A simple one-step molten salt method for synthesis of micron-sized single primary particle LiNi0.8Co0.1Mn0.1O2 cathode material for lithium-ion batteries
| Autor: | Yin-Chun Cao, Zhen-Bo Wang, Su-Rong Hu, Zhi-Yong Wu, Guo-Gang Xiong, Wen-Mao Yang, Rui Liang, Zuo-Qin Tang |
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| Rok vydání: | 2020 |
| Předmět: |
Materials science
General Chemical Engineering General Engineering General Physics and Astronomy chemistry.chemical_element 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Electrochemistry 01 natural sciences Cathode 0104 chemical sciences law.invention Ion Transition metal Chemical engineering chemistry law Particle General Materials Science Lithium Particle size Molten salt 0210 nano-technology |
| Zdroj: | Ionics. 26:1635-1643 |
| ISSN: | 1862-0760 0947-7047 |
| Popis: | A simple one-step molten salt method was used to synthesize micron-sized single primary particle LiNi0.8Co0.1Mn0.1O2 (NCM811) cathode material. XRD, SEM, cycle performance, rate capability, differential capacity curves, 0.1 C charge/discharge curves, and EIS were carried out to research the mechanism regarding the influence of Li/transition metal (Li/TM) ratio, sinter temperature, and sinter time on the morphology and electrochemical properties of micron-sized single primary particle LiNi0.8Co0.1Mn0.1O2 materials. Any one of these three factors increases exceeding certain limit and it will lead to the degradation of active structure evolution during the charge/discharge process, resulting in decreasing electrochemical performance of the cathode material. The micron-sized single primary particle NCM811 cathode material with little aggregation and primary particle size of ~ 1–2 μm was produced successfully under the condition of heating at 850 °C for 16 h with Li/TM = 1.15. This work will be helpful for the synthesis of micron-sized single primary particle NCM cathode materials for lithium-ion batteries. |
| Databáze: | OpenAIRE |
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