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首页> 外文期刊>International Journal of Electrochemical Science >Biomass Carbon Materials Derived from Starch and their Electrochemical Properties
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Biomass Carbon Materials Derived from Starch and their Electrochemical Properties

机译：生物质碳材料衍生自淀粉及其电化学性质

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Porous carbon was prepared by using starch as a carbon source and ZnCl2 as an activator. The physical and chemical properties of porous carbon materials were characterized by scanning electron microscope (SEM), transmission electron microscope (TEM), X-ray diffraction (XRD), Raman spectroscopy, Nitrogen adsorption/desorption, and XPS. Nitrogen adsorption/desorption tests show that ZnCl2 has well pore expansion, with a maximum specific surface area of 1591.83 m2 /g and a total pore volume of 0.89 cm3 /g. Under the 1A/g current density, the specific capacitance is 249F/g. When the current density gains from 1A/g to 10 A/g, the capacitance retention reaches 72.29%. At the same time, it demonstrates high energy density (34.34 W·h/g) and power density (500W·K/g). The capacitance retention is 90.4% after 5000 cycles at 2 A/g current density. The results depict that the porous carbon is not only an ideal electrode material for supercapacitors but also a good carrier for the preparation of catalysts from mesoporous materials.
机译：通过使用淀粉作为碳源和ZnCl2作为活化剂来制备多孔碳。通过扫描电子显微镜（SEM），透射电子显微镜（TEM），X射线衍射（XRD），拉曼光谱，氮吸附/解吸和XPS来表征多孔碳材料的物理和化学性质。氮吸附/解吸试验表明，ZnCl2具有孔的孔隙膨胀，最大比表面积为1591.83m 2 / g，总孔体积为0.89cm 3 / g。在1A / g电流密度下，特定电容为249f / g。当电流密度从1A / g到10A / g时，电容保持达到72.29％。同时，它证明了高能量密度（34.34W·H / G）和功率密度（500W·K / G）。在5000次循环以2A / g电流密度下循环后电容保持是90.4％。结果描绘了多孔碳不仅是超级电容器的理想电极材料，而且是用于制备来自中孔材料的催化剂的好载体。

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