Sol–gel preparation and electrochemical characterization of SnO2/MWCNTs anode materials for Li-ion batteries
Sol–gel preparation and electrochemical characterization of SnO2/MWCNTs anode materials for Li-ion batteries
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DOI：
10.1016/j.apsusc.2013.01.055
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发表时间：
2013-06
影响因子：
6.7
通讯作者：
H. Köse;A. Aydın;H. Akbulut
中科院分区：
文献类型：
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作者：
H. Köse;A. Aydın;H. Akbulut
采用溶胶-凝胶法制备了SnO 2/MWCNT巴克纸复合薄膜作为锂离子电池负极材料。首先，制备了MWCNT巴基纸，并在去除氯离子后制备了SnO 2前驱体溶胶。随后，以多壁碳纳米管为基底，采用旋涂法制备了纳米复合电极。烧结的纳米复合材料结构，其特征在于与扫描电子显微镜（SEM），原子力显微镜（AFM），能量色散X射线光谱仪（EDS），和X射线衍射（XRD）分析。对组装为CR 2016电池的所生产的电极进行电化学测试。涂层上的多壁碳纳米管巴基纸防止裂纹的形成的溶胶-凝胶薄膜上的多壁碳纳米管表面。结果表明，在缓冲嵌锂/脱锂过程中的SnO 2的大体积变化方面的有益效果。结果表明，纳米SnO 2/MWCNT复合材料适合用作锂离子电池的负极，以提高其电化学储能性能。
Sol–gel technique was used to prepare SnO2/MWCNT buckypaper composite films as anode material for Li-ion batteries. Firstly, MWCNT buckypapers were prepared and SnO2precursor sols were synthesized after removing chloride ions. Subsequently, spin coating method was applied to form nanocomposite electrodes by using MWCNTs as substrates. Sintered nanocomposite structures were then characterized with scanning electron microscopy (SEM), atomic force microscopy (AFM), energy dispersive X-ray spectrometer (EDS), and X-ray diffraction (XRD) analyses. Electrochemical tests were performed for the produced electrodes assembled as CR2016 cells. Coating on the MWCNT buckypapers prevented the formation of cracks of the sol–gel thin film on the MWCNT surfaces. The results showed beneficial effects in terms of buffering the large-volume change of SnO2during the lithium insertion/extraction process. The results indicated that the nanocrystalline SnO2/MWCNT composites are suitable for applying as an anode electrode for Li-ion batteries to increase electrochemical energy storage performance.