Hydrothermal synthesis of spherical Li4Ti5O12 material for a novel durable Li4Ti5O12/LiMn2O4 full lithium ion battery |
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| Affiliation: | 1. School of Chemistry and Chemical Engineering, Inner Mongolia University of Science and Technology, Baotou 014010, Inner Mongolia, PR China;2. Department of Applied Chemistry, College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, PR China;1. School of Materials Science and Engineering, Shaanxi University of Science and Technology, Xi''an 710021, Shaanxi, PR China;2. Shaanxi Collaborative Innovation Center of Industrial Auxiliary Chemistry and Technology, Shaanxi University of Science and Technology, Xi''an 710021, PR China;3. Shaanxi Key Laboratory of Comprehensive Utilization of Tailings Resources, College of Chemical Engineering and Modern Materials, Shang Luo University, Shang Luo 726000, Shaanxi, PR China;4. Department of Electronic Engineering, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, PR China;1. College of Chemistry and Molecular Science, Wuhan University, Wuhan 430072, P. R. China;2. Department of Chemical Engineering and Food Science, Hubei University of Arts and Science, Xiangyang 441053, P. R. China;1. Department of Materials Science and Engineering, Seoul National University of Science and Technology, Seoul 01811, South Korea;2. Program of Materials Science & Engineering, Convergence Institute of Biomedical Engineering and Biomaterials, Seoul National University of Science and Technology, Seoul 01811, South Korea;1. Department of Advanced Energy Materials, College of Materials Science and Engineering, Sichuan University, Chengdu 610064, PR China;2. Engineering Research Center of Alternative Energy Materials & Devices, Ministry of Education, Sichuan University, Chengdu 610064, PR China;3. College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, PR China |
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| Abstract: | Pure spherical Li4Ti5O12 spinel material is quickly synthesized via an efficient hydrothermal procedure. The obtained Li4Ti5O12 particle size is about 0.5 µm. The Li4Ti5O12 has an initial discharge capacity of 162.2 mA h g−1 and capacity retention of 97.5% after 100 cycles at a rate of 0.2 C. Then, a 2.5 V and long-lasting Li-ion cell with a LiMn2O4 cathode and a Li4Ti5O12 anode is developed. Electrochemical measurements of the cell indicate that the Li4Ti5O12/LiMn2O4 full cell, with a weight ratio of 1.5 between cathode and anode, exhibits excellent electrochemical performance, delivering a reversible capacity of 130 mA h g−1 at room temperature. The full cell also exhibits outstanding electrochemical performances at high temperature, as it has an initial discharge capacity of 109.6 mA h g−1, along with a capacity retention rate of 88.9% after 100 cycles at 55 °C. |
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| Keywords: | Lithium ion battery Spherical lithium titanate Spinel lithium manganate Full cell Electrochemical property |
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