Morphology and particle growth of Mn-based carbonate precursor in the presence of ethylene glycol for high-capacity Li-rich cathode materials

被引：9
|
作者：
Xiang, Yanhong [1 ,2 ]
Li, Jian [1 ,2 ]
Liao, Qijun [1 ,2 ]
Wu, Xianwen [2 ]
机构：
[1] Jishou Univ, Sch Phys & Mech & Elect Engn, Jishou 416000, Hunan, Peoples R China
[2] Collaborat Innovat Ctr Manganese Zinc Vanadium In, Jishou 416000, Hunan, Peoples R China
来源：
IONICS | 2019年 / 25卷 / 01期
基金：
中国国家自然科学基金;
关键词：
Mn-based carbonate precursor; Cathode material; Li-rich material; Ethylene glycol; Li-ion battery; P-TOLUENESULFONYL ISOCYANATE; ELECTROCHEMICAL PERFORMANCE; COMPOSITE ELECTRODES; INTERFACE; BATTERIES; PRECIPITATION; ETHANOL; NI; CO;
D O I：
10.1007/s11581-018-2569-4
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Mn-based carbonate precursor (Ni0.15Co0.15Mn0.7CO3) is synthesized by the carbonate precipitation in the presence of ethylene glycol. The nucleation and growth of precursor particles are investigated during the precipitation process by monitoring particle morphologies and structures. Primarily irregular-shaped and micron-sized loose agglomerate particles are formed and then the particles grow gradually and continue to aggregate with a round shape. After 3.5h, obvious segregation is observed within the agglomerations. Finally, the particles obtained after aging overnight have a spherical shape and dispersed with a narrow size distribution. The additive of ethylene glycol shows significant effects on the morphology of the prepared Ni0.15Co0.15Mn0.7CO3 and the electrochemical performance of lithiated Li1.2Ni0.12Co0.12Mn0.56O2.
引用
收藏
页码：81 / 87
页数：7
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