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XRD of samples was performed on a diffractometer (D/Max-2400) with Cu Kα radiation (=1.5418 Å at 40 kV, 60 mA. Morphology of the ZnO-graphene composites was investigated with FESEM (JSM-6701F, Japan). TEM image was taken with a transmission electron microscope (JEOL, JEM-2010, Japan) operating at 200 kV. The N2 adsorption–desorption isotherms of the samples were measured at 77 K using Quantachrome Instruments (version 2.02) in order to determine the specific surface areas. The components omaterials were measured by a Nicolet Nexus 670 FT-IR instrument. Thermal analysis was carried out using a Perkin-Elmer TG/DTG–6300 instrument in a temperature range of 30–750 ℃. A heating rate of 10 ℃ min–1 in air with a flow rate of 20 mL min-1 was used. A typical three-electrode test cell in 0.1M Na2SO4 electrolyte at room temperature was used for cyclic voltammograms (CV), galvanostatic charge–discharge tests and electrochemical impedance spectroscopy (EIS), using a CHI660B (CH Instrument) electrochemical working station. The prepared electrode was used as the working electrode. A platinum foil served as the counter electrode and standard calomel electrode (SCE) as the reference electrode. |
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lofed: 金币+10, 翻译EPI+1, ★★★★★最佳答案, 真是神速，小弟不甚感激！ 2014-01-12 01:53:48
lofed: 金币+10, 翻译EPI+1, ★★★★★最佳答案, 真是神速，小弟不甚感激！ 2014-01-12 01:53:48
| 样品X射线衍射的衍射仪（ D/Max-2400 ）采用Cu Kα辐射（1.5418唉，40千伏，60毫安）。ZnO -石墨烯复合材料的形态学用场发射扫描电子显微镜（ JSM- 6701F ，日本）进行研究。 透射电镜图像是用透射电子显微镜（ JEOL ， JEM -2010 ，日本）在200千伏进行。样品的N2吸附 - 脱附等温线用美国康塔仪器公司（2.02 版本）在77 K测定 ，以确定具体的表面积。物质成分用Nicolet Nexus 670 傅里叶变换红外光谱仪测定。热分析使用在Perkin-Elmer TG/DTG-6300仪器，温度范围30-750 ℃。以10℃每 min的升温速率，空气流速20毫升每分钟。0.1M硫酸钠室温电解质的典型三电极测试电池用于循环伏安（CV）图绘制 ，恒电流充放电试验和电化学阻抗谱（EIS）测定 ，采用的工作站为CHI660B （CH仪器）电化学工作站。制备电极作为工作电极，一个铂箔充当对电极和标准甘汞电极（SCE）作为参比电极。 |
2楼2014-01-12 01:43:30
