Wet chemical route to the synthesis of kesterite Cu2ZnSnS4 nanocrystals and their applications in lithium ion batteries
Wet chemical route to the synthesis of kesterite Cu2ZnSnS4 nanocrystals and their applications in lithium ion batteries
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湿化学法合成锌黄锡矿Cu2ZnSnS4纳米晶及其在锂离子电池中的应用
DOI：
10.1016/j.matlet.2012.10.125
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发表时间：
2013-02-01
影响因子：
3
通讯作者：
Huang, Sumei
中科院分区：
文献类型：
--
作者：
Li, Junjie;Shen, Jie;Huang, Sumei
采用一种廉价、快速的湿化学方法成功地合成了锡基四元材料Cu 2 ZnSnS 4（CZTS）。采用X射线衍射（XRD）、拉曼光谱、透射电子显微镜（TEM）和选区电子衍射（SAED）等技术对所制备的CZTS纳米晶进行了表征。XRD和SAED结果表明生成了锌黄锡矿CZTS。所形成的CZTS纳米晶体是直径在5 nm和25 nm之间的略微不规则的多面颗粒。首次将CZTS作为锂离子二次电池负极材料进行了研究。在500 ℃退火的Cu 2 ZnSnS 4在初始阶段表现出约540 mA h g（-1）的容量。CZTS电极的第一次循环表现出极大的不可逆容量。结果表明，从Cu 2 ZnSnS 4粉末中形成金属Sn类似于SnO 2或SnS 2电极的情况。Cu_2ZnSnS_4是未来锂离子电池负极材料的候选材料之一。(C)2012爱思唯尔有限公司版权所有。
Sn-based quaternary material, Cu2ZnSnS4 (CZTS), was successfully synthesized using an inexpensive and quick wet chemical route. The obtained CZTS nanocrystals were characterized by X-ray diffraction (XRD), Raman spectroscopy, transmission electron microscopy (TEM) and selected area electron diffraction (SAED) techniques. XRD and SAED results revealed that kesterite CZTS was formed. The formed CZTS nanocrystals were slightly irregularly faceted particles with diameters between 5 nm and 25 nm. CZTS was studied as an anode material in rechargeable lithium ion battery for the first time. The Cu2ZnSnS4 annealed at 500 degrees C showed a capacity of about 540 mA h g(-1) at the initial stage. The first cycle of the CZTS electrode exhibited enormously irreversible capacity. The result indicated that the formation of metallic Sn from the Cu2ZnSnS4 powder was similar to the case in SnO2 or SnS2 electrodes. Cu2ZnSnS4 was demonstrated to be one of the possible candidates of the anode materials for future lithium ion battery. (C) 2012 Elsevier B.V. All rights reserved.