Hollow Nanostructured Metal Silicates with Tunable Properties for Lithium Ion Battery Anodes

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• 作者：Seung-Ho Yu ; Bo Quan ; Aihua Jin ; Kug-Seung Lee ; Soon Hyung Kang ; Kisuk Kang ; Yuanzhe Piao ; Yung-Eun Sung
• 刊名：ACS Applied Materials & Interfaces
• 出版年：2015
• 出版时间：November 25, 2015
• 年：2015
• 卷：7
• 期：46
• 页码：25725-25732
• 全文大小：550K
• ISSN：1944-8252

文摘

Hollow nanostructured materials have attracted considerable interest as lithium ion battery electrodes because of their good electrochemical properties. In this study, we developed a general procedure for the synthesis of hollow nanostructured metal silicates via a hydrothermal process using silica nanoparticles as templates. The morphology and composition of hollow nanostructured metal silicates could be controlled by changing the metal precursor. The as-prepared hierarchical hollow nanostructures with diameters of 鈭?00鈥?00 nm were composed of variously shaped primary particles such as hollow nanospheres, solid nanoparticles, and thin nanosheets. Furthermore, different primary nanoparticles could be combined to form hybrid hierarchical hollow nanostructures. When hollow nanostructured metal silicates were applied as anode materials for lithium ion batteries, all samples exhibited good cyclic stability during 300 cycles, as well as tunable electrochemical properties.