Abstract

Layered nanosheets of a LiV₃O₈ cathode material were successfully prepared via a modified solid-state synthesis. The morphological changes of the layered nanosheets of the LiV₃O₈ cathode, which resulted from preparation at different temperatures, strongly affected the electrochemical performance of this cathode material. The layered nanosheets of the LiV₃O₈ cathode prepared at 500 °C delivered the highest electrochemical performance with initial charge and discharge capacities of 212 and 175 mAh g⁻¹, respectively, when cycled between 1.5 and 4.0 V versus Li/Li⁺. The particulate morphology of LiV₃O₈ showed widths in a range of 100-145 nm and lengths between 1.0 and 2.5 µm. The layered nanosheet structure contributed to the increased electrochemical performance of LiV₃O₈ as a cathode material for applications in high-energy lithium-ion batteries.

中文翻译：

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层状LiV 3 O 8纳米片的简便合成及其作为锂离子电池正极材料的电化学性能

摘要

通过改进的固态合成成功地制备了LiV ₃ O ₈阴极材料的层状纳米片。LiV ₃ O ₈阴极的层状纳米片的形态变化是由于在不同温度下制备而引起的，极大地影响了该阴极材料的电化学性能。相对于Li / Li ⁺在1.5和4.0 V之间循环时，在500°C下制备的LiV ₃ O ₈阴极的层状纳米片提供了最高的电化学性能，初始充放电容量分别为212和175 mAh g ^-1。LiV ₃ O的颗粒形态_图8示出了在100-145nm范围内的宽度和在1.0至2.5μm之间的长度。层状纳米片结构有助于提高LiV ₃ O ₈作为高能锂离子电池中阴极材料的电化学性能。