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Wang Q, Li Y, Si W, Tan W, Cheng G, Yu L, Ran W, Chen J, Zhao YM, Wu C, Liu W, Shen L, Wang Q. Suppressing gas swelling in self-assembled Li 4Ti 5O 12 (400) for high-performance rechargeable batteries. J Colloid Interface Sci 2023; 651:785-793. [PMID: 37572614 DOI: 10.1016/j.jcis.2023.08.021] [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: 05/28/2023] [Revised: 07/23/2023] [Accepted: 08/05/2023] [Indexed: 08/14/2023]
Abstract
Lithium titanate is a promising anode material for lithium-ion batteries due to its high-rate capability and long-cycle duration. However, gas swelling during electrochemical reactions has hindered its industrial application. Here, we synthesize self-assembled (400)-orientation lithium titanate (SA-LTONF) with ultrafine nanoparticles using a feasible thermal method. The SA-LTONF with an organic carbon coating exhibited superior electrochemical performance. To understand such high-rate capability, we perform density functional theory (DFT) calculations which elucidate the orientation-dependent electrochemical mechanism of hydrogen evolution and the atomically dynamic mechanism of lithium-ion migration in Li4Ti5O12 and Li7Ti5O12. Our findings provide a unique insight into the gas generation and ultrafast lithium-ion transportation in lithium titanate and offer guidance for nanoarchitecture construction and materials design of lithium titanate for commercial applications.
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Affiliation(s)
- Qiwei Wang
- School of Materials and Energy, Southwest University, Chongqing 400715, PR China
| | - Yang Li
- School of Materials and Energy, Southwest University, Chongqing 400715, PR China
| | - Weichan Si
- School of Materials and Energy, Southwest University, Chongqing 400715, PR China
| | - Wenyu Tan
- School of Materials and Energy, Southwest University, Chongqing 400715, PR China
| | - Gao Cheng
- Key Laboratory of Clean Chemistry Technology of Guangdong Regular Higher Education Institutions, School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, PR China
| | - Lin Yu
- Key Laboratory of Clean Chemistry Technology of Guangdong Regular Higher Education Institutions, School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, PR China
| | - Wei Ran
- School of Materials and Energy, Southwest University, Chongqing 400715, PR China
| | - Jianfang Chen
- School of Materials and Energy, Southwest University, Chongqing 400715, PR China
| | - Yi-Ming Zhao
- Department of Mechanical Engineering, National University of Singapore, Singapore 117575, Singapore
| | - Chaoling Wu
- Institute of New-Energy and Low-Carbon Technology, Engineering Research Center of Alternative Energy Materials & Devices, Ministry of Education, Sichuan University, Chengdu 610065, PR China
| | - Wei Liu
- Institute of New-Energy and Low-Carbon Technology, Engineering Research Center of Alternative Energy Materials & Devices, Ministry of Education, Sichuan University, Chengdu 610065, PR China
| | - Lei Shen
- Department of Mechanical Engineering, National University of Singapore, Singapore 117575, Singapore.
| | - Qiang Wang
- School of Materials and Energy, Southwest University, Chongqing 400715, PR China.
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