Ton-scale preparation of single-crystal Ni-rich ternary cathode materials for high-performance lithium ion batteries

IF 1.2 4区材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

Functional Materials Letters Pub Date : 2023-11-04 DOI:10.1142/s1793604723400350

Yongfu Cui, Jianzong Man, Leichao Meng, Wenjun Wang, Xueping Fan, Jing Yuan, Jianhong Peng

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引用次数: 0

Abstract

Single-crystal nickel (Ni)-rich cathode materials (Li[Ni[Formula: see text]Co[Formula: see text]Mn[Formula: see text]]O 2 , (NCMs)) of lithium ion batteries (LIBs) have displayed promising application potential due to the merits of stable structure, minor side reaction, and high energy density. The Ni[Formula: see text]Co[Formula: see text]Mn[Formula: see text](OH) 2 as the precursor of single-crystal NCM faces the issues of tedious preparation process and serious pollutant emission for traditional preparation methods during the industrial preparation. Herein, an improved continuous two-step spray pyrolysis strategy is adopted to prepare the precursor of single-crystal NCM. Combining with the industrial devices, ton-scale preparation of single-crystal NCM is realized after dynamic lithiation post-treatment. This improved strategy not only shortens the preparation process, but also reduces metal segregation and sintering temperature, effectively balancing the cost control and production efficiency. The samples sintering at 850[Formula: see text]C show uniform morphology with a diameter of 4.5 [Formula: see text] m and delivers an initial discharge capacity of 169 mAh/g at 0.1 C after 100 cycles. This work provides a new route for the industrial preparation single-crystal NCM cathode materials of LIBs.

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高性能锂离子电池用富镍单晶三元正极材料的吨级制备

锂离子电池(LIBs)单晶富镍(Ni)正极材料(Li[Ni][公式:见文]Co[公式:见文]Mn[公式:见文]]o2， (ncm))由于具有结构稳定、副反应小、能量密度高等优点，具有广阔的应用前景。Ni[公式:见文]Co[公式:见文]Mn[公式:见文](OH) 2作为单晶NCM的前驱体，在工业制备过程中面临传统制备方法制备过程繁琐、污染物排放严重的问题。本文采用改进的连续两步喷雾热解策略制备单晶NCM前驱体。结合工业装置，通过动态锂化后处理，实现了单晶NCM的吨级制备。这种改进策略不仅缩短了制备过程，而且降低了金属偏析和烧结温度，有效地平衡了成本控制和生产效率。在850℃[公式:见文本]下烧结的样品形貌均匀，直径为4.5 m[公式:见文本]，在0.1℃下循环100次后，初始放电容量为169 mAh/g。本研究为工业制备锂离子电池单晶NCM正极材料提供了一条新的途径。

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来源期刊

Functional Materials Letters 工程技术-材料科学：综合

CiteScore

2.40

自引率

7.70%

发文量

审稿时长

1.9 months

期刊介绍： Functional Materials Letters is an international peer-reviewed scientific journal for original contributions to research on the synthesis, behavior and characterization of functional materials. The journal seeks to provide a rapid forum for the communication of novel research of high quality and with an interdisciplinary flavor. The journal is an ideal forum for communication amongst materials scientists and engineers, chemists and chemical engineers, and physicists in the dynamic fields associated with functional materials. Functional materials are designed to make use of their natural or engineered functionalities to respond to changes in electrical and magnetic fields, physical and chemical environment, etc. These design considerations are fundamentally different to those relevant for structural materials and are the focus of this journal. Functional materials play an increasingly important role in the development of the field of materials science and engineering. The scope of the journal covers theoretical and experimental studies of functional materials, characterization and new applications-related research on functional materials in macro-, micro- and nano-scale science and engineering. Among the topics covered are ferroelectric, multiferroic, ferromagnetic, magneto-optical, optoelectric, thermoelectric, energy conversion and energy storage, sustainable energy and shape memory materials.