| Investigation of the electrochemical performance of ZIF 67/ carbon-nanotube and Graphene oxide nanocomposites for supercapacitor application |
| کد مقاله : 1072-CNF (R2) |
| نویسندگان |
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قاسم اسکوئیان *1، عباس عبدالملکی1، سعید تقوی1، محمد نبی دهدشتی1، فریده باتقوا2، حمید حیدری1 1مجتمع شیمی و مهندسی شیمی 2دانشکده شیمی |
| چکیده مقاله |
| Recently, hybrid supercapacitor due to high energy/power density and long cycle life has been attractive field for energy researchers. In this work, nanocomposites composed of zeolitic imidazole framework (ZIF) and carbon nanotube (CNT) have been made by a simple ultrasonic method in atmospheric condition. Electrochemical techniques like cyclic voltammetry, galvanostatic charge/discharge and electrochemical impedance spectroscopy with 6 M NaOH electrolyte are used for measuring electrochemical properties of prepared electrode. For more comparison, the electrochemical performances of ZIF-67/CNT were compared with nanocomposites composed of ZIF and graphene oxide (GO). The ZIF-67/CNT nanocomposite electrode show high specific capacity of 248 F/g, which is higher than ZIF-67/GO (230 F/g) and much higher than that of ZIF-67(120 F/g). In addition to pseudocapacitance behavior, the internal resistances of nanocomposite samples are less than pure ZIF-67 which shows the beneficial effect of added carbon materials. Value of specific capacity remained at 96% and 94.5% after 1000 cycles under the current density of 1A/g for ZIF-67/CNT and ZIF-67/GO respectively. |
| کلیدواژه ها |
| Pseudocapacitance, Zeolitic imidazole framework, Carbon nanotube, Graphene oxide, Metal-organic framework |
| وضعیت: چکیده برای ارائه به صورت پوستر پذیرفته شده است |