Synthesis of monodisperse single crystal Zn2SnO4 cubes with high lithium storage capacity
Synthesis of monodisperse single crystal Zn2SnO4 cubes with high lithium storage capacity
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高储锂容量单分散单晶Zn2SnO4立方体的合成
DOI：
10.1016/j.matlet.2012.02.071
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发表时间：
2012-06-01
影响因子：
3
通讯作者：
He, Deyan
中科院分区：
文献类型：
--
作者：
Feng, Na;Peng, Shanglong;He, Deyan
采用简单的水热法制备单分散单晶锌锡氧化物立方体，并用X射线粉末衍射仪、扫描电子显微镜和透射电子显微镜对其进行了表征。评价了它们作为锂离子电池负极材料的电化学性能。结果表明，所制备的样品晶相纯度高，结晶度好。材料的首次放电容量和充电容量分别为1437和921 mA·h·g(-1)。在50 mA g(-1)的电流密度下，循环20次后的可逆容量为775 mA h g(-1)。较高的可逆容量和良好的稳定性可能与材料特殊的微观结构特征有关。这种简单、廉价的方法合成的Zn2SnO4结构有望在储能方面具有潜在的应用前景。(C)2012爱思唯尔B.V.保留所有权利。
Monodisperse single crystal Zn2SnO4 cubes were synthesized via a facile hydrothermal method with low-cost reagents and characterized by X-ray powder diffraction, scanning electron microscopy and transmission electron microscopy. Their electrochemical performances were evaluated as anode materials of lithium ion batteries. It showed that the as-prepared sample is of high purity phase and in good crystallinity. The first discharge and charge capacities of the material are 1437 and 921 mA h g(-1). A higher reversible capacity of 775 mA h g(-1) was obtained after 20 cycles at a current density of 50 mA g(-1). The higher reversible capacity and good stability can be related to the special microstructural features of the material. Such Zn2SnO4 structures synthesized by the simple and cheap method are expected to have potential application in energy storage. (C) 2012 Elsevier B.V. All rights reserved.