Preparation and performance of Li-rich cathode material by carbon-containing droplet combustion

doi:10.19799/j.cnki.2095-4239.2024.1014

Abstract

Abstract:

To meet the market demand for high-capacity lithium-ion battery cathode materials, C/Li_1.2Ni_0.13Co_0.13Mn_0.54O₂ composite precursors were prepared using carbon-containing droplet combustion. Lithium-rich manganese-based cathode materials were then obtained through calcination and carbon removal. The electrochemical performance of these materials was compared with that of samples prepared using the solution combustion method. X-ray diffraction (XRD) and scanning electron microscopy (SEM) were employed to analyze the microstructure and crystal morphology of the prepared samples. Electrochemical properties were evaluated using a battery testing system and an electrochemical workstation. The results indicate that Li_1.2Ni_0.13Co_0.13Mn_0.54O₂ prepared via carbon-containing droplet combustion exhibited an initial discharge specific capacity of 390.89 mAh/g at a 0.1C rate and 185.06 mAh/g at a 5C current density. After 100 cycles at a 1C rate, the discharge capacity remained at 108.78 mAh/g, demonstrating good capacity retention and rate performance. However, its cycling stability was slightly lower than that of samples obtained via the solution combustion method.

Key words: carbon-containing droplet combustion, lithium-ion battery, Li-rich Mn-base cathode, electrochemical

CLC Number:

TM 911

Zhiming CHEN, Aimin CHU, Ziyu ZHOU, Yuping Zhao, Youming CHEN. Preparation and performance of Li-rich cathode material by carbon-containing droplet combustion[J]. Energy Storage Science and Technology, 2025, 14(4): 1362-1368.

Figures/Tables 8

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Samples	0.1C	0.3C	0.5C	1C	2C	5C	10C	0.1C
LMCN-solution	326.66	256.07	219.30	194.59	176.41	136.97	105.74	301.84
LMCN-droplet	390.89	370.04	283.21	258.81	230.39	185.06	57.03	464.10
difference value	64.23	113.97	63.91	64.22	53.98	48.09	-48.70	162.26

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