| INORGANIC MATERIALS AND CERAMIC MATRIX COMPOSITES |
|
|
|
|
|
| Structural Modification and Electrochemical Performance of Al-doped LiNi0.5Co0.2Mn0.3O2 Materials |
| XING Jianxiang1,2, YANG Yanpu2, YANG Jishun2, XU Yue2, YANG Tinghai1,*, YANG Gang2,*
|
1 Jiangsu Laboratory of Precious Metals Processing Technology and Application, School of Chemistry and Chemical Engineering, Jiangsu University of Techno-logy, Changzhou 213000, Jiangsu, China
2 Jiangsu Key Laboratory of Advanced Functional Materials, School of Materials Engineering, Changshu Institute of Technology, Changshu 215500, Jiangsu, China |
|
|
|
|
Abstract The ternary cathode material LiNi0.5Co0.2Mn0.3O2 (NCM523) has attracted much attention due to its moderate price and high energy density. Nevertheless, the low cyclic stability of NCM523 has hindered its commercial application. In this work, a series of modified NCM523 cathode materials in which various amounts of Al atoms substituted for Mn atoms were prepared by a hybridized method combining co-precipitation and high-temperature sintering. The results showed that the appropriate dosage of Al could enhance the stability of the transition metal layer and significantly improve the poor cyclic stability of NCM523 material. The best electrochemical performance was obtained when an Al dosage of 7% molar ratio (Al to Li) was adopted, as it provided a discharge specific capacity of 165.7 mAh·g-1 within the voltage range of 2.7—4.5 V at 0.1C current density, which deteriorated to 134.3 mAh·g-1 after 50 cycles, with 81.05% capacity retention. At the high-temperature (55 ℃) condition, the sample with 7% Al/Li molar ratio still maintained the best electrochemical performance.
|
|
Published: 10 January 2025
Online: 2025-01-10
|
|
|
|
|
1 Ko G, Jeong S, Park S, et al. Energy Storage Materials, 2023, 60, 102840.
2 Meng J K, Qu G, Huang Y H. eTransportation, 2023, 16, 100233.
3 Xie K, Zheng C M, Li Y J, et al. Journal of Inorganic Materials, 2021, 36(2), 175.
4 de Biasi L, Schwarz B, Brezesinski T, et al. Advanced Materials, 2019, 31(26), 1900985.
5 Chen Y H, Tian X L. Journal of Materials and Metallurgy, 2023, 22(6), 566 (in Chinese).
陈彦恒, 田小龙. 材料与冶金学报, 2023, 22(6), 566.
6 Luo C G, Zhu L J, Liu B Z, et al. Journal of Inorganic Materials, 2022, 37(9), 1023.
7 Yao W L, Zhang H J, Zhong S W, et al. Journal of Inorganic Materials, 2021, 36(7), 718.
8 Yan J Q, Huang H, Tong J F, et al. Interdisciplinary Materials, 2022, 1(3), 330.
9 Wang L Z, Qin J, Bai Z M, et al. Small Structures, 2022, 3(7), 2100233.
10 Xi X S, Fan YY, Liu Y C, Chen Z, et al. Journal of Alloys and Compounds, 2021, 872, 159664.
11 Sallard S, Billaud J, Sheptyakov D, et al. ACS Applied Energy Materials, 2020, 3(9), 8646.
12 Chen X, Yang C L, Huang J L, et al. Materials Reports, 2023, 37(13), 21070223 (in Chinese).
陈喜, 杨春利, 黄江龙, 等. 材料导报, 2023, 37(13), 21070223.
13 Hou Y Z, Ren Y B, Shi T S, et al. Journal of Alloys and Compounds, 2023, 939, 168778.
14 Dang R X, Qu Y D, Ma Z K, et al. The Journal of Physical Chemistry C, 2021, 126(1), 151.
15 Kebede M A. Current Opinion in Electrochemistry, 2023, 39, 101261.
16 Wang G, Fearn T, Wang T Y, et al. ACS Central Science, 2021, 7(9), 1551.
17 Wang J L, Liu C J, Wang Q, et al. Journal of Colloid and Interface Science, 2022, 628, 338.
18 Zhang B, Cheng L, Deng P, et al. Journal of Alloys and Compounds, 2021, 872, 159619.
19 Ko G, Park S, Kim W, et al. Journal of Alloys and Compounds, 2022, 925, 166678.
20 Liu W, Li X F, Xiong D B, et al. Nano Energy, 2018, 44, 111.
21 Yu W H, Zhao L Y, Wang Y Y, et al. Journal of Alloys and Compounds, 2023, 947, 169481.
22 Li J, Zhong W T, Deng Q, et al. Advanced Functional Materials, 2023, 33(24), 2300127.
23 Michael Y, Wangda L, Manthiram A. Chemistry of Materials, 2022, 34(2), 629.
24 Jeong M, Kim H, Lee W, et al. Journal of Power Sources, 2020, 474, 228592.
25 Gao D C, Huang Y W, Dong H L, et al. Small, 2023, 19(5), 2205122.
26 Lv Y T, Cheng X, Qiang W J, et al. Journal of Power Sources, 2020, 450, 227718.
27 Zhang C F, Wan J J, Li Y X, et al. Journal of Materials Chemistry A, 2020, 8(14), 6893. |
|
|
|
渝公网安备50019002502923号 © Editorial Office of Materials Reports.
2025, Vol. 39 
