期刊
POWDER TECHNOLOGY
卷 363, 期 -, 页码 1-6出版社
ELSEVIER
DOI: 10.1016/j.powtec.2019.12.057
关键词
Cathode material; NCA powders; Glycerol; Flame-assisted spray pyrolysis; Spray drying
资金
- Department of Energy, Office of Energy Efficiency and Renewable Energy (EERE) [DE-EE0007282]
This paper reports the synthesis of LiNi0.8Co0.15Al0.05O2 (NCA) cathode powders using a simple flame assisted spray pyrolysis (FSP) and a spray drying (SD) processes, in which metal salt precursors dissolved in glycerol were used for spraying. X-ray diffraction confirms that the NCA powders have a layered structure, with a low order of cationic mixing. Electron microscopy shows that the particles produced by FSP have a relatively smaller size and a smoother surface than that produced by SD. The NCA powder from the FSP process has an initial discharge capacity of 200.2 mAh/g in voltage range of 3.0-4.3 V at 0.1C. It shows very good capacity retention of 91.5% at 1C and 89.4% at 5C after 200 cycles. These results demonstrate that glycerol can replace water and be used as a solvent in spray processes to make cathode powders, promising a new environmentally-friendly synthesis route for battery powder materials production. (c) 2019 Elsevier B.V. All rights reserved.
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