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Ultrafine beta-AgVO3 nanoribbons derived from alpha-AgVO3 nanorods by water evaporation method and its application for lithium ion batteries

机译:水蒸发法衍生自α-AgVO3纳米棒的超细β-AgVO3纳米带及其在锂离子电池中的应用

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摘要

Monoclinic beta-AgVO3 nanoribbons with thickness of 10-20 nm, width of 80-100 nm and length of several hundred micrometers have been successfully prepared by a water evaporation method at 100 degrees C for 6 h without using any template and organic surfactant. A possible evolution mechanism from alpha-AgVO3 nanorods to beta-AgVO3 nanoribbons is proposed. The AgVO3 nanostructures are demonstrated as promising cathode materials in lithium ion batteries. The as-prepared beta-AgVO3 nanoribbons show improved electrochemical performance in comparison with alpha-AgVO3 nanorods due to the ultrafine morphology and thermodynamic stable crystal structure yielding a discharge capacity of 355 mA h g(-1) at a current density of 30 mA g(-1). It can still remain 32% of its initial discharge capacity after 20 cycles.
机译:在不使用任何模板和有机表面活性剂的情况下,通过水蒸发方法在100摄氏度下成功制备了厚度为10-20 nm,宽度为80-100 nm,长度为几百微米的单斜晶β-AgVO3纳米带。提出了从α-AgVO3纳米棒到β-AgVO3纳米带的可能演化机理。 AgVO3纳米结构被证明是锂离子电池中很有希望的正极材料。制备的β-AgVO3纳米带与α-AgVO3纳米棒相比显示出更高的电化学性能,这是由于其超细的形态和热力学稳定的晶体结构在电流密度为30 mA g()时可产生355 mA hg(-1)的放电容量。 -1)。 20个循环后,它仍可以保持其初始放电容量的32%。

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