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首页> 外文期刊>RSC Advances >Enteromorpha based porous carbons activated by zinc chloride for supercapacitors with high capacity retention
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Enteromorpha based porous carbons activated by zinc chloride for supercapacitors with high capacity retention

机译：氯化锌活化的肠morph基多孔碳，用于具有高容量保持能力的超级电容器

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摘要

Porous carbons were prepared from enteromorpha overrunning in China Sea with ZnCl2 as an active agent. The obtained porous carbons were used as electrode materials to make supercapacitors. In order to make enteromorpha based supercapacitors with high performance, the effects of preparation parameters, including impregnation weight ratio of ZnCl2 to enteromorpha, activation time and temperature on pore structure and electrochemical performances of enteromorpha based porous carbons (EBPCs) were investigated. The specific area and porous structure were characterized by nitrogen adsorption. Galvanostatic charge-discharge and cyclic voltammetry analysis were used to investigate the electrochemical properties of EBPCs. The results show that activation temperature of 700 degrees C, the impregnation weight ratio of 2/1 and activation time of 1.5 h are the optimal preparation parameters. The prepared EBPC with a specific surface area of 1651 m(2) g(-1) exhibited a specific capacitance of 206 F g(-1) and capacity retention of 93% even after 5000 cycles, showing excellent electrochemical properties of EBPC and good future utilization of enteromorpha.
机译：以ZnCl2为活性剂，从在中国海域上空越过的小肠中制备了多孔碳。将获得的多孔碳用作电极材料以制造超级电容器。为了使基于肠morph形体的超级电容器具有高性能，研究了制备参数的影响，包括ZnCl2与肠morph形体的浸渍重量比，活化时间和温度对基于肠morph形体的多孔碳（EBPC）的孔结构和电化学性能的影响。比表面积和多孔结构通过氮吸附来表征。恒电流充放电和循环伏安法用于研究EBPC的电化学性能。结果表明，活化温度为700℃，浸渍重量比为2/1，活化时间为1.5h为最佳制备参数。制备的比表面积为1651 m（2）g（-1）的EBPC表现出206 F g（-1）的比电容，甚至在5000次循环后仍显示93％的容量保持率，显示出EBPC优异的电化学性能和良好的morph的未来利用。

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