Preparation of SnO2/Carbon Composite Hollow Spheres and Their Lithium Storage Properties
Preparation of SnO2/Carbon Composite Hollow Spheres and Their Lithium Storage Properties
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DOI：
10.1021/cm801607e
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发表时间：
2008-10-28
影响因子：
8.6
通讯作者：
Archer, Lynden A.
中科院分区：
文献类型：
--
作者：
Lou, Xiong Wen (David);Deng, Da;Archer, Lynden A.
在这项工作中，我们提出了一个新的概念，结构设计制备功能复合空心球和衍生的双壳空心球。该方法包括两个主要步骤：制备一种组分的多孔空心球和将另一种组分沉积到壳的内表面和外表面以及孔中。我们通过制备SnO 2/碳复合空心球来证明这一概念，并评估它们作为锂离子电池潜在的阳极材料。这些SnO 2/碳空心球能够在50次循环后提供473 mA h g（-1）的可逆Li存储容量。通过选择性地去除夹层多孔SnO 2壳层，得到了不寻常的双壳碳空心球。
In this work, we present a novel concept of structural design for preparing functional composite hollow spheres and derived double-shelled hollow spheres. The approach involves two main steps: preparation of porous hollow spheres of one component and deposition of the other component onto both the interior and exterior surfaces of the shell as well as in the pores. We demonstrate the concept by preparing SnO2/carbon composite hollow spheres and evaluate them as potential anode materials for lithium-ion batteries. These SnO2/carbon hollow spheres are able to deliver a reversible Li storage capacity of 473 mA h g(-1) after 50 cycles. Unusual double-shelled carbon hollow spheres are obtained by selective removal of the sandwiched porous SnO2 shells.