含碳雾滴燃烧制备微纳空心球型富锂锰基正极材料及性能研究

doi:10.19799/j.cnki.2095-4239.2024.1014

储能科学与技术 ›› 2025, Vol. 14 ›› Issue (4): 1362-1368.doi: 10.19799/j.cnki.2095-4239.2024.1014

含碳雾滴燃烧制备微纳空心球型富锂锰基正极材料及性能研究

陈志铭¹(), 储爱民¹(), 周子榆¹, 赵玉萍², 陈友明¹

^1.湖南科技大学材料科学与工程学院
^2.湖南科技大学土木工程学院，湖南湘潭 411201

收稿日期:2024-10-31 修回日期:2024-11-24 出版日期:2025-04-28 发布日期:2025-05-20
通讯作者: 储爱民 E-mail:2368445516@qq.com;chuaiminme@163.com
作者简介:陈志铭（1999—），男，硕士研究生，研究方向为锂离子电池富锂锰基正极材料制备与性能，E-mail：2368445516@qq.com；
基金资助:
国家自然科学基金(52174344);湖南省自然科学基金(2024JJ7178)

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

Zhiming CHEN¹(), Aimin CHU¹(), Ziyu ZHOU¹, Yuping Zhao², Youming CHEN¹

^1.School of Materials Science and Engineering, Hunan University of Science and Technology
^2.School of Civil and Engineering, Hunan University of Science and Technology, Xiangtan 411201, Hunan, China

Received:2024-10-31 Revised:2024-11-24 Online:2025-04-28 Published:2025-05-20
Contact: Aimin CHU E-mail:2368445516@qq.com;chuaiminme@163.com

摘要/Abstract

摘要：

为了满足市场对高容量锂离子电池正极材料的需求，运用含碳雾滴燃烧法制备C/Li_1.2Ni_0.13Co_0.13Mn_0.54O₂复合前驱体，通过煅烧除碳获得富锂锰基正极材料，并对比溶液燃烧法制备的样品。利用X射线衍射仪、扫描电子显微镜观测制备样品的微观形貌和晶体结构差异，使用电池测试系统和电化学工作站，对两种方法制备正极材料的电化学性能进行对比分析。结果表明，含碳雾滴燃烧制备的Li_1.2Ni_0.13Co_0.13Mn_0.54O₂在0.1C倍率下首周放电比容量达到了390.89 mAh/g，在5C电流密度下，仍有185.06 mAh/g；1C倍率下循环充放电100周放电容量保持在108.78 mAh/g，展示了较好的容量与倍率性能，但其循环性能略低于溶液燃烧法制备的样品。

关键词: 含碳雾滴燃烧, 富锂锰基, 正极材料, 电化学

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

中图分类号:

TM 911

陈志铭, 储爱民, 周子榆, 赵玉萍, 陈友明. 含碳雾滴燃烧制备微纳空心球型富锂锰基正极材料及性能研究[J]. 储能科学与技术, 2025, 14(4): 1362-1368.

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.

图/表 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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含碳雾滴燃烧制备微纳空心球型富锂锰基正极材料及性能研究

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

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