Synthesis of Hollow Nanorods of SiO<SUB>2</SUB> Anode Material by AAO Template Synthesis Method for Lithium Ion Battery

Abstract

Silicon oxide hollow nanorods (SiO2-HNs) were prepared via a two-step anodization of aluminum template. SiO2 was synthesized using tetraethyl orthosilicate (TEOS) as the Si source that has not been applied to the anodic aluminum oxide (AAO) template method. The SiO2-HNs obtained were characterized by X-ray diffraction, scanning electron microscopy and electrochemical test. The results show that SiO2 nanorods with hollow morphology were successfully formed by the AAO template. The SiO2-HNs were investigated as an anode material for lithium-ion batteries and delivered an initial reversible capacity of 1344.26 mA h g(-1) at a current density of 17 mAg(-1). To the best of our knowledge, this is the first report of the synthesis of SiO2-HN using TEOS as the Si source by a two-step anodization of AAO template.

The Use of Anodic Oxides in Practical and Sustainable Devices for Energy Conversion and Storage

“…The use of AAO as a template to drive the synthesis of the other materials was also reported in LIBs [153][154][155], SIBs [156], and Li-S batteries [157]. Yoo et al [153] [157] utilized commercial AAO as a template to prepare a carbon composite material with sulfur for a Li-S battery application. In this case, the carbon nanotubes were deposited on the pore-walls of the AAO template by chemical vapor deposition (CVD) from a mixture of C 2 H 2 and N 2 .…”

“…Otherwise, as discussed in [158,159], if the nanoscale electrode materials match with the wavelength of electrons, phonons, and other material constituents, quantum effects might occur, improving the electrical conductivity. Some examples of these approaches may be found in [153,154,156,[160][161][162][163][164][165][166][167][168]. Although the above articles point to exciting strategies for improving battery conductivity, these technologies are still in fundamental science and will not be discussed in depth in this applied material review.…”