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首页> 外文期刊>International Journal of Electrochemical Science >Preparation of ZnO Porous Nanostructures and Its Application in Cathode Material for Lithium Sulfur Battery
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Preparation of ZnO Porous Nanostructures and Its Application in Cathode Material for Lithium Sulfur Battery

机译：ZnO多孔纳米结构的制备及其在锂硫电池正极材料中的应用

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摘要

ZnO porous nanostructures were prepared by a two-step method which is composed of hydrothermalprocess and heating treatment. S/ZnO composite materials were prepared by heat treatment a mixtureof sulfur and ZnO porous nanostructures at 155 The crystal structure and morphology of theprepared samples were showed by X-ray diffractometry (XRD) and scanning electron microscope(SEM). The electrochemical properties of S/ZnO composites were studied by means of cyclicvoltammetry (CV), electrochemical impedance spectroscopy (EIS) and the charge and discharge test.The electrochemical study shows that the S/ZnO cathode presents an initial discharge capacity of 1414mAhg-1 and retains 662 mAhg-1 with a Columbic efficiency 97% after 100 discharge/charge cyclesat the current density of 335 mAg-1 between 1.0 and 2.8V.
机译：ZnO多孔纳米结构是通过水热处理和热处理两步法制备的。在155℃对硫和ZnO多孔纳米结构的混合物进行热处理，制备出S / ZnO复合材料。用X射线衍射（XRD）和扫描电子显微镜（SEM）表征了制备样品的晶体结构和形貌。通过循环伏安法（CV），电化学阻抗谱（EIS）和充放电试验研究了S / ZnO复合材料的电化学性能。电化学研究表明，S / ZnO阴极的初始放电容量为1414mAhg-1。在100 mA放电/充电周期后，在335 mAg-1的电流密度介于1.0和2.8V之间时，保留662 mAhg-1的电量，哥伦布效率为97％。

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