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Templated magnesiothermic synthesis of silicon nanotube bundles and their electrochemical performances in lithium ion batteries

机译:硅纳米管束的模板磁热合成及其在锂离子电池中的电化学性能

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摘要

Silicon nanotube bundles (Si NBs) have been synthesized on a large scale via a templated magnesiothermic method. Hydroxyapatite (HAP) nanobelt bundles were fabricated and used as a sacrificial template to form silica nanotube bundles (SiO2 NBs) followed by transformation of SiO2 NBs into Si NBs through magnesiothermic reduction. The structure and morphology of the as-prepared Si NBs were examined in detail by XRD, Raman spectroscopy, SEM and TEM. The electrochemical application of Si NBs as an anode in lithium ion batteries (LIBs) has been investigated, which shows a reversible capacity with little fading, outweighing the performance using Si nanoparticles.
机译:硅纳米管束(Si NBs)已通过模板磁热法大规模合成。制备了羟基磷灰石(HAP)纳米带束,并将其用作牺牲模板以形成二氧化硅纳米管束(SiO2 NBs),然后通过镁热还原将SiO2 NBs转变为Si NBs。通过XRD,拉曼光谱,SEM和TEM详细检查了制备的Si NB的结构和形态。已经研究了Si NBs在锂离子电池(LIBs)中作为阳极的电化学应用,它显示出可逆容量,几乎不褪色,超过了使用Si纳米粒子的性能。

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