Hosseini, Seied Ali, Karami, Zeynodin, Olamaee, Ali, Saghafi Yazdi, Morteza, Abedini, Mohammad, Moghanian, Amirhossein. (1401). Enhanced capacity and electrochemical performance of zinc cobalt selenide by using a novel two-stage synthesis method. , 55(2), 161-171. doi: 10.22059/jufgnsm.2022.02.08
Seied Ali Hosseini; Zeynodin Karami; Ali Olamaee; Morteza Saghafi Yazdi; Mohammad Abedini; Amirhossein Moghanian. "Enhanced capacity and electrochemical performance of zinc cobalt selenide by using a novel two-stage synthesis method". , 55, 2, 1401, 161-171. doi: 10.22059/jufgnsm.2022.02.08
Hosseini, Seied Ali, Karami, Zeynodin, Olamaee, Ali, Saghafi Yazdi, Morteza, Abedini, Mohammad, Moghanian, Amirhossein. (1401). 'Enhanced capacity and electrochemical performance of zinc cobalt selenide by using a novel two-stage synthesis method', , 55(2), pp. 161-171. doi: 10.22059/jufgnsm.2022.02.08
Hosseini, Seied Ali, Karami, Zeynodin, Olamaee, Ali, Saghafi Yazdi, Morteza, Abedini, Mohammad, Moghanian, Amirhossein. Enhanced capacity and electrochemical performance of zinc cobalt selenide by using a novel two-stage synthesis method. , 1401; 55(2): 161-171. doi: 10.22059/jufgnsm.2022.02.08

Enhanced capacity and electrochemical performance of zinc cobalt selenide by using a novel two-stage synthesis method

Journal of Ultrafine Grained and Nanostructured Materials
مقاله 8، دوره 55، شماره 2، اسفند 2022، صفحه 161-171    اصل مقاله (2.32 M)
نوع مقاله: Research Paper
شناسه دیجیتال (DOI): 10.22059/jufgnsm.2022.02.08
نویسندگان
Seied Ali Hosseini* 1؛ Zeynodin Karami2؛ Ali Olamaee2؛ Morteza Saghafi Yazdi2؛ Mohammad Abedini2؛ Amirhossein Moghanian2
1Department of Electrical Engineering, Faculty of Engineering, Imam Khomeini International University, Qazvin, Iran.
2Department of Materials Science and Engineering, Faculty of Engineering, Imam Khomeini International University, Qazvin, Iran.
چکیده
In this paper, a novel method of synthesis of zinc cobalt selenide (ZnCoSe) nanostructures via the hydrothermal method is introduced that is comprised of two stages as opposed to the direct method that could be done in a single stage. In the single-stage method, the consequent electrodes were covered by ZnCoSe that was directly and immediately synthesized while in the two-stage method, first, zinc cobalt oxide (ZnCoO) was hydrothermally produced then the oxygen atoms were replaced by selenium and the ZnCoSe* electrode was indirectly obtained. The structural and electrochemical evaluations showed boosted performance of the ZnCoSe* whose structure was found to be nanowire. In this paper, the specific capacitance values (Csp) of the ZnCoSe* , ZnCoO and ZnCoSe electrodes were measured to be 104, 64 and 62 F.g-1 at 20 mV/s scan-rate by Cyclic voltammetry (CV) which alongside the Galvanostatic Charge-Discharge (GCD) analysis, led us to conclude superior activity of the ZnCoSe* electrode. Electrochemical impedance spectroscopy (EIS) was also performed and its results were in accordance with those of the cyclic voltammetry. Based on the EIS results, ZnCoSe* showed the smallest charge transfer resistance (6.5 ohm/cm-2)  and consequently the supreme electrochemical behavior among the studied electrodes. Moreover, a better capacity retention value was recorded in the cyclability test of the ZnCoSe* electrode as the specific capacity value of this electrode reached 145% of its initial value after 2000 cycles.
کلیدواژه‌ها
capacitance؛ electrode؛ zinc؛ selenide؛ cobalt؛ hydrothermal
مراجع
آمار
تعداد مشاهده مقاله: 1,033
تعداد دریافت فایل اصل مقاله: 858