91 Wh kg-1 at the power density of 948.25 W kg-1 and demonstrates satisfactory cycling stability of 78.76 % after 5000 cycles. This work presents a comprehensive framework for analyzing the impact of material structure, components, and crystal phases on energy storage performance. It also examines the regulatory impact of different modification methods on energy storage mechanisms.
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Affiliation(s)
- Chuan Jing
- College of Science, Chongqing University of Posts and Telecommunications, Chongqing 400065, PR China; Water Environment Engineering Technology Innovation Center, Chongqing Academy of Eco-Environmental Sciences, Chongqing 401120, PR China.
| | - Leyi Huang
- College of Science, Chongqing University of Posts and Telecommunications, Chongqing 400065, PR China
| | - Shengrong Tao
- College of Science, Chongqing University of Posts and Telecommunications, Chongqing 400065, PR China
| | - Yancheng Chen
- College of Science, Chongqing University of Posts and Telecommunications, Chongqing 400065, PR China
| | - Shuijie Zhang
- College of Science, Chongqing University of Posts and Telecommunications, Chongqing 400065, PR China
| | - Wei Dong
- College of Science, Chongqing University of Posts and Telecommunications, Chongqing 400065, PR China
| | - Faling Ling
- College of Science, Chongqing University of Posts and Telecommunications, Chongqing 400065, PR China.
| | - Xiao Tang
- College of Science, Chongqing University of Posts and Telecommunications, Chongqing 400065, PR China
| | - Yanhong Li
- College of Science, Chongqing University of Posts and Telecommunications, Chongqing 400065, PR China
| | - Li Feng
- Water Environment Engineering Technology Innovation Center, Chongqing Academy of Eco-Environmental Sciences, Chongqing 401120, PR China.
| | - Yuxin Zhang
- College of Materials Science and Engineering, Chongqing University, Chongqing 400044, PR China
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