中國有色金屬學報(英文版)
Transactions of Nonferrous Metals Society of China
| Vol. 33 No. 9 September 2023 |
（1. School of Materials Science and Engineering, Northeastern University, Shenyang 110819, China;
2. Hebei Key Laboratory of Dielectric and Electrolyte Functional Material, School of Resources and Materials, Northeastern University at Qinhuangdao, Qinhuangdao 066004, China;
3. State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang 110819, China;
4. School of Materials Science and Engineering, Shenyang University of Technology, Shenyang 110870, China）
Abstract:To explore the effect of the preparation conditions on the electrochemical properties of transition metal oxide anode materials, ZnMn2O4 anode material was hydrothermally synthesized using zinc nitrate and manganese nitrate as raw materials. The effects of reaction temperature, reaction time, compactness, and pH on the synthesis conditions were systematically studied through an orthogonal test designed with four factors and three levels. X-ray diffraction and scanning electron microscopy proved the formation of a micron-scale block-like ZnMn2O4 structure with the I41/amd space group. The Li/ZnMn2O4 cells delivered an initial discharge specific capacity of 933.1 mA·h/g, and the discharge specific capacity remained at 249.3 mA·h/g after 100 cycles at a current rate of 0.1C for the as-synthesized ZnMn2O4 under the optimized conditions. The optimized sample with orthogonal test exhibits outstanding cycle stability and rate performance.
Key words: spinel ZnMn2O4 structure; lithium-ion battery; electrochemical performance; hydrothermal reaction; orthogonal test
