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首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >Optimization of synthesis parameters for uniform sphere-like Li1.2Mn0.54Ni0.13Co0.13O2 as high performance cathode material for lithium ion batteries
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Optimization of synthesis parameters for uniform sphere-like Li1.2Mn0.54Ni0.13Co0.13O2 as high performance cathode material for lithium ion batteries

机译：均匀球样Li1.2Mn0.54Ni0.13Co0.13O2作为锂离子电池高性能阴极材料的合成参数优化

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摘要

Lithium-rich layered oxide materials of Li1.2Mn0.54Ni0.13Co0.13O2 have been successfully synthesized through a facile one-step coprecipitation method without the use of any toxic chelating agent. The structure and morphology of the as-prepared Li1.2Mn0.54Ni0.13Co0.13O2 cathode material were well optimized by tuning synthesis parameters including the co-precipitation pH value, the feeding rate of metal precursors and the reaction temperature. The optimal Li1.2Mn0.54Ni0.13Co0.13O2 spherical particles present well-ordered layer structure and low cation-mixing degree. As a result, Li1.2Mn0.54Ni0.13Co0.13O2 as a cathode material presents excellent reversible capacity, rate capability, and cycling performance, which delivers a high initial discharge capacity of 255 mAh g(-1) and 172 mAh g(-1) at 0.1 C and 1 C, respectively. Moreover, a discharge capacity of 155 mAh g(-1) can be maintained even after 300 cycles at 1 C, corresponding to a capacity retention as high as 81%. (C) 2018 Published by Elsevier B.V.
机译：富含锂的层状氧化物材料Li1.2Mn0.54Ni0.13CO0.13O2通过容易的一步共沉淀方法成功地合成，而不使用任何有毒的螯合剂。通过调节包括共沉淀pH值的合成参数，金属前体的进料速率和反应温度，通过调节合成参数进行充分优化的制备的Li1.2Mn0.54Ni0.13CO0.13O2阴极材料的结构和形态。最佳Li1.2Mn0.54Ni0.13Co0.13O2球形颗粒呈现良好有序的层结构和低阳离子混合度。结果，作为阴极材料的Li1.2Mn0.54Ni0.13Co0.13O2呈现出优异的可逆容量，速率能力和循环性能，可提供255mAhg（-1）和172mAhg（ - ）的高初始放电容量（ - ） 1）分别在0.1c和1c。此外，即使在1℃下300次循环后，也可以保持155mAhg（-1）的放电容量，对应于高达81％的容量保持。 （c）2018由elestvier b.v出版。

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