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首页> 外文期刊>Ionics >Structural and electrochemical investigation of new integrated layered-layered-spinel composite, Li1.1Mn0.97Ni0.265Cr0.1Co0.065O3, as cathode material for high performance lithium ion battery
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Structural and electrochemical investigation of new integrated layered-layered-spinel composite, Li1.1Mn0.97Ni0.265Cr0.1Co0.065O3, as cathode material for high performance lithium ion battery

机译:新型层叠层尖晶石复合材料的结构和电化学研究,Li1.1Mn0.97Ni0.265Cr0.1Co0.065O3,作为高性能锂离子电池的阴极材料

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摘要

A series of xLiMn(1.4)Ni(0.4)Cr(0.2)O(4). (1-x) Li1.2Mn0.54Ni0.13Co0.13O2, where x=0, 0.25, 0.5, 0.75, and 1, were synthesized by solid-state method. The cathode composites included x values of 0.25, 0.5, and 0.75 showed both spinel and layered structures. When the amount of spinel component increased in the cathode composite, specific capacity decreased while rate performance and cyclic stability enhanced. Among the prepared composites, 0.5LiMn(1.4)Ni(0.4)Cr(0.2)O(4). 0.5Li(1.2)Mn(0.54)Ni(0.13)Co(0.13)O(2) (LL '' S-0.5) delivered a good combination of high capacity, excellent rate performance, and high cycle stability, even after 300cycles. It represented discharge capacities of 251mAhg(-1) at 0.1C and 152mAhg(-1) even at 10C. Furthermore, it showed high capacity retention of 94.4% after 300cycles at 0.1C. Additionally, ex situ X-ray diffraction results demonstrated that the both layered and spinel structures remained stable during the cycling of this cathode composite. This study represented a novel integrated layered-layered-spinel cathode composite including chromium ions with high cycling performance as well as excellent rate performance can be used in advanced lithium ion batteries.
机译:一系列Xlimn(1.4)Ni(0.4)Cr(0.2)O(4)。 (1-x)Li1.2mn0.54Ni0.13Co0.13O2,其中X = 0,0.25,0.5,0.75和1由固态方法合成。阴极复合材料包括0.25,0.5和0.75的X值显示出尖晶石和层叠结构。当尖晶石组分在阴极复合材料中增加时,比率降低,而速率性能和循环稳定性增强。在制备的复合材料中,0.5磅(1.4)Ni(0.4)Cr(0.2)O(4)。 0.5LI(1.2)Mn(0.54)Ni(0.13)CO(0.13)O(2)(LL'S-0.5)均匀的高容量,优异的性能和高循环稳定性的良好组合,即使在300循环之后也是如此。它即使在10℃下也表示在0.1℃和152mAhg(-1)下的251mAhg(-1)的放电容量。此外,在0.1℃下300℃后,它显示出94.4%的高容量保持。另外,Ex原位X射线衍射结果表明,在该阴极复合物的循环期间,层状和尖晶石结构保持稳定。该研究代表了一种新型集成的层状层状尖晶石阴极复合材料,包括具有高循环性能的铬离子以及优异的锂离子电池可用于优异的速率性能。

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