Preparation and lithium storage performance of silicon and carbon microrods by chemical vapor co-deposition


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Silicon/carbon microrods are co-deposited on copper substrate and graphite spheres surface using dimethyl dichlorosilance as carbon and silicon precursor. The obtained composites are characterized by X-ray diffraction and scanning electron microscopy. The experimental results show that silicon/carbon microrods deposited on the copper substrate, whose diameter is about 500 nm, are accumulated into sisallike morphology, those deposited on the graphite spheres surface form hedgehog-like feature, whose diameter is about 200 nm and whose top is like cauliflower. When current density of 50 mA/g is applied, charge capacity of silicon/carbon microrods is 1492 mA h/g (deposited on copper substrate) and 693 mA h/g (deposited on the graphite spheres surface). Moreover, silicon/carbon microrods deposited on the graphite spehres and copper substrate respectively deliver the capacity of 592, 985 mA h/g, and display no capacity decay at all after the 20 cycles, when cycled under current density of 500 mA/g.

Sobre autores

Youliang Zhang

School of Metallurgical Engineering

Email: lzdxnchh@126.com
República Popular da China, Zhuzhu Hunan, 412007

Han Chen

School of Metallurgical Engineering

Autor responsável pela correspondência
Email: lzdxnchh@126.com
República Popular da China, Zhuzhu Hunan, 412007

Ningbo Bai

School of Metallurgical Engineering

Email: lzdxnchh@126.com
República Popular da China, Zhuzhu Hunan, 412007

Kaixiong Xiang

School of Metallurgical Engineering

Email: lzdxnchh@126.com
República Popular da China, Zhuzhu Hunan, 412007

Wei Zhou

School of Metallurgical Engineering

Email: lzdxnchh@126.com
República Popular da China, Zhuzhu Hunan, 412007

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